Given below are two statements. In the light of the above statements, choose the correct answer from the options given below.
Statement I:Volatile Organic Compounds (VOCs) are emitted from vehicles.
Statement II:Volatile Organic Compounds are emitted from some trees.
ABoth Statement I and Statement II are true ✓ Correct
BBoth Statement I and Statement II are false
CStatement I is true but Statement II is false
DStatement I is false but Statement II is true
Correct answer: (A) Both Statement I and Statement II are true
Explanation
Both statements hold true, since volatile organic compounds arise from both human and natural sources.
Statement 1 is correct, as vehicle exhaust releases VOCs from unburnt and evaporating fuel.
Statement 2 is correct, as many trees emit isoprene and terpenes, which are biogenic VOCs.
These biogenic emissions can be large during warm, sunny weather.
In sunlight VOCs react with oxides of nitrogen to form ground-level ozone.
This links both traffic and vegetation to photochemical smog formation.
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