| 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 $S=O$ |
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