Entropy change for an irreversible isolated system is__________________?
A. ∞
B. 0
C. < 0
D. > 0
Thermodynamics for Chemical
_____________ law of thermodynamics ascertains the direction of a particular spontaneous process?
_____________ law of thermodynamics ascertains the direction of a particular spontaneous process?
A. Zeroth
B. First
C. Second
D. Third
On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will____________________?
On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will____________________?
A. Increase
B. Decrease
C. Remain same
D. Increase in summer and will decrease in winter
The principle applied in liquefaction of gases is_____________________?
The principle applied in liquefaction of gases is_____________________?
A. Adiabatic expansion
B. Joule-Thomson effect
C. Both A. and B
D. Neither A. nor B
Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ______________ with the increase of reduced temperature?
Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ______________ with the increase of reduced temperature?
A. Decreases
B. Increases
C. Remains constant
D. Decreases logarithmically
Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of___________________?
Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of___________________?
A. Solution
B. Vaporisation
C. Formation
D. Sublimation
The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is__________________?
The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is__________________?
A. Less pronounced
B. More pronounced
C. Equal
D. Data insufficient, can’t be predicted
What happens in a reversible adiabatic expansion process ?
What happens in a reversible adiabatic expansion process ?
A. Heating takes place
B. Cooling takes place
C. Pressure is constant
D. Temperature is constant
Number of phases in a colloidal system is_____________________?
Number of phases in a colloidal system is_____________________?
A. 1
B. 2
C. 3
D. 4
Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a __________________?
Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a __________________?
A. Straight line
B. Sine curve
C. Parabola
D. Hyperbola