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Topic: Types of organic reactions· Some Basic Principles of Organic Chemistry

Match List - I with List - II.List - I : (a) 2SO_2(g) + O_2(g) → 2SO_3(g) (b) HOCl(g) h OH + Cl (c) CaCO_3 + H_2SO_4 → CaSO_4 + H_2O + CO_2 (d) NO_2(g) h NO(g) + O(g)List - II : (i) Acid rain (ii) Smog (iii) Ozone depletion (iv) Tropospheric pollutio…

Match List - I with List - II.

List - I : (a) \(2SO_2(g) + O_2(g) \rightarrow 2SO_3(g)\) (b) \(HOCl(g) \xrightarrow{h\nu} \dot{O}H + \dot{C}l\) (c) \(CaCO_3 + H_2SO_4 \rightarrow CaSO_4 + H_2O + CO_2\) (d) \(NO_2(g) \xrightarrow{h\nu} NO(g) + O(g)\)

List - II : (i) Acid rain (ii) Smog (iii) Ozone depletion (iv) Tropospheric pollution

Choose the correct answer from the options given below.

1. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

2. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

3. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

4. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)

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Answer: 3. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

Key idea: identify each reaction with its environmental context.

  • (a) \(\mathrm{SO_2}\) oxidised to \(\mathrm{SO_3}\) in the troposphere: tropospheric pollution (iv)
  • (b) HOCl photolysis releasing Cl radicals: ozone depletion (iii)
  • (c) \(\mathrm{CaCO_3}\) attacked by \(\mathrm{H_2SO_4}\) (acid rain damage to marble): acid rain (i)
  • (d) \(\mathrm{NO_2}\) photolysis giving O atoms: photochemical smog (ii)

So (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii), which is option 3.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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