The full form of PAN, a type of air pollutant, is:

APolycyclic Aromatic Nitrate

BPolycyclic Acetyl Nitrate

CPeroxy Aromatic Nitrate

DPeroxyacetyl Nitrate ✓ Correct

Correct answer: (D) Peroxyacetyl Nitrate

Explanation

PAN stands for Peroxyacetyl Nitrate, a secondary pollutant formed in photochemical smog.

It arises when hydrocarbons react with nitrogen oxides in the presence of sunlight.

Polycyclic Aromatic Nitrate is not a recognised name for this compound.

Polycyclic Acetyl Nitrate wrongly mixes ring hydrocarbon terms with the acetyl group.

Peroxy Aromatic Nitrate replaces the correct acetyl part with an aromatic label.

PAN is a powerful eye irritant and damages plant leaves even at low concentrations.

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