# Choose the Correct Option from Given Below: Incomplete Combustion of Coal and Petroleum : (A) Increases Air Pollution. (B) Increases the Efficiency of Machines. (C) Reduces Global Warming. (D) Produce - Science

#### Question

MCQ

Choose the correct option from given alternative:
Incomplete combustion of coal and petroleum :
(A) increases air pollution.
(B) increases the efficiency of machines.
(C) reduces global warming.
(D) produce poisonous gases.

• (A) and (B)

• (A) and (D)

• (B) and (C)

• (C) and (D)

#### Solution

Incomplete combustion of coal and petroleum increases air pollution and produce poisonous gases.

Hence, the correct answer is option (A) and (D).

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