Two moles a monoatomic gas is mixed with six moles of a diatomic gas. The molar specific heat of the mixture at constant volume is:
  • A$\frac{9}{4} R$
  • B$\frac{7}{4} R$
  • C$\frac{3}{2} R$
  • D$\frac{5}{2} R$
JEE MAIN 2024, Diffcult
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