Question

Match List-I with List – II :

	List-I (Oxoacids of Sulphur)		List-II (Bonds)
A	Peroxodisulphuric acid	I	Two S–OH, Four S=O, One S–O–S
B	Sulphuric acid	II	Two S–OH, One S=O
C	Pyrosulphuric acid	III	Two S–OH, Four S=O, One S–O–O–S
D	Sulphurous acid	IV	Two S–OH, Two S=O

Choose the correct answer from the options given below.

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

Answer 1

The Correct Option is A

The task is to match oxoacids of sulphur in List-I with their corresponding bond structures in List-II. We will analyze each oxoacid and bond description to find matches. 

	List-I (Oxoacids of Sulphur)		List-II (Bonds)
A	Peroxodisulphuric acid	I	Two S–OH, Four S=O, One S–O–S
B	Sulphuric acid	II	Two S–OH, One S=O
C	Pyrosulphuric acid	III	Two S–OH, Four S=O, One S–O–O–S
D	Sulphurous acid	IV	Two S–OH, Two S=O

Let's match them:

• Peroxodisulphuric acid (A): This acid has two S–OH groups, four S=O bonds, and one S–O–O–S linkage. This matches description III.
• Sulphuric acid (B): This well-known strong acid is characterized by two S–OH groups and two S=O bonds, matching description IV.
• Pyrosulphuric acid (C): Also known as oleum, it has two S–OH groups, four S=O bonds, and one S–O–S linkage, consistent with description I.
• Sulphurous acid (D): Contains two S–OH groups and one S=O bond, corresponding to description II.

Therefore, the correct option is:

• A–III, B–IV, C–I, D–II

Answer 2

A. Peroxodisulfuric acid - Two S–OH, Four S=O, One S–O–S 
B. Sulphuric acid - Two S–OH, One S=O 
C. Pyrosulphuric acid - Two S–OH, Four S=O, One S–O–O–S 
D. Sulphurous acid - Two S–OH, Two S=O

Therefore, The correct option is (A): A–III, B–IV, C–I, D–II