Question

Smog is the consequence of ______.

Options

• rapid build up of CO₂ in atmosphere

• depletion of ozone layer

• presence of high humidity in atmosphere

• rapid build up of photochemical oxidants, pollutants and thermal inversion

Answer 1

Smog is the consequence of rapid build up of photochemical oxidants, pollutants and thermal inversion.

Explanation:

Smog forms due to the accumulation of photochemical oxidants like ozone, nitrogen oxides, hydrocarbons, and other pollutants emitted mainly from motor vehicles. When these substances react under sunlight, they create a thick, harmful haze. Thermal inversion (a temperature inversion layer in the atmosphere) traps pollutants near the ground, worsening smog conditions and reducing air quality.