HARD
8th CBSE
IMPORTANT
Earn 100

How is petroleum formed? Explain.

Important Questions on Coal and Petroleum

HARD
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 6
Briefly explain how petroleum is refined by the process of fractional distillation. 
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 7
How is natural gas formed?
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 8
How can conservation of energy be done?
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 9
Explain the relationship between greenhouse effect and global warming. 
HARD
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 1
When plants and animals die, their decomposed bodies add richness (humus) to the soil. Why do these dead plants and animals form humus and not fossil fuels?
HARD
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 2
Is there any way to make any fossil fuel through some chemical processes in a laboratory? 
HARD
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>FUN ACTIVITIES

Choose the correct word for each fossil fuel and write in the space provided.

Fractional distillation, Black rock, Black gold, Petroleum, Fossil gas, Destructive distillation, CNG

Question Image

Coal Natural gas Crude oil
     
     
     

 

MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 1
Discuss various ways of saving fuel.