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Match List-I (Oxoacids of Sulphur) with List-II (Bonds of Sulphur):
Column I
- A. Peroxodisulphuric acid
- B. Sulphuric acid
- C. Pyrosulphuric acid
- D. Sulphurous acid
Column II
- I. Two S-OH, Four S=O, One S-O-S
- II. Two S-OH, One S=O
- III. Two S-OH, Four S=O, One S-O-O-S
- IV. Two S-OH, Two S=O
Correct answer: A → III, B → IV, C → I, D → II
Explanation
Peroxodisulphuric acid has an S–O–O–S link; pyrosulphuric acid has an S–O–S link.
Detailed Solution
$H_2S_2O_8$, peroxodisulphuric acid: Two S-OH, Four S=O, One S-O-O-S
$H_2SO_3$, sulphurous acid: Two S-OH, One S=O bond
$H_2S_2O_7$, pyrosulphuric acid: Two S-OH, Four S=O, One S-O-S bond
$H_2SO_4$, sulphuric acid: Two S-OH, Two S=O