1.
....................... is renewable source of energy.
2.
Which of the following is not a fossil fuel ?
3.
_______________ contains 98% of carbon.
4.
Which of the following are the green house gas.
5.
Coal mines in our country are in :
6.
The slurry residue after obtaining biogas is used as
7.
Coke is Starting material for the preparation of
8.
Which one is called black gold?
10.
The main constituent of natural gas is :
