Question

Match the following

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

Hint:

Remember key ores: ZnS → Sphalerite, CuCO$_3\cdot$Cu(OH)$_2$ → Malachite, Na$_3$AlF$_6$ → Cryolite.

Answer 1

The Correct Option is D

Concept: This question is based on common ores and their chemical compositions. It is important to memorize standard mineral names and their corresponding chemical formulas.

Step 1: Identify each mineral one by one.
• Sphalerite: This is the chief ore of zinc and has the chemical formula: \[ \text{ZnS} \] So, \[ (a) \rightarrow (v) \]
• Malachite: This is a copper ore with characteristic green color and formula: \[ \text{CuCO}_3 \cdot \text{Cu(OH)}_2 \] So, \[ (b) \rightarrow (iv) \]
• Calamine: This is a zinc carbonate ore: \[ \text{ZnCO}_3 \] So, \[ (c) \rightarrow (ii) \]
• Cryolite: This is sodium aluminium fluoride: \[ \text{Na}_3\text{AlF}_6 \] So, \[ (d) \rightarrow (iii) \]
• Siderite: This is iron carbonate: \[ \text{FeCO}_3 \] So, \[ (e) \rightarrow (i) \]

Step 2: Write final matching. \[ (a)-(v),\quad (b)-(iv),\quad (c)-(ii),\quad (d)-(iii),\quad (e)-(i) \]

Step 3: Match with given options.
This corresponds to option (D).

Step 4: Final answer. \[ \boxed{(D)} \]