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Question

When NaOH reacts with aluminium metal,the following reaction happens:

NaOH+Al+H2ONaAlO2+Y

If Y is a gas, identify it.


A

H2

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B

H2O

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C

CH4

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D

NO2

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Solution

The correct option is A

H2


When any base reacts with metal, they always liberate hydrogen gas. ​

2Al+2NaOH+2H2O2NaAlO2+3H2

So, Y is H2 gas.


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