A flask contains argon and oxygen in the ratio of $3: 2$ in mass and the mixture is kept at $27^{\circ} C$. The ratio of their average kinetic energy per molecule respectively will be ...........
  • A$3: 2$
  • B$9: 4$
  • C$2: 3$
  • D$3:5$
JEE MAIN 2022, Medium
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