The volume of oxygen evolved at STP by decomposition of \( 0.68 \ma...

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The volume of oxygen evolved at STP by decomposition of \( 0.68 \mathrm{~g} \) ' 20 volume' hydrogen peroxide solution is :
(a) \( 2.24 \mathrm{~mL} \)
(b) \( 22.4 \mathrm{~mL} \)
(MHT CET 2014)
\( \mathrm{P} \)
(c) \( 224 \mathrm{~mL} \)
(d) \( 2240 \mathrm{~mL} \)
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