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Generally metals react with acids to giv...

Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?

A

`H_(2)SO_(4)`

B

HCl

C

`HNO_(3)`

D

All of these.

Text Solution

Verified by Experts

The correct Answer is:
C
`HNO_(3)` is a strong oxidising agent. It oxidises metals to metal and then to metal nitrates and itself is reduced to either nitric oxide (NO), nitruos oxide `(N_(2)O)` or nitrogen dioxide `(NO_(2))`. However, both Mg and Mn evolve hydrogen on reacting with the acid.
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