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Reaction of Metals with Bases

Which of the ...

Question

Which of the following metals is used in the laboratory preparation of hydrogen gas?

A

Sodium

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B

Zinc

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C

Lead

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D

Aluminium

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Solution

The correct option is B
Zinc

Metals like sodium, potassium and calcium react with water to give hydrogen gas but this reaction is highly exothermic. The only suitable metal to release hydrogen gas with moderate levels of energy is zinc. Hence only zinc is used in the laboratory preparation of hydrogen gas.

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Reaction of Metals with Bases

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