Question

Match List-I with List-II.

	List - I (Ores)		List - II (Composition)
(a)	Haematite	(i)	Fe3O3
(b)	Magnetite	(ii)	ZnCO3
(c)	Calamine	(iii)	Fe2O3
(d)	Kaolinite	(iv)	[Al2(OH)4Si2O5]

Choose the correct answer from the options given below:

• A. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
• B. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
• C. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
• D. (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Metals are extracted from naturally occurring minerals called ores.
Knowledge of the chemical formulas of common ores is essential in metallurgy.
Detailed Explanation:
(a) Haematite: An oxide ore of Iron.
Formula: $Fe_{2}O_{3}$.
Matching: (a) $\rightarrow$ (iii).
(b) Magnetite: A magnetic oxide ore of Iron (Mixed oxide).
Formula: $Fe_{3}O_{4}$.
Matching: (b) $\rightarrow$ (i).
(c) Calamine: A carbonate ore of Zinc.
Formula: $ZnCO_{3}$.
Matching: (c) $\rightarrow$ (ii).
(d) Kaolinite: A clay mineral (aluminium silicate).
Formula: $[Al_{2}(OH)_{4}Si_{2}O_{5}]$.
Matching: (d) $\rightarrow$ (iv).
Step 2: Final Answer:
The sequence (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv) corresponds to option (2).