Question

Fill in the blanks.
(a) Fossil fuels are
____,______ and _______
(b) Process of separation of different constituents from petroleum is
called _____
(c) Least polluting fuel for vehicle is_____​

Answer 1

Answer:

a) coal,petroleum and natural gases

b)refining

c) compressed natural gas (CNG)

Answer 2

(a) coal, petroleum and natural gas.

(b) refining.

(c) Compressed Natural Gas(CNG).