Question

photochemical smog consists of
a-SO2,pan,and smoke
b-ozone, pan and no2
c-ozone so2 and hydrocarbon
d-so2 co2 and hydrocarbon

Answer 1

Option B is correct

The chemicals in photochemical smog include nitrogen oxides, Volatile Organic Compounds (VOCs), ozone, and PAN (peroxyacytyl nitrate)

Answer 2

Photo chemical smog consists of ozone, PAN (peroxyacytyl nitrate), $\mathrm{NO}_{2}$ (nitrogen oxides), and volatile organic compounds.

Explanation:

• Smog comprises of a mix of smoke and fog. When the photons present in sunlight combines with atmospheric pollutant molecules, photo chemical smog is formed due to harmful chemical reactions.

• Photo chemical smog is caused mainly due to anthropological activities. The $\mathrm{NO}_{2}$ gas is released from vehicular emissions. The VOCs are released from pesticide, gasoline, and paint industries.

• PAN is formed by various chemical reactions between the pollutants and the $\mathrm{NO}_{2}$ gas and VOCs. Photo chemical smog is highly dangerous to living organisms which can cause irreversible harmful damage to various organs like the respiratory system reducing the lung function and capacity and thereby affects breathing. It also affects the eyes and heart.