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Topic: Transition elements: configuration, occurrence and characteristics· d- and f-Block Elements

Match List - I with List - II.List - I (Ores): (a) Haematite (b) Magnetite (c) Calamine (d) KaoliniteList - II (Composition): (i) Fe_3O_4 (ii) ZnCO_3 (iii) Fe_2O_3 (iv) [Al_2(OH)_4Si_2O_5]Choose the correct answer from the options given below :

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

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

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

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

1 answer

Best answer

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

Key idea: recall ore compositions.

  • Haematite: \(\mathrm{Fe_2O_3}\) (iii)
  • Magnetite: \(\mathrm{Fe_3O_4}\) (i)
  • Calamine: \(\mathrm{ZnCO_3}\) (ii)
  • Kaolinite: \(\mathrm{[Al_2(OH)_4Si_2O_5]}\) (iv)

Option 3.

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