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A pair of compounds that can be used to generate a gas wh...

A pair of compounds that can be used to generate a gas which has physiological effect on human beings is

A.

sodium trioxonitrate (V) and calcium chloride

B.

sodium dioxonitrate (III) and ammonium chloride

C.

sodium trioxonitrate (V) and ammonium chloride

D.

sodium dioxonitrate (III) and potassium chloride

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Correct answer is C

The reaction between NaNO $_3$ and NH $_4$ Cl gives NaCl and NH $_4$ NO $_3$ .

Upon heating, NH $_4$ NO $_3$ yields 2 moles of H $_2$ O and N $_2$ O.

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