All gases above its inversion temperature, in a throttling process will show__________________?

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. All gases except ____________ shows a cooling effect during throttling process at atmospheric temperature and pressure?

   A. Oxygen
   B. Nitrogen
   C. Air
   D. Hydrogen

3. All gases during throttling process at atmospheric temperature and pressure show a cooling effect except__________________?

   A. CO2
   B. H2
   C. O2
   D. N2

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

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

5. Joule-Thomson effect i.e., a throttling process is a constant _____________ process?

   A. Entropy
   B. Temperature
   C. Internal energy
   D. Enthalpy

6. Throttling process is a/an _____________ process?

   A. Reversible and isothermal
   B. Irreversible and constant enthalpy
   C. Reversible and constant entropy
   D. Reversible and constant enthalpy

7. Throttling (Joule-Thomson effect) process is a constant _____________ process?

   A. Enthalpy
   B. Entropy
   C. Pressure
   D. None of these

8. 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

9. The adiabatic throttling process of a perfect gas is one of constant enthalpy_________________?

   A. In which there is a temperature drop
   B. Which is exemplified by a non-steady flow expansion
   C. Which can be performed in a pipe with a constriction
   D. In which there is an increase in temperature

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

    A. 0
    B. ∞
    C. +ve
    D. -ve