Class 8 Science — Chapter 3: Coal and Petroleum
72 practice questions · 24 Easy · 24 Medium · 24 Hard
Practise Class 8 Science Chapter 3, "Coal and Petroleum", with 72 NCERT-aligned multiple-choice questions. The set is split into 24 Easy, 24 Medium and 24 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams.
"Coal and Petroleum" is one of the chapters where concept clarity across physics, chemistry and biology basics really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Coal and Petroleum, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 8 Science mastery score. A few sample questions are shown below; sign in free to practise all 72.
Key concepts: Coal and Petroleum (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).
💡 Exam tips for Coal and Petroleum
- Coal and petroleum are fossil fuels — exhaustible and non-renewable, formed over millions of years.
- Petroleum is separated into useful fractions by fractional distillation in a refinery.
Sample questions
Coal, petroleum and natural gas are together called:
They are fossil fuels — formed from the remains of dead organisms over millions of years.
Why is CNG considered a cleaner fuel than petrol or diesel?
CNG burns more completely than petrol/diesel, releasing fewer pollutants and less smoke.
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.
We conserve them precisely because they cannot be replaced quickly — R explains A.
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 3 (Coal and Petroleum) cover on XamBaaz?+
It covers 72 NCERT-aligned MCQs on "Coal and Petroleum" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable 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 (limited-time launch price), with no per-chapter charges.
How should I revise "Coal and Petroleum" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
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