Joule-Thomson co-efficient for a perfect gas is_____________________?
A. Zero
B. Positive
C. Negative
D. None of these
CHEMICAL ENGINEERING
Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will_________________?
Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will_________________?
A. Increase
B. Decrease
C. Remain unchanged
D. First fall and then rise
The temperature at which both liquid and gas phases are identical, is called the _____________ point?
The temperature at which both liquid and gas phases are identical, is called the _____________ point?
A. Critical
B. Triple
C. Freezing
D. Boiling
If an ideal solution is formed by mixing two pure liquids in any proportion, then the ___________________ of mixing is zero?
If an ideal solution is formed by mixing two pure liquids in any proportion, then the ___________________ of mixing is zero?
A. Enthalpy
B. Volume
C. Both A. & B.
D. Neither A nor B
Entropy is a/an___________________?
Entropy is a/an___________________?
A. State function
B. Macroscopic property
C. Extensive property
D. None of these
Isentropic process means a constant _____________________ process ?
Isentropic process means a constant _____________________ process ?
A. Enthalpy
B. Pressure
C. Entropy
D. None of these
For an ideal solution, the value of activity co-efficient is______________________?
For an ideal solution, the value of activity co-efficient is______________________?
A. 0
B. 1
C. 1
Heat pump_______________________?
Heat pump_______________________?
A. Accomplishes only space heating in winter
B. Accomplishes only space cooling in summer
C. Accomplishes both A. and B
D. Works on Carnot cycle
The equation Tds = dE – PdV applies to___________________?
The equation Tds = dE – PdV applies to___________________?
A. Single phase fluid of varying composition
B. Single phase fluid of constant composition
C. Open as well as closed systems
D. Both B. and C
Throttling (Joule-Thomson effect) process is a constant _____________ process?
Throttling (Joule-Thomson effect) process is a constant _____________ process?
A. Enthalpy
B. Entropy
C. Pressure
D. None of these