The gas oxygen from thermal decomposition of $(N H_{4})_{2} C r_{2} O_{7}$ :

Oxygen

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Nitric oxide

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Ammonia

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Nitrogen

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Solution

The correct option is D Nitrogen
$(N H_{4})_{2} C r_{2} O_{7} Δ ⟶ C r_{2} O_{3} + N_{2} + 4 H_{2} O$

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{(N H_{4})}_{2} {C r}_{2} O_{7}

Identify the type of reaction and product(s) formed when hydrogen peroxide $H_{2} O_{2}$ is heated.

Hydrogen chloride gas on thermal decomposition gives:

N_{2}

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