Two non-reactive monoatomic ideal gases have their atomic masses in the ratio $2: 3$. The ratio of their partial pressures, when enclosed in a vessel kept at a constant temperature, is $4: 3$. The ratio of their densities is:
  • A$1: 4$
  • B$1: 2$
  • C$6: 9$
  • D$8: 9$
IIT 2013, Medium
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