Which of the following acids will evolve H2 gas on reaction with alkali metals?
A
Hydrazoic acid
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B
Xenic acid
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C
Boric acid
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D
Hydrochloric acid
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Solution
The correct option is D Hydrochloric acid Alkali metals react with strong acids (HCl,H2SO4,HNO3) to give their corresponding salts and evolve hydrogen gas.