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JEE Advanced2009PhysicsKinetic Theory of GasesActual

C_V and C_p denote the molar specific heat capacities of a gas at constant volume and constant pressure, respectively. Then

Options

  1. AC_p-C_V is larger for a diatomic ideal gas than for a monoatomic ideal gas
  2. BC_p+C_V is larger for a diatomic ideal gas than for a monoatomic ideal gas.
  3. CC_p C_V is larger for a diatomic ideal gas than for a monoatomic ideal gas
  4. DC_p C_V is larger for a diatomic ideal gas than for a monoatomic ideal gas

Correct answer

B. C_p+C_V is larger for a diatomic ideal gas than for a monoatomic ideal gas.

Step-by-step solution

For monoatomic gas, C_p= 5 2 R and C_V= 3 2 R For diatomic gas, C_p= 7 2 R and C_V= 5 2 R

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