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Question

Which of these metals displace hydrogen from dilute acids with explosive violence?


A

Potassium

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B

Nickel

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C

Iron

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D

Sodium

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Solution

The correct options are
A

Potassium


D

Sodium


Hydrogen is displaced from dilute sulphuric acid H2SO4 and hydrochloric acid HCl when it reacts with metals which are more reactive than hydrogen. Few metals like K, Na and Ca reacts vigorously and explosively with hydrogen.


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