Aqueous solution of $N a_{2} S O_{3}$ on reaction with $C l_{2}$ gives:

N a_{2} S_{4} O_{6}

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N a H S O_{4}

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N a O H

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N a_{2} S O_{4}

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Solution

The correct option is D $N a_{2} S O_{4}$
$N a_{2} S O_{3}$ gets oxidised by $C l_{2}$ . The reaction takes place as:
$N a_{2} S O_{3} + C l_{2} + H_{2} O \to N a_{2} S O_{4} + 2 H C l$
Hence, option (d) is the correct answer.

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