Gas liberated when zinc is treated with concentrated nitric acid is :

nitrous oxide

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nitric oxide

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nitrogen dioxide

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nitrogen

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Solution

The correct option is C nitrogen dioxide
Zinc reacts with concentrated nitric acid to form zinc nitrate, nitrogen dioxide and water.
$Z n + 4 H N O_{3} (C o n c) \to Z n (N O_{3})_{2} + 2 N O_{2} + 2 H_{2} O$

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Which gas is liberated when zinc reacts with dilute nitric acid?

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