Soot particles: Choose the correct answer from the options given below:

1.Are also called black carbon

2.Are mostly of coarse size range

3.Are toxic

4.Contribute to global warming

5.Can penetrate into deeper parts of the lungs

A1, 2, 3, 4 only

B1, 2, 3, 5 only

C1, 3, 4, 5 only ✓ Correct

D2, 3, 4, 5 only

Correct answer: (C) 1, 3, 4, 5 only

Explanation

Soot particles are also called black carbon, are toxic, contribute to global warming, and can reach deep into the lungs.

Statement 1 is right because soot is the black carbon produced by incomplete combustion.

Statement 3 is right since soot carries harmful compounds that damage health.

Statement 4 is right because black carbon absorbs sunlight and warms the atmosphere.

Statement 5 is right as these tiny particles pass deep into the lower airways.

Statement 2 is wrong because soot is made of very fine particles, not coarse ones.

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