When zinc is treated with dilute nitric acid, the gas formed is ______.

N_{2} O_{2}

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N_{2} O

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N O_{2}

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Solution

The correct option is B $N_{2} O$
The products released depend on the concentration of nitric acid. In case of zinc metal, diluted nitric acid treatment release nitrous oxide and concentrated nitric acid causes the release of nitrogen dioxide.
$4 Z n + 10 H N O_{3} (d i l .) \to 4 Z n (N O_{3})_{2} + N_{2} O + 5 H_{2} O Z n + 4 H N O_{3} (c o n c .) \to Z n (N O_{3})_{2} + 2 N O_{2} + 2 H_{2} O$

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