Question

6.
Incomplete combustion of coal and petroleum :
(A) increases air pollution.
(B) increases efficiency of
machines.
(C) reduces global warming.
(D) produce poisonous gases.
The correct option is :
(a) (A) and (B)
bx (A) and (D)
(c) (B) and (C)
d) (C) and (D)​

Answer 1

Resposta:

increase air pollution

reduce global warming

product poisonous gases

increase efficiency of machines

I think it will be helpful for you thank you

Answer 2

An incomplete combustion of coal and petroleum INCREASES AIR POLLUTION and PRODUCE POISONOUS GASES.

The correct optoon is: (b) A and D