Which of the following metal evolves hydrogen on reacting with cold dilute HNO3?
Which of the following metal evolves hydrogen on reacting with cold dilute HNO3?
(a) Mg
(b) Al
(c) Fe
(d) Cu
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The correct option is: (a) Mg
Explanation:
Mg reacts with nitric acid to give Mg(NO3)2 and evolves H2
Mg + 2HNO3 → Mg(NO3)2 + H2
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