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AP EAMCET202123 Aug 2021Evening ShiftChemistryEnvironmental ChemistryActual

The secondary precursors of photochemical smog are

Options

  1. ASO ₂ and NO ₂
  2. BNO ₂ and hydrocarbons
  3. CNO ₂ and PAN
  4. DO ₃ and PAN

Correct answer

D. O ₃ and PAN

Step-by-step solution

The primary precursors of photochemical smog are NO ₂ and hydrocarbons. The secondary precursors are ozone and PAN (peroxyacyl nitrates).

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