MEDIUM
8th CBSE
IMPORTANT
Earn 100

If a resource can be replaced within ten years by natural processes, would you classify it as renewable or non-renewable?

Important Questions on Coal and Petroleum

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>ORAL QUESTIONS>Q 3
The amount of groundwater will always remain the same. Do you agree? Give reasons.
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q A
In the destructive distillation, coal is heated strongly to about
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q 2
All renewable resources are inexhaustible. Do you agree? Give reasons.
HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q 3
All combustible substances are not fuels. Why?
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q 4
Can fossil fuels be made in the laboratory?
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q 5
Conservation of resources means avoiding their wasteful use. Does this definition cover all aspects of conservation? Explain.
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q 6
In a petroleum well, crude oil is found above water. Which two properties of petroleum make it possible to form a layer of it above water?
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>VALUES
Salma always switches off electrical appliances such as lights, fans, air conditioners, heaters, etc. When not in use. She says it saves coal and petroleum and helps the environment. Do you agree? Explain.