When lead nitrate is heated, a reddish-brown coloured gas is liberated. Name the gas.

Nitrous oxide

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Nitrogen pentoxide

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Nitric oxide

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Nitrogen dioxide

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Solution

The correct option is D Nitrogen dioxide
When lead nitrate is heated, it breaks into lead monoxide, nitrogen dioxide (a reddish-brown gas), and oxygen.
2Pb $(N O_{3})_{2} \to 2 P b O + 4 N O_{2} + O_{2}$

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