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.Management Sciences
Category: Thermodynamics for Chemical
Standard temperature and pressure (S.T.P.) is__________________?
0
A. 0°C and 750 mm Hg
B. 15°C and 750 mm Hg
C. 0°C and 1 kgf/cm2
D. 15°C and 1 kgf/cm2
Solid and liquid phases of a substance are in equilibrium at the____________________?
A. Critical temperature
B. Melting point
C. Freezing point
D. Both B. and C
For a cyclic process, a fixed ratio between heat and work___________________?
A. Always exists
B. May exist
C. Never exists
D. Is difficult to predict
When a gas in a vessel expands, its internal energy decreases. The process involved is________________?
A. Reversible
B. Irreversible
C. Isothermal
D. Adiabatic
The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is__________________?
A. Less
B. More
C. Same
D. Dependent on climatic conditions
Fugacity and pressure are numerically equal, when the gas is____________________?
A. In standard state
B. At high pressure
C. At low temperature
D. In ideal state
What happens in a reversible adiabatic expansion process ?
A. Heating takes place
B. Cooling takes place
C. Pressure is constant
D. Temperature is constant
Measurement of thermodynamic property of temperature is facilitated by ____________ law of thermodynamics?
A. 1st
B. Zeroth
C. 3rd
D. None of these
The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzmann‟s constant, T = absolute temperature) ?
A. √(2KT/m)
B. √(3KT/m)
C. √(6KT/m)
D. 3KT/m
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