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NEET UG CHEMISTRY MCQ: P-BLOCK ELEMENTS

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Analyzing +4 | -1
On heating with NaOH\mathrm{NaOH} solution and zinc, NaNO3\mathrm{NaNO}_3 liberates a gas which can also be obtained by:
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Correct option: B
Heating NH4NO2\mathrm{NH}_4 \mathrm{NO}_2 with sodium hydroxide solution
Option B (Heating NH4NO2\mathrm{NH}_4 \mathrm{NO}_2 with sodium hydroxide solution) is correct because the gas liberated is ammonia (NH3NH_3), which can be produced by reducing NaNO3NaNO_3 with Zn and NaOH, or by heating NH4NO2NH_4NO_2 with NaOH.

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