Which of the following Volatile Organic Compounds are emitted from anthropogenic sources only? Choose the correct answer from the options given below:

1.Isoprene

2.Benzene

3.Terpene

4.Methane

5.Toluene

A1, 2 and 3

B2 and 5 ✓ Correct

C1 and 3

D3, 4 and 5

Correct answer: (B) 2 and 5

Explanation

Among these volatile organic compounds only benzene and toluene come solely from human made, anthropogenic sources.

Statement 2 is right because benzene is released chiefly from fuels, solvents and vehicle exhaust.

Statement 5 is right since toluene is an industrial solvent and fuel additive of human origin.

Statement 1 is wrong because isoprene is emitted naturally in large amounts by vegetation.

Statement 3 is wrong as terpenes are given off by plants and trees, a biogenic source.

Statement 4 is wrong because methane comes from both natural wetlands and human activities.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.