CBSE
Gujarat Board
Haryana Board
Class 10
Class 12
The natural solid fuel is
coal
coke
LPG
charcoal
A.
The purest form of carbon is
coal tar
coal gas
none of the above
C.
An exhaustible natural resource is
water
air
sun light
D.
The product obtained by destructive disillation of coal is
all of the above
The least polluted fuel is
petrol
kerosene oil
CNG