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Q.

KO2 finds use in breathing equipment and safeguards the user to breath in oxygen generated internally in the apparatus without being exposed to toxic fumes outside. The supply of oxygen is due to

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a

Slow decomposition of KO2

b

Reaction of KO2 with CO2 in the exhaled air

c

Reaction of KO2 with moisture in the essential air

d

Fast decomposition of KO2

answer is B, C.

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Detailed Solution

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KO2 absorbs CO2 to liberates O2

4KO2 +2CO2   2K2CO3 + 3O2 2KO2 +2H2O   2KOH+H2O2 + O2.

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