Science and Curiosity

Given: The narrator discovers a canary (Claribel) on the space station.

Answer: The narrator thought Sven had secretly brought a bird aboard because keeping pets on a space station was not officially permitted. Sven, however, gave a scientific reason: he said he was conducting an experiment on the behaviour of birds in zero gravity and in the conditions of space. He justified Claribel's presence as a subject of scientific observation, making it sound like an unofficial but purposeful experiment.

Given: Claribel is a canary placed in the zero-gravity environment of a space station.

Answer: At first, Claribel was confused and disoriented by the absence of gravity. She could not fly in the normal way she was used to on Earth. However, she gradually adapted to the new surroundings. She learned to use the air currents inside the space station and began performing loops and graceful aerial manoeuvres that would have been impossible on Earth. In time, she seemed to enjoy her new environment and became a cheerful presence on the station.

Given: The narrator hears an unexpected musical sound on the space station.

Answer: The narrator mistook Claribel's musical whistle for a sound from the intercom because it was completely unexpected to hear birdsong in a space station. The intercom was the usual source of sounds and voices on the station, so when the narrator heard an unusual, melodious sound, the natural assumption was that it was coming from the intercom system. The idea of a live bird being present on the station had not occurred to the narrator at that point.

Given: Claribel is an unauthorised bird on the space station.

Answer: Initially, the presence of the canary could have led the spacers into trouble because bringing an unofficial pet aboard a space station without permission would be against regulations. The authorities might have penalised Sven for this. However, in the end, the canary's presence actually saved the lives of the entire crew by alerting them to the failure of the air purifier. Therefore, rather than causing trouble, Claribel proved to be an invaluable, life-saving presence. It is likely that after this incident, the authorities would have overlooked or even appreciated Sven's decision.

False. The alarm failed because the second alarm circuit had not been connected up yet, and the single alarm in the circuit also failed to go off during the rare eclipse that caused part of the air purifier to freeze. So it was a combination of an incomplete circuit and a malfunction, not simply because the alarms were not connected.

False. Claribel was brought aboard unofficially by Sven. He gave a scientific reason (an experiment on animal behaviour in space) to justify her presence, but it was not an officially sanctioned experiment.

True. When Claribel fainted due to the lack of oxygen caused by the malfunctioning air purifier, the narrator recalled that miners used to carry canaries to detect dangerous gases. This prompted the crew to check the air supply and discover the fault in the air purifier.

True. The text states that there was one of their rare eclipses by Earth's shadow that night, and part of the air purifier had frozen up as a result of this eclipse.

True. After adjusting to the zero-gravity environment, Claribel learned to perform loops and graceful aerial movements inside the space station.

False. The crew became quite fond of Claribel after she was discovered. She became a cheerful and beloved presence on the station, and the crew paid attention to her.

True. Claribel had passed out (fainted) due to the lack of oxygen when the air purifier malfunctioned. The crew passed around an oxygen bottle to revive her and themselves.

Correct Option: B. He possesses a strong understanding of working in space.

Justification: The extract describes Sven as one of the best construction men who excels at collecting floating girders, manoeuvring them in three-dimensional space, and fusing them precisely. This demonstrates a deep understanding of working in the unique conditions of space, including zero gravity.

We can conclude that Sven was working in zero gravity from the phrase 'as they floated around in free fall.' In zero gravity (free fall), objects do not fall downward but float freely in all directions. The description of girders floating around and the need to perform a 'slow-motion, three-dimensional ballet' to position them confirms that there was no gravitational pull acting on the objects, which is characteristic of zero gravity in space.

Correct Option: A. Both (A) and (R) are true, and (R) is the correct explanation of (A).

Justification: The Assertion is true — Sven did have to manoeuvre girders in a three-dimensional ballet. The Reason is also true — in zero gravity, objects float freely in all directions, which makes positioning them precisely far more challenging than on Earth. The Reason directly explains why such careful, ballet-like manoeuvring was necessary.

The underlined word is 'outfits.' From the extract, the word similar in meaning to 'outfits' is 'garbs.'

Replaced sentence: During the festival, people wore colourful garbs that represented their culture.

The narrator references canaries and miners in order to highlight the historical use of canaries as warning systems.

Explanation: The narrator recalls that miners used to carry canaries underground to detect the presence of dangerous gases. By making this reference, the narrator is drawing a parallel to explain why Claribel's fainting is a warning signal about the air quality on the space station.

Jim initially dismisses the warning about the air because he believes the alarm systems on the space station are reliable and would have gone off if there was any problem with the air, as they have duplicate circuits operating independently.

Correct Option: B. startled by unexpected information.

Justification: When Jim's assistant reminded him that the second alarm circuit had not been connected yet, Jim was taken aback and left without a word. The phrase 'shook Jim' means he was startled or disturbed by this unexpected piece of information that undermined his confident dismissal of the warning.

The phrase 'like a pipe of peace' is a simile that compares the oxygen bottle to a peace pipe — a symbol of calm, unity, and reconciliation. This suggests that the crew, despite the seriousness of the situation (a life-threatening failure of the air purifier), responded with a sense of calm and collective solidarity. They were working together, sharing the oxygen, and the tension of the argument was replaced by a quiet, cooperative effort to deal with the emergency. The humorous comparison also reflects the author's light-hearted tone even in a dangerous situation.

Purpose of the Alarm: The alarm system on the space station was designed to detect any problems with the air purifier and alert the crew if the oxygen supply was compromised. It was a safety mechanism to warn the crew of dangerous changes in the air quality.

Cause of Failure: The alarm failed due to a combination of unfortunate circumstances. There was a rare eclipse by Earth's shadow that night, which caused part of the air purifier to freeze up. Additionally, the second alarm circuit had not yet been connected, so only a single alarm was operational. This single alarm also failed to go off. As a result, the entire safety system — described as 'half a million dollars' worth of chemical and electronic engineering' — let the crew down completely.

At the beginning of the story, the crew's reaction to Claribel is one of surprise and mild disapproval. When the narrator discovers the canary, there is a sense that Sven has broken the rules by smuggling a bird aboard the space station. The crew is amused but also aware that this is an unofficial and potentially problematic presence.

As the story progresses, the crew warms up to Claribel. They enjoy her singing and her graceful aerial performances in zero gravity. She becomes a source of joy and entertainment on the station.

By the end of the story, the crew's attitude changes to one of deep gratitude and admiration. When Claribel faints due to the failing air purifier and her condition alerts the crew to the danger, she effectively saves all their lives. The crew realises that Claribel, an unofficial and seemingly trivial addition to the station, turned out to be the most important safety device on board. Their reaction shifts from amusement to genuine appreciation and respect.

The last part of the story powerfully illustrates that unconventional and unexpected solutions can sometimes be the most effective. The space station was equipped with sophisticated, expensive alarm systems worth half a million dollars, yet all of it failed when it was needed most. It was Claribel, a small canary brought aboard unofficially, who saved the crew's lives by acting as a natural detector of poor air quality — just as miners had used canaries for centuries.

This teaches us that:
1. Traditional wisdom and simple, time-tested methods should not be dismissed in favour of technology alone.
2. Unusual or unconventional approaches to problem-solving can be more reliable than complex, expensive systems.
3. Curiosity and open-mindedness — the very qualities that led Sven to bring Claribel aboard — can lead to life-saving discoveries.

The story suggests that science and curiosity, even in their simplest forms, can provide solutions that advanced technology cannot always guarantee.

The title 'Science and Curiosity' is highly appropriate for this story for the following reasons:

1. Scientific Setting: The story is set in a space station, a product of advanced science and technology. The characters are scientists and engineers working in space, which is itself a domain of scientific exploration.

2. Curiosity as a Driving Force: Sven's curiosity about animal behaviour in zero gravity leads him to bring Claribel aboard. This act of curiosity, though unofficial, turns out to be the most important decision made on the station.

3. Application of Old Scientific Knowledge: The narrator's recollection of miners using canaries to detect gas is an example of applying existing scientific knowledge in a new context. This connection between old wisdom and a new problem is a hallmark of scientific thinking.

4. The Unexpected Discovery: The story shows how curiosity and observation — core values of science — lead to the discovery of a life-threatening problem. Claribel's unusual behaviour (fainting) prompts the crew to investigate, which is the scientific method in action.

Thus, the title perfectly captures the essence of the story: science and curiosity together save lives.

This line, delivered with a touch of dark humour (the understatement 'slightly dead'), powerfully highlights the extreme vulnerability and uncertainty of life in space.

1. Fragility of Life in Space: In space, humans are entirely dependent on artificial systems for survival — air, temperature, and pressure are all maintained by machines. When these systems fail, even briefly, the consequences can be fatal.

2. Unpredictability: Despite the most advanced technology and careful planning, unexpected events (like a rare eclipse causing the air purifier to freeze) can create life-threatening situations without warning.

3. Dependence on Backup Systems: The line underscores how important it is to have multiple layers of safety. When the primary and secondary alarm systems both failed, it was only Claribel — an unplanned, unofficial presence — that stood between the crew and death.

4. Humour as a Coping Mechanism: The use of 'slightly dead' is a humorous understatement that reflects how astronauts and space workers must maintain a calm, even light-hearted attitude in the face of constant danger.

Overall, the line suggests that life in space is always uncertain, and survival often depends on factors that cannot be fully anticipated or controlled.

Arthur C. Clarke masterfully blends science fiction with humour throughout the story:

1. The Absurdity of the Situation: The idea of a canary on a space station is inherently comic. The contrast between the high-tech, serious environment of a space station and the presence of a small, singing bird creates an amusing incongruity.

2. Sven's Justification: When Sven is caught with Claribel, he solemnly claims to be conducting a scientific experiment on animal behaviour in space. This pompous scientific justification for what is essentially smuggling a pet is gently humorous.

3. Claribel's Aerial Acrobatics: The description of Claribel performing loops and graceful manoeuvres in zero gravity — something no Earth-bound canary could do — is both scientifically interesting and delightfully funny.

4. The Understatement 'Slightly Dead': The phrase 'we should soon have been slightly dead' is a classic example of British understatement used for comic effect. Death is the most serious of outcomes, yet it is described as 'slight,' which is absurdly funny.

5. Jim's Sheepish Expression: After confidently dismissing the warning about the air and then being proven wrong, Jim returns with a 'sheepish expression.' This moment of human embarrassment in a life-or-death situation adds a light-hearted touch.

6. The Pipe of Peace: Comparing the oxygen bottle to a 'pipe of peace' is a humorous and imaginative simile that lightens the tension of the dangerous situation.

Through these techniques, Clarke makes the story entertaining and accessible while still delivering a serious message about science, safety, and the value of curiosity.

(This is a reflective/creative question. A model answer is provided below.)

Sven would likely reflect on this experience with a mixture of relief, pride, and vindication. He had always believed in the value of his unofficial experiment, even when others were amused or sceptical. When Claribel fainted and her condition alerted the crew to the failing air purifier, Sven's seemingly eccentric decision to bring a canary aboard was proven to be not just harmless, but genuinely life-saving.

He would feel a deep sense of gratitude — both for Claribel's survival and for the fact that her presence had saved the entire crew. He might reflect on how the ancient wisdom of miners using canaries had found a new application in the most modern of environments: a space station.

Sven might also feel a sense of humility, recognising that he had not planned for Claribel to be a safety device — it was a happy coincidence born of curiosity. This would reinforce his belief that curiosity and open-mindedness in science can lead to unexpected but invaluable discoveries.

Finally, he would feel a strong bond with Claribel, knowing that this small bird had repaid his care and affection by saving his life and the lives of his colleagues.

1. narrow path
2. nagging worry
3. vague plan
4. sheepish look
5. inexplicable reason
6. sluggish traffic
7. hushed voices
8. sheepish expression

*(Note: 'sheepish' fits both 'look' and 'expression'; 'delighted' can also fit 'look' but 'sheepish' is more contextually appropriate for both given the story's usage.)*

Sentences from the text using these adjectives:
- 'I had a nagging headache' (nagging)
- 'vague memories of fitful, disturbed dreams' (vague)
- 'He came back ten minutes later with a sheepish expression' (sheepish)
- 'an inexplicable snatch of birdsong' (inexplicable)

(i) breakfast + lunch = brunch — a meal eaten between breakfast and lunch hours (example given)

(ii) motor + hotel = motel — a roadside hotel designed primarily for motorists

(iii) smoke + fog = smog — a type of air pollution that is a mixture of smoke and fog

(iv) situation + comedy = sitcom — a type of comedy television programme based on characters in amusing everyday situations

(v) video + log = vlog — a blog in which the postings are primarily in video form

(vi) spoon + fork = spork — a utensil that is a combination of a spoon and a fork

(vii) web + seminar = webinar — a seminar conducted over the internet

In the given sentence, 'will' denotes future time.

Explanation: 'Will' is used here to talk about a future event or situation — what it will mean when you hear birdsong in a space station in the future. It expresses a future certainty or prediction.

1. Our flight leaves (Simple Present — scheduled/timetabled event) at 10.00 a.m. tomorrow.

2. They are going to finish (going to — planned intention) the project by the end of this week.

3. The weather forecast says it will rain (will — prediction based on information/forecast) later today.

4. We are moving (Present Progressive — personal arrangement/fixed plan) into our new house next month.

5. I am starting (Present Progressive — personal arrangement) my new hobby class next Monday.

6. She is going (going to / Present Progressive — personal plan) to the mall this afternoon.

7. The team has / is having a meeting at 3.00 p.m. tomorrow. *(Present Progressive for fixed arrangement)* — is having a meeting at 3.00 p.m. tomorrow.

8. I will help (will — offer/promise expressing willingness) you with your homework after dinner.

By 2040, artificial intelligence 1. will have revolutionised (Future Perfect — completed by a certain future time) medical treatments. Researchers 2. will have developed (Future Perfect — completed by end of decade) AI-powered diagnostic tools that 3. will transform (will — future prediction) healthcare by the end of this decade. Next week, the International Science Congress 4. opens (Simple Present — scheduled event) to showcase advancements in AI and robotics. In the coming years, robots 5. will be assisting (Future Progressive — ongoing future action) surgeons in performing complex operations. Years ago, experts had predicted that AI would reshape our world, and now, as we approach the future, this 6. will be (will — future prediction/certainty) our new reality.

Note: As the audio transcript is not available to the student in the text (it is provided separately to the teacher on page 249), the following answers are based on the clues given in Part II of the listening exercise.

1. Toby misses his school. — ✗ (False) — Toby misses his 'planet and home' (not specifically school).
2. Monika accepts Toby as her friend. — ✓ (True)
3. Monika asks Toby about one of his facial features. — ✓ (True) — She asks about his eye.
4. Toby tells Monika that she had a banana for breakfast. — ✓ (True)
5. Toby shares that he can see much clearer with a closed eye. — ✗ (False) — Toby says he can see beyond mountains and oceans with his eye, not that he sees clearer with a closed eye.

1. Toby: I miss my planet and home.
2. Toby: Well, we Martians don't need to eat anything. We get our energy from the Sun.
3. Monika: Oh! Don't you ever feel like having ice-creams and chocolates!
4. Monika: Okay, tell me one thing. How are you able to see only with one eye?
5. Toby: I can see beyond mountains and oceans, woods and even cities.

*(Note: Exact words depend on the audio transcript provided to the teacher. The above answers are the most contextually appropriate based on the clues in the exercise.)*

From the text:
- ballet → the 't' is silent: ballet (pronounced ba-lay)
- whistle → the 't' is silent: whistle (pronounced wi-sl)
- alarm → the 'l' is NOT silent; no silent letter here (pronounced uh-laam — the 'l' is silent in British English: alarm)
- psychologist → the 'p' is silent: psychologist (pronounced sai-ko-luh-juhst)

Additional words:
- receipt → p is silent
- debris → s is silent (French origin, pronounced deh-bree)
- pneumonia → p is silent
- almond → l is silent (in many accents)
- foreign → g is silent
- island → s is silent
- wreck → w is silent
- aisle → s is silent
- campaign → g is silent
- fasten → t is silent

THE IMPORTANCE OF INTERNET
*By [Student's Name]*

Introduction
The internet has become one of the most transformative inventions of the modern age. From the moment we wake up to the time we go to sleep, the internet plays a central role in our daily lives. It has changed the way we communicate, learn, work, and entertain ourselves, making the world a smaller and more connected place.

Uses and Importance
The internet serves a multitude of purposes that make it indispensable in today's world. In the field of education, it provides students and teachers with access to a vast ocean of knowledge through e-books, online courses, educational videos, and research databases. Platforms like e-Pathshala and Khan Academy have made quality education accessible to learners in even the most remote areas.

In the realm of communication, the internet has revolutionised the way people connect. Social media platforms, emails, and video calling applications allow us to stay in touch with friends, family, and colleagues across the globe instantly. For businesses, the internet has opened up new markets through e-commerce, enabling entrepreneurs to reach customers worldwide.

The internet also plays a crucial role in healthcare, where patients can consult doctors online, access medical information, and even receive telemedicine services. In entertainment, streaming platforms provide music, films, and games at the click of a button.

Conclusion
The internet is not merely a tool — it is the backbone of modern civilisation. As we move further into the digital age, its importance will only grow. However, it is equally important to use the internet responsibly and wisely. As the saying goes, 'With great power comes great responsibility.' Let us harness the power of the internet to learn, grow, and build a better world for all.

The poem describes the magic of seeing the world through a 1. magnifying glass (round glass). It reveals how tiny things like 2. shells and 3. moss can appear vast and complex. Even a 4. drop of water can seem like a hive of 5. bees. The poet is impressed at how the spider spins its 6. web-silk from its 7. spinnerets. The poem ends with the idea that, through lenses, the 8. moon could seem within reach.

1. The main idea of the poem is the transformative power of close observation through the magnifying glass.

Explanation: The poem is about how a magnifying glass enables the speaker to observe ordinary, tiny things in extraordinary detail. The focus is on the act of close, curious observation.

2. The tone of the poem is wonder and curiosity.

Explanation: Throughout the poem, the speaker expresses amazement and delight at the hidden wonders revealed by the magnifying glass, creating a tone of wonder and curiosity.

3. The poem has six stanzas with four lines in each stanza. Hence, it is a quatrain.

Explanation: A quatrain is a stanza of four lines. The poem consists of six such four-line stanzas.

4. The rhyme scheme of the poem is ABCB.

Explanation: In each stanza, the second and fourth lines rhyme, while the first and third lines do not, giving the pattern ABCB.

1. Simile (a comparison using 'like' or 'as'):
- *'Eyeing the moon, 'twould seem you'd walk there in an afternoon!'* — This implies a comparison suggesting the moon seems as close as a short walk away, though it is not a direct simile with 'like' or 'as.'
- A clearer example of simile-like comparison: *'Of but an inch of moss / A forest—flowers and trees'* — the moss is compared to a forest.

*(Note: The poem uses more metaphors than direct similes. The most commonly cited simile-like expression is the comparison of the moon to something within walking distance.)*

2. Alliteration (repetition of the same initial consonant sound):
- *'flowers and trees'* — repetition of the 'f' sound is not alliteration here, but:
- *'slow-motion'* — not in this poem
- 'The tigerish claws he has!' — 't' sound
- 'woven web-silk' — repetition of the 'w' sound: *'woven web'*
- 'forest—flowers' — 'f' sound

3. Metaphor (a direct comparison without 'like' or 'as'):
- *'Magic talk'* — the magnifying glass is metaphorically said to 'make Magic talk,' meaning it reveals magical hidden truths.
- *'A forest—flowers and trees'* — an inch of moss is metaphorically described as a forest.
- *'tigerish claws'* — the spider's claws are metaphorically described as tiger-like, giving the spider a fierce, predatory quality.

1. In the line, 'A myriad shells show in a scrap of chalk', the magnifying glass reveals the countless tiny shell-like structures and intricate patterns hidden within a small piece of chalk that are invisible to the naked eye.

2. In the line, 'A forest—flowers and trees' the poet uses the imagery of nature to emphasise the extraordinary complexity and richness of even the tiniest natural objects (like a patch of moss) when viewed under magnification — what appears to be a mere inch of moss transforms into what looks like an entire forest with flowers and trees.

The poet uses exclamation marks in these lines because it expresses the speaker's intense surprise, excitement, and wonder at the extraordinary details revealed by the magnifying glass. The exclamation marks convey the speaker's spontaneous, enthusiastic reaction to what he sees, making the poem feel lively and emotionally engaged.

In the phrase 'Magic talk,' the poet uses personification to describe the magnifying glass because it gives the glass a human-like quality — the ability to 'talk' or communicate — suggesting that the magnifying glass reveals hidden secrets and stories of the natural world that are otherwise invisible, as if it were speaking to the observer and sharing magical knowledge.

This is because it supports the theme of scientific curiosity and the wonder of close observation as the speaker reveals that the natural world is full of extraordinary complexity and beauty hidden within the most ordinary and seemingly insignificant objects, which only careful, curious observation can uncover.

In the final stanza the poet shifts from small, everyday objects being magnified to a celestial body like the moon because he wants to show that the power of lenses and scientific observation is limitless — it can bring not only the microscopic world closer but also the vast, distant universe within reach. This shift emphasises that curiosity and the tools of science (like lenses) can bridge the gap between the infinitely small and the infinitely large, inspiring a sense of boundless wonder and possibility.

False. The poet does not use magical powers. The 'magic' referred to in the poem is metaphorical — it describes the seemingly magical ability of the magnifying glass (a scientific instrument) to reveal hidden wonders in ordinary objects. The power belongs to the glass itself, not to any supernatural ability of the poet.

The line that expresses the presence of intricate patterns in ordinary objects is:

'A myriad shells show in a scrap of chalk'

This line reveals that even a tiny, seemingly plain piece of chalk contains countless (myriad) intricate shell-like patterns when viewed through the magnifying glass.

The comparison of 'an inch of moss' to a 'forest — flowers and trees' suggests that through the magnifying glass, the speaker sees the world in a completely transformed way. What appears to be a tiny, insignificant patch of moss to the naked eye becomes, under magnification, as rich, complex, and vast as an entire forest with flowers and trees. This suggests that the speaker believes the natural world is infinitely more detailed and wondrous than it appears at first glance, and that careful, close observation (aided by science) can reveal a hidden universe of beauty and complexity in even the smallest things.

Correct Option: B. Fascinated

Justification: Throughout the poem, the speaker expresses continuous amazement and delight at what the magnifying glass reveals — from shells in chalk to a forest in moss to the spider's claws. The use of exclamation marks, vivid descriptions, and the word 'marvellous' all indicate that the poet is deeply fascinated by the hidden wonders the glass uncovers.

The spider holds special significance in the poem as one of the most vivid and dramatic examples of what the magnifying glass reveals. Under magnification, the spider is transformed from a small, ordinary creature into something almost fearsome and magnificent. The poet describes its 'tigerish claws' — a powerful metaphor that gives the spider a fierce, predatory quality usually associated with large animals like tigers. The mention of 'all those eyes' further emphasises the spider's complex, alien appearance under the glass.

The spider is significant because it illustrates the poem's central theme: that the natural world, even in its smallest creatures, contains extraordinary complexity and drama that is invisible to the naked eye. The spider also represents the idea that what we consider small or insignificant can, upon closer observation, reveal itself to be intricate, powerful, and worthy of wonder.

Without the magnifying glass, the speaker's view of the natural world would be limited to what the naked eye can see — a world of ordinary, unremarkable surfaces. A scrap of chalk would just be a piece of chalk; an inch of moss would just be a small green patch; a spider would be a tiny, insignificant creature; and a drop of water would appear plain and empty.

The magnifying glass is what transforms the speaker's perception, revealing the hidden complexity, beauty, and drama within these ordinary objects. Without it, the speaker would miss the myriad shells in chalk, the forest-like structure of moss, the tigerish claws of the spider, and the hive-like activity in a drop of water.

In essence, without the magnifying glass, the speaker would see a simpler, less wondrous world — one that does not inspire the same sense of curiosity, fascination, and awe that the poem celebrates. The glass is not just a tool; it is a gateway to a deeper understanding and appreciation of nature.

The poem ends with the idea of the moon being within reach to create a sense of limitless possibility and to bring the poem to a grand, inspiring conclusion. Throughout the poem, the magnifying glass has been shown to make the very small appear large and accessible. In the final stanza, the poet extends this idea to the cosmos — suggesting that with the right lenses (like telescopes), even the distant moon could seem close enough to walk to 'in an afternoon.'

This ending serves several purposes:
1. It shows the progression from the microscopic to the cosmic — from shells in chalk to the moon — demonstrating that the spirit of scientific curiosity knows no bounds.
2. It inspires the reader with a sense of wonder and ambition, suggesting that science and observation can bring even the most distant and seemingly unreachable things within human grasp.
3. It reinforces the poem's central theme: that curiosity and the tools of science expand our world and our understanding of it in extraordinary ways.

The speaker's attitude towards nature and the act of observation is one of deep wonder, curiosity, and reverence. The speaker is not a passive observer but an active, enthusiastic explorer who delights in discovering the hidden details of the natural world.

Towards nature, the speaker shows a sense of awe and appreciation. Every object — a scrap of chalk, a patch of moss, a drop of water, a spider — is treated as a source of wonder and fascination rather than something ordinary or unimportant.

Towards observation, the speaker believes that careful, close looking (aided by tools like the magnifying glass) is a transformative act. It changes how we see the world and reveals truths that are invisible to the casual glance. The speaker's use of exclamation marks and vivid, enthusiastic descriptions shows that observation is not a dry, scientific exercise but a joyful, almost magical experience.

Overall, the speaker's attitude reflects the values of scientific curiosity — the belief that the world is endlessly fascinating and that the more closely we look, the more wonders we discover.

(This is a personal response question. A model answer is provided.)

My favourite part of the poem is the stanza describing the spider:

*'I lie in wait and watch / How the deft spider jets / The woven web-silk / From his spinnerets; / The tigerish claws he has! / And oh! the silly flies / That stumble into his net— / With all those eyes!'*

I find this part most captivating because it transforms a familiar, everyday creature — the spider — into something dramatic and almost mythical. The metaphor 'tigerish claws' is particularly striking, as it gives the tiny spider the ferocity of a large predator. The exclamation marks convey the speaker's genuine excitement and surprise, making the reader feel as if they too are seeing a spider for the first time through a magnifying glass.

This stanza also captures a complete story — the patient spider, the intricate web, and the unfortunate flies — in just a few lines, making it both vivid and memorable. It perfectly illustrates the poem's central message: that the natural world, even in its smallest details, is full of drama, beauty, and wonder.

With his 1. deft description, the author has written the story beautifully 2. woven with fascinating details. When you read the story, you will surely enjoy the 3. marvellous storytelling technique that attracts all kinds of readers. What makes the story interesting is the superb way of describing the 4. myriad emotions and feelings of the characters. The reader will 5. stumble upon the unexpected twists and turns that 6. surpass all our understanding and make us wonder at the narrative power of the author.

1. a swarm of — (iv) locusts (a swarm of locusts)
2. a constellation of — (vi) stars (a constellation of stars)
3. a grove of — (v) trees (a grove of trees)
4. a troupe of — (iii) dancers (a troupe of dancers)
5. a battalion of — (ii) soldiers (a battalion of soldiers)
6. a fleet of — (i) ships (a fleet of ships)

1. apple of one's eye — (v) a person who is very precious or important
2. in the blink of an eye — (iii) something that happens very quickly
3. keep an eye on something or somebody — (i) watch something or someone closely
4. turn a blind eye — (ii) act as if you do not see or notice
5. see eye to eye — (vi) agree with each other
6. bird's-eye view — (iv) an overall look at something

The nouns to which the suffix '-ish' can be added to make adjectives are:

1. girl → girlish (behaving like a girl)
2. boy → boyish (behaving like a boy)
3. moon → moonish (resembling the moon; though less common, it is grammatically possible)

The words glass, book, silk, water, and scrap do not typically form standard adjectives with the suffix '-ish' in common usage.

*(Note: 'girlish' and 'boyish' are the most standard and commonly accepted answers.)*

Based on the context clues provided in the exercise (the transcript is on page 250 for the teacher), the four true statements are:

1. The father is surprised by the fact that India was involved in the invention of radio broadcasting and fibre optics. — ✓ True (The father expresses surprise at these facts.)

5. The daughter expresses pride and admiration for India's role in global inventions. — ✓ True (The daughter is enthusiastic and proud while sharing the information.)

6. The daughter is excited as she shares new discoveries about India's contributions with her father. — ✓ True (The daughter is clearly excited and enthusiastic.)

3. The father shows little interest in the information about the origin of snakes and ladders. — ✓ True (The father is more questioning/confirming rather than showing deep interest in this particular fact.)

The false statements are:
- Statement 2: The daughter does not appear indifferent — she is engaged and proud.
- Statement 4: The father is not simply confirming facts; he is asking questions and expressing surprise.

DEEPA: Hi Asma! Our Science teacher mentioned that you have a wonderful idea for the Science Fair project.

ASMA: (hesitatingly) Yes, I do. But I'm not sure if it is good enough.

DEEPA: (encouragingly) Don't worry! Every great idea starts with a little doubt. Tell me, what have you been thinking?

ASMA: (slowly gaining confidence) Well, I was thinking we could make a working model of a water purification system. You know, to show how dirty water can be cleaned using simple materials like sand, gravel, and charcoal.

DEEPA: (excitedly) Oh, that sounds brilliant! It's practical, relevant, and it connects to real-world problems like clean water access. I think the judges will love it!

ASMA: (smiling) Really? I was worried it might seem too simple compared to what other teams might make.

DEEPA: Simple is powerful, Asma! The best science models are the ones that explain something important in a clear way. Besides, we can add a chart showing the science behind each layer of filtration.

ASMA: (enthusiastically) Yes! And we could also include data on water pollution in India to make it more impactful.

DEEPA: (nodding) Exactly! Let's divide the work. I'll research the data and prepare the charts, and you can start gathering the materials for the model.

ASMA: (confidently) That sounds like a great plan. I'm glad I shared the idea with you, Deepa!

DEEPA: (warmly) That's what teammates are for! Let's make this the best project at the Science Fair!

The correct chronological order of events in Bibha Chowdhuri's life is:

1. 3. Bibha Chowdhuri was born in pre-independent India.
2. 5. She joined the University of Manchester under the guidance of the celebrated Nobel Laureate, Patrick M.S. Blackett.
3. 6. She was nominated for a Nobel Prize by Erwin Schrödinger.
4. 2. She became the first woman faculty member at the Tata Institute of Fundamental Research (TIFR).
5. 4. The Government of India declared a chair professorship in Bibha's name.
6. 1. The International Astronomical Union (IAU) honoured her legacy by renaming a star in the constellation Leo—HD 86081—as 'Bibha'.

The mention of Patrick M.S. Blackett, a Nobel Laureate, is significant because it establishes the high calibre of the academic environment in which Bibha Chowdhuri worked and the exceptional quality of her research. Being guided by a Nobel Laureate indicates that Bibha was recognised as a talented and capable scientist worthy of working with the best minds in the world. It also lends credibility and prestige to her work on cosmic rays, showing that her research was conducted at the highest international level. Furthermore, it highlights that despite the barriers faced by women scientists of her era, Bibha earned the respect and mentorship of one of the most celebrated scientists of the time.

Correct Option: B. The world was still doubtful about the capabilities of women scientists.

Justification: The fact that the press felt the need to specifically label her as 'India's New Woman Scientist' — emphasising her gender — suggests that women scientists were still considered unusual and noteworthy. If women in science had been common and fully accepted, there would have been no need to highlight her gender. The title reflects a society that was still surprised and somewhat uncertain about women's place in the scientific world.

Correct Option: B. frequently seen in public

Justification: The word 'celebrated' in this context means famous, highly respected, and renowned for achievements. It does NOT mean 'frequently seen in public,' which is a superficial, social meaning of the word. Options A, C, and D (famous and highly respected; renowned for their achievements; well-regarded in their field) are all valid meanings of 'celebrated' in this context.

The phrase 'She has an eye for Cosmic Rays' suggests that Bibha Chowdhuri possessed a natural talent, sharp insight, and exceptional ability to observe, analyse, and understand the complex phenomenon of cosmic rays — qualities that set her apart as a scientist of remarkable skill and intuition in her field.

Correct Option: B. The challenges remain, but progress has been made.

Justification: The extract states that 'the journey from Bibha Chowdhuri's era to today's women scientists has been long and arduous, but it is also inspiring.' The phrase 'how far we've come — and how much further we have to go' clearly indicates that while significant progress has been made, challenges still remain for women in science.

The phrase 'Bibha Chowdhuri's legacy lives on' suggests that her contributions to science, her pioneering spirit, and her example as a woman who broke barriers in a male-dominated field continue to inspire and influence future generations of scientists, particularly women, long after her lifetime. Her work, her story, and the values she embodied — perseverance, curiosity, and dedication to science — remain relevant and impactful even today.

Bibha Chowdhuri is referred to as a 'beacon' and a 'beam of light' for the following reasons:

1. Literal Connection: Her name 'Bibha' means 'beam of light' in Sanskrit, making the metaphor personally meaningful and appropriate.

2. Symbolic Meaning: A beacon is a guiding light that shows the way to those who might otherwise be lost. Bibha's life and achievements serve as a guiding light for young women who aspire to pursue careers in science, showing them that it is possible to succeed despite obstacles.

3. Illuminating the Path: Just as a beam of light illuminates darkness, Bibha's work and story illuminate the path for future generations of women scientists in India, inspiring them to pursue their passions and break barriers.

4. Enduring Influence: A beacon continues to shine and guide long after it is first lit. Similarly, Bibha's legacy continues to inspire and guide even decades after her contributions were made.

This sentence is an opinion.

Explanation: While it is a fact that Bibha Chowdhuri made significant contributions to science and that her name means 'beam of light,' the statement that she 'was the beacon' and that her story 'continues to inspire young women' is a subjective judgement and interpretation. It expresses the writer's view of her significance and impact, which cannot be objectively verified or measured. Different people may have different views on the extent of her inspirational influence, making this an opinion rather than a verifiable fact.

Bibha Chowdhuri is considered a pioneer in the field of science for several reasons:

1. Groundbreaking Research: She conducted significant research in the field of cosmic rays, contributing to our understanding of these high-energy particles from space. Her Ph.D. thesis on cosmic rays earned recognition both in India and internationally.

2. First Woman Faculty at TIFR: She became the first woman faculty member at the Tata Institute of Fundamental Research (TIFR), one of India's most prestigious scientific institutions. This was a historic achievement that opened doors for women in Indian science.

3. International Recognition: She worked under Nobel Laureate Patrick M.S. Blackett at the University of Manchester and was nominated for a Nobel Prize by the eminent physicist Erwin Schrödinger — a testament to the exceptional quality of her work.

4. Breaking Barriers: She pursued a career in science at a time when women faced enormous social, cultural, and institutional barriers. Her determination and success in the face of these challenges make her a true pioneer.

5. Lasting Legacy: A star has been named 'Bibha' in her honour by the International Astronomical Union, and the Government of India has established a chair professorship in her name — recognitions that reflect her enduring impact on science.

Bibha Chowdhuri's nomination for a Nobel Prize by Erwin Schrödinger — one of the most celebrated physicists of the 20th century and himself a Nobel Laureate — tells us a great deal about her exceptional abilities:

1. World-Class Scientific Talent: Schrödinger was a towering figure in physics, known for his foundational contributions to quantum mechanics. For him to nominate Bibha for a Nobel Prize indicates that her work was of the highest international standard.

2. Recognition Across Borders: The nomination shows that her contributions were recognised not just in India but by the global scientific community. Her research was considered significant enough to be worthy of the most prestigious award in science.

3. Intellectual Courage: The fact that a scientist of Schrödinger's stature supported her work suggests that Bibha was not merely competent but truly innovative and intellectually courageous in her approach to scientific problems.

4. Overcoming Bias: In an era when women scientists were often overlooked or undervalued, receiving a Nobel nomination from such a distinguished scientist is a powerful indicator that Bibha's abilities were so outstanding that they could not be ignored, even in a male-dominated field.

The statement that Bibha Chowdhuri never worked for awards or recognition is supported by the following evidence from the text:

1. Unofficial and Unrecognised Work: Despite making significant contributions to science, Bibha did not receive the Nobel Prize for which she was nominated, and much of her work went unrecognised during her lifetime. Yet she continued her research with dedication and passion.

2. Posthumous Recognition: Most of the formal recognition she received — the renaming of a star as 'Bibha' by the IAU, the chair professorship in her name by the Government of India — came after her death. This suggests that she did not seek or receive recognition during her active years, yet she continued her work regardless.

3. Dedication to Science: The text describes her as someone who was driven by a love of science and a desire to contribute to knowledge, not by the pursuit of fame or awards. Her persistence in the face of barriers and lack of recognition demonstrates that her motivation was intrinsic.

4. Pioneering Spirit: She broke barriers not to become famous but because she was passionate about her field. Her work speaks for itself, and the recognition that came later was a tribute to the quality of her contributions, not something she had sought.

The renaming of a star in the constellation Leo as 'Bibha' by the International Astronomical Union serves as both a literal and symbolic recognition of Bibha Chowdhuri's contributions:

Literal Recognition:
Literally, naming a celestial body after a scientist is one of the highest honours in the scientific community. It is a permanent, universal tribute that places her name in the cosmos — the very domain she spent her life studying. The star HD 86081 in the constellation Leo will carry her name for as long as it exists, ensuring that her contribution is remembered by astronomers and scientists worldwide.

Symbolic Recognition:
1. Beam of Light: Her name 'Bibha' means 'beam of light,' and a star is literally a source of light. Naming a star after her is therefore a deeply symbolic act that connects her identity with the light she brought to science and to the lives of future women scientists.
2. Reaching for the Stars: The phrase 'reaching for the stars' is a common metaphor for achieving the highest ambitions. By having a star named after her, Bibha's life story becomes a symbol of what is possible when one pursues their passion with dedication and courage.
3. Eternal Legacy: Stars are ancient and enduring. Naming one after Bibha symbolises that her legacy, like starlight, will continue to shine and inspire long after she is gone.
4. Cosmic Connection: As a scientist who studied cosmic rays — particles that travel across the universe — having a star named after her creates a beautiful, symbolic connection between her life's work and the cosmos she explored.

The roles of women in ISRO (Indian Space Research Organisation) today reflect significant and inspiring changes in societal attitudes towards women in STEM (Science, Technology, Engineering, and Mathematics) in India:

1. Increased Representation: Women now hold key positions in ISRO, including leading roles in mission planning, engineering, and scientific research. This is a dramatic change from the era of Bibha Chowdhuri, when women in science were rare exceptions.

2. Changing Perceptions: The visibility of women scientists and engineers at ISRO — particularly during high-profile missions like Chandrayaan and Mangalyaan — has helped change public perceptions. When millions of Indians see women celebrating the success of space missions, it sends a powerful message that science and technology are not exclusively male domains.

3. Inspiration for Future Generations: The success of women at ISRO inspires young girls across India to pursue careers in STEM. This creates a positive cycle where representation leads to inspiration, which leads to more representation.

4. Institutional Support: The fact that ISRO actively employs and promotes women scientists reflects a broader institutional commitment to gender equality in science, which was largely absent in Bibha Chowdhuri's time.

5. Social Progress: The growing acceptance of women in STEM reflects wider social changes in India — greater access to education for girls, changing family attitudes, and government policies promoting women's participation in science and technology.

However, as the text notes, there is still 'much further to go,' acknowledging that gender equality in STEM remains an ongoing journey.

The writer's purpose in highlighting the contributions of Bibha Chowdhuri and other modern women scientists is multi-layered:

1. Reclaiming Lost History: Bibha Chowdhuri's contributions were largely overlooked during her lifetime. By bringing her story to light, the writer aims to restore her rightful place in the history of Indian science and ensure that her achievements are not forgotten.

2. Inspiring Young Readers: By presenting the story of a woman who overcame enormous barriers to make significant scientific contributions, the writer aims to inspire young readers — particularly girls — to pursue their interests in science without being deterred by obstacles or self-doubt.

3. Challenging Stereotypes: The text challenges the stereotype that science is a male domain by showcasing the achievements of women scientists, both historical and contemporary. This helps broaden readers' understanding of who can be a scientist.

4. Celebrating Indian Science: The text also serves to highlight India's rich scientific heritage and the contributions of Indian scientists — both men and women — to global knowledge.

5. Promoting Gender Equality: By drawing attention to the barriers Bibha faced and the progress made since then, the writer advocates for continued efforts to achieve gender equality in science and other fields.

6. Connecting Past and Present: By linking Bibha's story to the achievements of modern women scientists at ISRO and elsewhere, the writer shows that progress is possible and that the foundation laid by pioneers like Bibha continues to bear fruit.

This text about Bibha Chowdhuri can significantly shape people's perceptions of the role of women in traditionally male-dominated fields in the following ways:

1. Demonstrating Capability: By showcasing Bibha's exceptional scientific achievements — her Ph.D. research, her Nobel nomination, her pioneering role at TIFR — the text provides concrete evidence that women are fully capable of excelling in demanding, technical fields. This challenges the assumption that such fields are naturally better suited to men.

2. Highlighting Systemic Barriers: The text draws attention to the fact that the challenges women face in male-dominated fields are not due to lack of ability but to systemic barriers — social expectations, institutional biases, and lack of support. This encourages readers to question and challenge these barriers rather than accepting them as natural.

3. Broadening the Definition of Success: Bibha's story shows that success is not always measured by awards and recognition received during one's lifetime. Her posthumous recognition reminds us that contributions can be valuable even when they are not immediately acknowledged.

4. Encouraging Mentorship and Support: The text implicitly encourages those in positions of power — like Patrick M.S. Blackett and Erwin Schrödinger, who supported Bibha — to mentor and champion talented individuals regardless of gender.

5. Inspiring Action: By ending with the idea that Bibha's legacy continues to inspire young women, the text motivates readers to actively support gender equality in all fields — not just science — and to recognise and celebrate the contributions of women who have been overlooked.

Across:
4. core → periphery (the outer edge, opposite of the core/centre)
5. dependent → independent (not relying on others)
7. extinguish → ignite (to light or start a fire, opposite of putting it out)
8. terrestrial → celestial (relating to the sky/space, opposite of relating to the Earth)

Down:
1. effortless → arduous (requiring great effort, opposite of effortless)
2. weakness → strength (power and ability, opposite of weakness)
3. neglect → nurture (to care for and encourage, opposite of neglect)
6. trivial → significant (important and meaningful, opposite of trivial)

1. They are considered to be the first people to start the online markets. → pioneers

2. A scientist who studies matter, energy, light, etc. → physicist

3. Most of my friends are my classmates and are my age. → peers

4. We first welcomed all the famous and important people in folk song for the award ceremony. → luminaries

5. My brother finally succeeded in his business because of his continuous efforts and determination. → persistence

6. We should remove all the things that block our way in achieving success. → barriers

1. member + ship = membership
2. govern + ment = government
3. partner + ship = partnership
4. child + hood = childhood
5. citizen + ship = citizenship
6. entertain + ment = entertainment
7. brother + hood = brotherhood
8. agree + ment = agreement

The acronyms to be found and circled in the grid are:

1. NASA — National Aeronautics and Space Administration
2. AIIMS — All India Institute of Medical Sciences
3. AYUSH — Ayurveda, Yoga and Naturopathy, Unani, Siddha, and Homoeopathy
4. NIPER — National Institute of Pharmaceutical Education and Research
5. WHO — World Health Organization

In the grid provided:
- AIIMS can be found in the first row: A-I-I-M-S
- AYUSH can be found reading downward in the first column: A-Y-U-S-H
- WHO can be found in the third row: W-H-O
- NIPER can be found reading across: N-I-P-E-R
- NASA can be found reading across in the seventh row: N-A-S-A

*(Students should locate and circle these in the actual grid in their textbook.)*

Last year, significant advancements in medical science 1. were published in leading medical journals when a new vaccine for malaria 2. was discovered. The vaccine 3. was tested through several clinical trials and results 4. were recorded in those journals. During the trials, blood samples 5. were taken regularly from participants to monitor their immune response. The amount of antibodies produced 6. was measured carefully to assess the effectiveness of the vaccine.

An experiment was conducted to investigate the effects of light on plant growth. Various plants were placed under different light conditions and their growth was measured over several weeks. Data was recorded daily to track the height of each plant. At the end of the experiment, the results were analysed and it was found that plants exposed to natural light grew significantly taller than those under artificial light. It was concluded that sunlight plays a crucial role in plant development. The findings were presented to the class, highlighting the importance of light in enhancing photosynthesis and overall plant health.

Chandrayaan's landing mission involves several key steps. First, the spacecraft 1. (C) was launched towards the Moon from the Earth. Then, it 2. (C) is positioned to enter the Moon's orbit. After reaching the Moon's orbit, the spacecraft's path 3. (B) was adjusted for landing. Next, the spacecraft 4. (B) was slowed down as it nears the Moon's surface. Finally, the rover 5. (A) is released to explore the surface and collect valuable data.

Explanation of choices:
(i) C — 'was launched' (simple past passive, referring to a completed action)
(ii) C — 'is positioned' (simple present passive, describing the process)
(iii) B — 'was adjusted' (simple past passive)
(iv) B — 'was slowed down' (simple past passive)
(v) A — 'is released' (simple present passive, describing the process)

1. What is one of the key benefits of AI in the healthcare sector?
Answer: (ii) Provides personalised treatments and faster diagnoses.

2. How did AI play a crucial role during the global pandemic?
Answer: (ii) AI assisted in speeding up the discovery of new medicines.

3. What example was given regarding AI's role in renewable energy?
Answer: (iii) AI is improving the performance of wind turbines and solar panels.

4. What does AI offer to teachers in the field of education?
Answer: (iii) Helps teachers analyse student performance.

5. What is one of the user-friendly features that AI is enhancing for people with disabilities?
Answer: (ii) Improves speech recognition and voice command technologies.

ZONAL SCIENCE EXHIBITION: A CELEBRATION OF YOUNG MINDS
*Reported by [Student's Name], Student Editor*

The Zonal Science Exhibition was hosted by [School Name] on [Date] in the school's main auditorium and science block. The event was organised by the school's Science Department under the guidance of the Principal, [Principal's Name]. Teams from 25 schools across the zone participated enthusiastically, making it one of the most vibrant and well-attended science events of the year.

The exhibition was inaugurated by the Chief Guest, [Name], [Designation], who was welcomed by the Principal and the Head of the Science Department. The event was held with the aim of encouraging scientific thinking, innovation, and curiosity among young students. A variety of competitions were organised, including a Science Quiz, Science Model Exhibition, and a Poster Presentation. The Science Quiz was conducted in multiple rounds, testing participants' knowledge of physics, chemistry, biology, and current scientific developments. The Science Model Exhibition was the highlight of the day, with teams presenting working models on topics ranging from renewable energy and water conservation to artificial intelligence and space exploration.

Among the models exhibited, a working model of a solar-powered water purification system by the team from [School Name] drew particular appreciation from the judges and visitors. The Chief Guest praised the creativity and scientific rigour displayed by the participants, noting that such exhibitions were vital in nurturing the scientists and innovators of tomorrow. The trophy for the Best Exhibit was awarded to [Winning School Name] for their innovative model on [Topic]. The event concluded with a vote of thanks by the Science Club President, and participants left inspired and motivated to explore the wonders of science further.