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NEET levelSingle correct optionDifficulty 1 of 3sb024

Which gas is liberated when calcium hydride reacts with water?

A $O X_{2}$
B $NH X_{3}$
C $H X_{2}$
D $CO X_{2}$

Answer: C

CaH X_{2} + 2 H X_{2} O Ca (OH) X_{2} + 2 H X_{2}

. The hydride ion removes a proton from water, so hydrogen is evolved.

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