MEDIUM
8th CBSE
IMPORTANT
Earn 100

Explain the relationship between greenhouse effect and global warming. 

Important Questions on Coal and Petroleum

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.
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 2
Name the fuel which is being used in your vehicle at home.
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>Q 3
What is the need to save fuel? 
HARD
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 6 - Coal and Petroleum>EXERCISE>SUBJECT CONNECT
Where is the largest coal belt present in India? Which variety of coal is mostly found there?