MEDIUM
8th CBSE
IMPORTANT
Earn 100

Differentiate between luminous and non-luminous flame.

Important Questions on Combustion and Fossil Fuels

MEDIUM
8th CBSE
IMPORTANT
What is fuel? Give two examples each of solid, liquid and gaseous fuels.
MEDIUM
8th CBSE
IMPORTANT
Why are methane and LPG considered ideal for use as domestic fuels?
MEDIUM
8th CBSE
IMPORTANT
Write any two ways in which we can conserve fossil fuels.
MEDIUM
8th CBSE
IMPORTANT
Differentiate between exhaustible and inexhaustible natural resources. Give two examples of each.
MEDIUM
8th CBSE
IMPORTANT
Explain the different zones of a candle flame.
MEDIUM
8th CBSE
IMPORTANT
What is a calorific value of a fuel? Write any four characteristics of an ideal fuel.
MEDIUM
8th CBSE
IMPORTANT
What are fossil fuels? How were coal and petroleum formed?
MEDIUM
8th CBSE
IMPORTANT
What are the products obtained on refining petroleum? Write their main uses.