2. Questions Bank
  3. JEE Main & Advanced
  4. Chemistry
  5. Thermodynamics / रासायनिक उष्मागतिकी

JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank First law of thermodynamics and Hess law

  • question_answer
    During an isothermal expansion of an ideal gas its [CBSE PMT 1991]

    A)                 Internal energy increases

    B)                 Enthalpy decreases

    C)                 Enthalpy remains unaffected

    D)                 Enthalpy reduces to zero

    Correct Answer: C

    Solution :

           During isothermal expansion of ideal gas, \[\Delta T=0\]                                 \[\Delta H=\Delta E+P\Delta V\]\[=\Delta E+nR\Delta T\]\[=0+0=0\].


You need to login to perform this action.
You will be redirected in 3 sec spinner