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Byju's Answer
Standard IX
Chemistry
Preparation of Hydrogen from Cold Water and Metals
Sodium ______...
Question

Sodium ________ reacts vigorously with cold water.

A
metal
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B
amalgam
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C
in the molten state
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D
none of the above
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Solution

The correct option is A metal
Sodium metal is an extremely reactive metal. When sodium metal comes into contact with water, it displaces hydrogen gas as follows:

2Na(s)+2H2O→2NaOH(aq)+H2(g)

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