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Statement-1 $Z n O$ becomes yellow on heating

Statement-2 $N a C l$ turns yellow when heated in presence of $N a$ vapour due to f-centre

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Statement-1 is true, statement-2 is true , statement-2 is correct explanation of statement-1

Statement-1 is true, statement-2 is true , statement-2 is not correct explanation of statement-1

Statement-1 is true, statement-2 is false

Statement-1 is false, statement-2 is false

answer is B.

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Detailed Solution

$Z n O$ becomes yellow due to extra cation in interstitial gap by escaping of oxyge ngas. $N a C l$ turns yellow when heated in presence of $N a$ vapour due to f-centre

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