HARD
8th CBSE
IMPORTANT
Earn 100

Explain how the process of destructive distillation of coal results in the formation of coal tar.

Important Questions on Coal and Petroleum

MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 4
What are the uses of coal?
HARD
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 5
How is petroleum formed? Explain.
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?