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Assertion (A): $N a C l$ Reacts with concentrated $H_{2} S O_{4}$ to give colorless fumes with a pungent smell. But on adding $M n O_{2}$ The fumes become greenish yellow.
Reason (R): $M n O_{2}$ oxidizes $H C l$ to $C l_{2}$ Which is a greenish yellow gas.

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A and R are true and R is explaining A

A and R are true and R is not explaining A

A is false R is true

A is true and R is false

answer is A.

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Detailed Solution

$N a C l$ reacts with conc. $H_{2} S O_{4}$ to give colourless fumes of $H C l$ which on treatment with $M n O_{2}$ get oxidized to yellowish green coloured $C l_{2}$ gas.

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