What is the value of Joule-Thomson co-efficient for an ideal gas ?

Related Mcqs:

1. Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is ___________________?

   A. 0
   B. ∞
   C. +ve
   D. -ve

2. Joule-Thomson co-efficient for a perfect gas is_____________________?

   A. Zero
   B. Positive
   C. Negative
   D. None of these

3. The value of Joule-Thomson co-efficient, in case where cooling occurs after the throttling process is________________?

   A. 0
   B. ∞
   C. +ve
   D. -ve

4. The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is__________________?

   A. ∞
   B. 1
   C. 0
   D. -ve

5. Joule-Thomson co-efficient is defined as__________________?

   A. μ = (∂P/∂T)H
   B. μ = (∂T/∂P)H
   C. μ = (∂E/∂T)H
   D. μ = (∂E/∂P)H

6. Joule-Thomson co-efficient depends on the_____________________?

   A. Pressure
   B. Temperature
   C. Both A. & B
   D. Neither A. nor B

7. Joule-Thomson Co-efficient at any point on the inversion curve is___________________?

   A. ∞
   B. +ve
   C. 0
   D. -ve

8. In Joule-Thomson porous plug experiment, the__________________?

   A. Enthalpy does not remain constant
   B. Entire apparatus is exposed to surroundings
   C. Temperature remains constant
   D. None of these

9. Joule-Thomson experiment is__________________?

   A. Isobaric
   B. Adiabatic
   C. Isenthalpic
   D. Both B. & C.

10. Gases are cooled in Joule-Thomson expansion, when it is _____________ inversion temperature?

    A. Below
    B. At
    C. Above
    D. Either B. or C.