Which of the following are released significantly during the combustion of coal? Choose the correct answer from the options given below.

1.Soot

2.Sulphate

3.Nitrate

4.Fly ash

5.Ammonia

A1, 2 and 3 only

B1, 2 and 4 only ✓ Correct

C3, 4 and 5 only

D1, 2 and 5 only

Correct answer: (B) 1, 2 and 4 only

Explanation

The major products significantly released during coal combustion are soot, sulphate and fly ash.

Statement 1 soot is the fine carbon particulate produced by burning coal.

Statement 2 sulphate arises from the sulphur in coal oxidising during combustion.

Statement 4 fly ash is the fine non-combustible residue carried off with the flue gases.

Nitrate is not the characteristic bulk product of coal burning treated here.

Ammonia is not significantly released by coal combustion and stays out of this set.

These emissions make coal a leading source of particulate and sulphur pollution.

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