MEDIUM
8th CBSE
IMPORTANT
Earn 100

Why is topsoil considered a non-renewable resource even though it is constantly being formed by weathering of rocks? 

Important Questions on Coal and Petroleum

HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q D

Why do we feel the need for conservation more today than our ancestors did? 

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q D
How was coal formed?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q D
What are the important uses of coke? 
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q D

How was petroleum formed? 

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q D
Name four important products of petroleum and give their uses. 
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q D
What are the advantages of using energy judiciously?
HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q E
How is the destructive distillation of coal carried out? What are the products obtained and their main uses?
HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 5 - Coal and Petroleum>EXERCISES>Q E
How is the refining of petroleum carried out? Name the important products obtained.