Question

Match List-I with List-II
 

	List-I Ore		List-II Composition
A.	Siderite	I.	FeCO3
B.	Malachite	II.	CuCO3. Cu(OH)2
C.	Sphalerite	III.	ZnS
D.	Calamine	IV.	ZnCO3

Choose the correct answer from the options given below:

• A. A-I, B-II, C-III, D-IV
• B. A-III, B-IV, C-II, D-I
• C. A-IV, B-III, C-I, D-II
• D. A-I, B-II, C-IV, D-III

Answer 1

The Correct Option is A

To correctly match the list of ores with their respective compositions, we need to understand the chemical composition of each ore provided in List-I and select the matching composition from List-II.

1. Siderite: Siderite is an iron carbonate mineral with the chemical formula FeCO_3. Thus, it matches with I: FeCO₃.
2. Malachite: Malachite is a copper carbonate hydroxide mineral with the composition CuCO_3 \cdot Cu(OH)_2. This corresponds to II: CuCO₃ · Cu(OH)₂.
3. Sphalerite: Sphalerite is the major ore of zinc and is a sulphide mineral with the formula ZnS. It matches with III: ZnS.
4. Calamine: Historically, calamine referred to both the zinc carbonate mineral ZnCO_3. Thus, it corresponds to IV: ZnCO₃.

Based on the chemical compositions described above, the correct matching option is:

A-I, B-II, C-III, D-IV

This reasoning confirms that each ore is correctly matched with its chemical composition, thus justifying the correct answer choice given.