1.
The main constituent of natural gas is :
2.
Which of the following are the green house gas.
3.
Coke is Starting material for the preparation of
4.
Which of the following is not a fossil fuel ?
5.
_______________ contains 98% of carbon.
6.
The slurry residue after obtaining biogas is used as
8.
....................... is renewable source of energy.
9.
Coal mines in our country are in :
10.
Which one is called black gold?
