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Q.

KO2 (potassium super oxide) is used in oxygen cylinders in space and submarines because it 

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a

absorbs CO2 and increases O2 content 

b

eliminates moisture 

c

absorbs CO2

d

produces ozone. 

answer is A.

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Detailed Solution

4KO2+2CO22K2CO3+3O2
KO2 is used as an oxidising agent. It is used as air purifier  in space capsules. Submarines and breathing masks as it produces oxygen and remove carbon dioxide. 

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KO2 (potassium super oxide) is used in oxygen cylinders in space and submarines because it