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20 ml of ethyne requires …… ml of air at STP for complete combustion.
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By Expert Faculty of Sri Chaitanya
a
50 ml
b
25 ml
c
238 ml
d
192 ml
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Correct option is C
C2H2g + 52O2g → 2CO2g + H2Ol ; 20ml 50ml Volume of oxygen required=50ml; Air contains 21% by volume of oxygen ; Volume of air required=10021×50=238 ml ;
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