$¯ ¯¯¯ ¯ X$ reacts with dilute nitric acid to form 'laughing gas'. What is $¯ ¯¯¯ ¯ X$ ?

C u

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P_{4}

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S_{8}

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Z n

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Solution

The correct option is C $Z n$
Laughing gas is $N_{2} O$ (Nitrous oxide).
Zinc on reacting with dilute nitric acid forms $N_{2} O$ .
$4 Z n + 10 H N O_{3}      (d i l) ⟶ 4 Z n (N O_{3})_{2} + 5 H_{2} O + N_{2} O$

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