MEDIUM
8th CBSE
IMPORTANT
Earn 100

The slow process of conversion of dead vegetation into coal is called .

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Important Questions on Coal and Petroleum

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 5 - Coal and Petroleum>Very Short Answer Type Questions>Q 23
The process of separation of different constituents from petroleum is called _____.(filtration/refining/concentration)
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 5 - Coal and Petroleum>Very Short Answer Type Questions>Q 23
The least polluting fuel for vehicles is _____.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 5 - Coal and Petroleum>Short Answer Type Questions>Q 24
Explain why fossil fuels are exhaustible natural resources.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 5 - Coal and Petroleum>Short Answer Type Questions>Q 25
Describe how coal was formed? What is this process called?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 5 - Coal and Petroleum>Short Answer Type Questions>Q 26
What happens when coal is heated in the air? State the uses of coal.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 5 - Coal and Petroleum>Short Answer Type Questions>Q 27
State the uses of coke.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 5 - Coal and Petroleum>Short Answer Type Questions>Q 28
What are the constituents of coal gas? State one use of coal gas.
HARD
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 5 - Coal and Petroleum>Short Answer Type Questions>Q 29
What are the major products (or fractions) of petroleum refining? Give one use of each petroleum product.