A cylinder contains $10\, kg$ of gas at pressure of ${10^7}\,\,N/{m^2}.$ The quantity of gas taken out of the cylinder, if final pressure is $2.5 \times {10^6}\,N/{m^2},$ will be ..... $kg$ (Temperature of gas is constant)
A$15.2$
B$3.7$
C$0$
D$7.5$
Medium
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D$7.5$
d (d) $PV = mrT$ ==> $P \propto \,m \,\,[V, r, T \to constant]$
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