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State PCS PYQPrelims 2022

UPPCS · Question 72

Photochemical smog always contains:

  1. Ozone
  2. Aluminium ion
  3. Phosphorus
  4. Methane
Show answer & explanation

Answer: (A) Ozone

Explanation

Photochemical smog forms when NOx and VOCs react in sunlight, producing ozone and PAN.