Coal and Petroleum — Class 8 MCQs with Answers
Class 8 CBSE Science · Chapter 103
Pre-2026 syllabusThis chapter is from the older NCERT book. See the 2026-27 Class 8 Science chapters →
72 practice questions · 24 Easy · 24 Medium · 24 Hard · Updated
Jump to the 6 solved questions
Practise the most important Class 8 CBSE Science questions from Chapter 103, "Coal and Petroleum". You get 6 timed quizzes made from 72 NCERT-based MCQs, with answers and explanations. The questions are split into 24 Easy, 24 Medium and 24 Hard. Warm up on the basics, then move on to the exam-level questions that top scorers in CBSE Board exams get right.
To score well in "Coal and Petroleum", focus on clear concepts in physics, chemistry and biology basics. Each MCQ here is timed and uses exam-style marking (+4 correct, −1 wrong, 0 skipped). This helps you stay accurate when time is short, just as real papers need. Every question has a short explanation, so a wrong answer becomes a quick lesson. It is the fastest way to fix gaps before a test.
Use this chapter for focused revision. Start with the Easy set to check your basics on Coal and Petroleum, then move to Medium and Hard to practise applying them. Your accuracy, streaks and XP save automatically. This chapter also adds to your overall Class 8 Science mastery score. Try the 6 sample questions below: tap an option to see the answer and a worked explanation. Sign in free to start practising.
Coal and Petroleum — important questions & MCQs with answers (Class 8 Science)
6 solved questions from this chapter's difficulty levels, each with its answer and explanation. Tap an option to check yourself.
0 of 6 answered
- Q1 of 6Easy
Which of these is an exhaustible natural resource?
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Answer: Coal
Explanation: Coal is exhaustible — it will run out. Sunlight, air and wind are inexhaustible.
- Q2 of 6Easy
The slow conversion of dead vegetation into coal is called:
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Answer: Carbonisation
Explanation: Carbonisation is the slow process by which buried dead vegetation becomes coal under heat and pressure.
- Q3 of 6Medium
During the refining of petroleum, the different fractions separate because they have different:
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Answer: Boiling points
Explanation: Fractional distillation separates components by their different boiling points.
- Q4 of 6Medium
Why is CNG considered a cleaner fuel than petrol or diesel?
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Answer: It burns more completely, producing fewer harmful pollutants
Explanation: CNG burns more completely than petrol/diesel, releasing fewer pollutants and less smoke.
- Q5 of 6Hard
Assertion (A): Coal and petroleum should be conserved. Reason (R): They take millions of years to form and cannot be replaced in our lifetime. Choose the correct option.
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Answer: Both A and R are true and R explains A
Explanation: We conserve them precisely because they cannot be replaced quickly — R explains A.
- Q6 of 6Hard
Why can't coal, petroleum and natural gas reserves keep up with demand?
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Answer: They formed over millions of years and are being used far faster than they form
Explanation: Reserves built over millions of years are being consumed in centuries, so they cannot keep up.
Coal and Petroleum notes: key concepts (Class 8 Science)
This chapter covers natural resources, especially the fossil fuels coal and petroleum, how they form, and the need to conserve them.
- Types of resources
- Inexhaustible (e.g. sunlight, air) and exhaustible (e.g. coal, petroleum, minerals) natural resources.
- Coal
- Formed from buried plants under heat and pressure over millions of years (carbonisation); products include coke, coal tar and coal gas.
- Petroleum
- Formed from buried marine organisms; refined by fractional distillation into petrol, diesel, kerosene, LPG, etc.
- Natural gas
- A clean fuel (CNG) stored under pressure; less polluting than coal or petrol.
- Conservation
- Fossil fuels are exhaustible and non-renewable, so they must be used wisely (e.g. India's 'Save Fuel' tips).
Start this chapter free
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This chapter has 72 questions (24 Easy · 24 Medium · 24 Hard), with timed scoring and instant feedback. The rest unlock with the ₹999/year plan.
Start with the questions above. The full quiz opens here after.
Coal and Petroleum — FAQs
What are the key concepts in Class 8 Science Coal and Petroleum?+
This chapter covers natural resources, especially the fossil fuels coal and petroleum, how they form, and the need to conserve them. Key ideas include Types of resources, Coal, Petroleum, Natural gas, Conservation.
What does Class 8 Science Chapter 103 (Coal and Petroleum) cover on XamBaaz?+
It has 72 NCERT-based MCQs on "Coal and Petroleum": 24 Easy, 24 Medium and 24 Hard. Together they make 6 timed quizzes, and you never get the same set twice. Every question has an instant explanation. They help you prepare for CBSE Board exams.
Are these "Coal and Petroleum" questions free to practise?+
Yes. Sign in with Google to practise "Coal and Petroleum" free. Full unlimited access is ₹999/year. One year from the day you pay. You stay in Class 8 till 31 March; on 1 April your account moves up to Class 9 and the rest of your year carries over. No chapter is charged separately.
How should I revise "Coal and Petroleum" for the exam?+
Start with the Easy quiz to check your basics, then try Medium and Hard to practise applying them. There are 6 timed quizzes on this chapter, so you can come back for a fresh set instead of one you have seen. Read each explanation, retry the questions you miss, and track your accuracy until it stays high.
Are these "Coal and Petroleum" MCQs available with answers?+
Yes. 6 sample questions are on this page with answers: tap an option, or "Show answer", to see the correct option and a step-by-step explanation. Sign in free with Google to start practising, with instant scoring.
Is there negative marking in the "Coal and Petroleum" quizzes?+
Yes. The timed quizzes use exam-style marking: +4 for a right answer, −1 for a wrong one and 0 for a skip. MHT-CET and CBSE board papers have no negative marking. Our mocks for those are scored their way.
What are the important questions from Coal and Petroleum (Class 8 Science)?+
The questions that matter most test Types of resources, Coal, Petroleum, Natural gas, Conservation. This page shows 6 solved important MCQs with answers and explanations. Sign in to practise all 72 questions on the chapter as timed quizzes.
Is there an online quiz for Coal and Petroleum?+
Yes — Class 8 Science Coal and Petroleum has timed online quizzes at Easy, Medium and Hard levels, with instant scoring and a worked explanation on every question. The first quiz on the chapter is free.
Are there question answers and extra questions for Coal and Petroleum (Class 8 Science)?+
Yes. This page has 6 solved questions on Coal and Petroleum, each with the correct answer and a short explanation. Sign in to practise all 72 questions on the chapter as timed quizzes.