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Important Questions

Matter in Our Surroundings

Tripura Board · Class 9 · Science

Most important questions from Matter in Our Surroundings for Tripura Board Class 9 Science board exam 2026. MCQs, short answer, and long answer questions with marks.

27 questions25 flashcards5 concepts

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A flowchart illustrating the processes by which matter changes from one state to another (solid, liquid, gas) and the conditions (temperature, pressure) that facilitate these changes.
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27 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which of the following properties belong to solids?

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Fixed shape, Fixed volume, Particles are closely packed

Solids have a fixed shape and fixed volume because their particles are closely packed and held together by strong forces of attraction. They cannot flow easily like liquids and are not highly compressible like gases.

2multiple correct

Which factors affect the rate of evaporation?

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Surface area, Temperature, Wind speed, Humidity

The rate of evaporation increases with increase in surface area, temperature, and wind speed, but decreases with increase in humidity. The color of the liquid does not significantly affect evaporation rate.

3multiple choice

The temperature at which a solid changes to liquid is called:

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Melting point

The melting point is the temperature at which a solid changes to liquid at atmospheric pressure. For ice, this is 0°C or 273 K. Boiling point is for liquid to gas conversion, and freezing point is for liquid to solid conversion.

4multiple correct

Which state of matter has particles that are:

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Most closely packed in solids, Freely moving in gases, Can slide over each other in liquids, Have maximum kinetic energy in gases

In solids, particles are most closely packed with least kinetic energy. In liquids, particles can slide over each other with intermediate kinetic energy. In gases, particles move freely with maximum kinetic energy and are farthest apart.

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Frequently Asked Questions

What are the important topics in Matter in Our Surroundings for Tripura Board Class 9 Science?
Matter in Our Surroundings covers several key topics that are frequently asked in Tripura Board Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Matter in Our Surroundings — Tripura Board Class 9 Science?
Understand the core concepts first, then work through the 27 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Matter in Our Surroundings?
There are 27 practice questions available for Matter in Our Surroundings. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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