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A glass bulb contains \( 2.24 \mathrm{~L} \) of \( \mathrm{H}_{2} \) and \( 1.12 \mathrm{~L} \) of \( \mathrm{D}_{2} \) at \( \mathrm{STP} \). It is connected a fully evacuated bulb by a stopcock with a small opening. The stop-cock is opened for sometime and then closed. The first bulb now contains \( 0.10 \mathrm{~g} \) of \( \mathrm{H}_{2} \). The percentage of \( \mathrm{H}_{2} \) in the mixture is
(a) \( 41.6 \% \)
(b) \( 58.4 \% \)
(c) \( 46.2 \% \)
(d) \( 50 \% \)
\( \mathrm{P} \)
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