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Fossil Fuels

Telangana Board · Class 10 · Environmental Education

Flashcards for Fossil Fuels — Telangana Board Class 10 Environmental Education. Quick Q&A cards covering key concepts, definitions, and formulas.

45 questions21 flashcards5 concepts

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21 Flashcards
Card 1Definition and Types

What are fossil fuels? Give three examples commonly used in Indian households.

Answer

Fossil fuels are exhaustible sources of energy formed from ancient organic matter. Three common examples used in Indian households are: 1) Coal - for heating and electricity generation, 2) Kerosene -

Card 2Characteristics

Why are fossil fuels called 'exhaustible' resources?

Answer

Fossil fuels are called exhaustible because they have limited reserves on Earth and cannot be renewed quickly. According to current data: Oil reserves will last 45 years, Gas reserves 72 years, and Co

Card 3Applications

List the main uses of fossil fuels in daily life.

Answer

Main uses include: 1) Cooking - LPG, kerosene, coal, 2) Transportation - petrol and diesel for vehicles, 3) Electricity generation - burning coal in power plants, 4) Heating - coal and kerosene for ro

Card 4Conservation Methods

How much LPG gas is wasted if you keep the stove on for 1 hour without cooking?

Answer

Approximately 7.25 grams of LPG gas is wasted per hour when the stove is kept on without cooking. This shows the importance of putting on the stove only after arranging all necessary cooking items.

Card 5Conservation Methods

What percentage of fuel can be saved by using pressure cookers compared to other cooking methods?

Answer

Pressure cookers can save: 20% fuel when cooking rice and 41.5% fuel when cooking meat compared to other cooking methods. This makes pressure cookers highly fuel-efficient cooking appliances.

Card 6Conservation Methods

Why should you soak food materials before cooking? How much fuel does it save?

Answer

Soaking food materials before cooking saves 22% of fuel because pre-soaked items cook faster, requiring less heating time. This is especially effective for rice, dal, and legumes.

Card 7Conservation Methods

What happens when mineral deposits form in pressure cookers and how does it affect fuel consumption?

Answer

Undissolved minerals get deposited as layers in pressure cookers. Even a 1mm thick layer requires 10% extra fuel for cooking. Therefore, pressure cookers must be cleaned regularly to maintain fuel eff

Card 8Conservation Methods

Compare the fuel efficiency of small burners versus big burners.

Answer

Small burners are more fuel-efficient than big burners, saving 6.5% more fuel. This is because small burners provide adequate heat with less gas consumption, making them ideal for most cooking needs.

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Frequently Asked Questions

What are the important topics in Fossil Fuels for Telangana Board Class 10 Environmental Education?
Fossil Fuels covers several key topics that are frequently asked in Telangana Board Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Fossil Fuels — Telangana Board Class 10 Environmental Education?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Fossil Fuels?
There are 21 flashcards for Fossil Fuels covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

Sources & Official References

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

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