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.Management Sciences
Category: Thermodynamics for Chemical
In any spontaneous process, the ______________ free energy decreases ?
0
A. Helmholtz
B. Gibbs
C. Both A. & B.
D. Neither A. nor B.
The melting point of paraffin wax (which contracts on solidification) _______________ with pressure rise?
A. Increases
B. Decreases
C. Remains unchanged
D. Decreases linearly
An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to_________________?
A. 12 P1V1
B. 6 P1 V1
C. 3 P1V1
D. P1 V1
The point at which all the three (solid, liquid and gas) phases co-exist, is known as the ____________ point?
A. Freezing
B. Triple
C. Boiling
D. Boyle
In the ammonia synthesis reaction, N2 + 3H2 ⇌ 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by___________________?
A. High temperature
B. Low pressure
C. Low temperature only
D. Both low temperature and high pressure
If two gases have same reduced temperature and reduced pressure, then they will have the same____________________?
A. Volume
B. Mass
C. Critical temperature
D. None of these
Requisites of a reversible process is that the ____________________?
A. System and surroundings pressure be equal
B. Friction in the system should be absent
C. System and surroundings temperature be equal
D. None of these
Third law of thermodynamics is concerned with the__________________?
A. Value of absolute entropy
B. Energy transfer
C. Direction of energy transfer
D. None of these
Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be___________________?
A. Same
B. Doubled
C. Halved
D. One fourth of its original value
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