During the phase transition, _______________ changes?
A. Pressure
B. Volume
C. Temperature
D. All A , B. and C
Thermodynamics for Chemical
Clausius-Clapeyron equation is applicable to _____________ equilibrium processes?
Clausius-Clapeyron equation is applicable to _____________ equilibrium processes?
A. Solid-vapor
B. Solid-liquid
C. Liquid-vapor
D. All A, B. and C
The four properties of a system viz. P, V, T, S are related by ______________ equation?
The four properties of a system viz. P, V, T, S are related by ______________ equation?
A. Gibbs-Duhem
B. Gibbs-Helmholtz
C. Maxwell’s
D. None of these
is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions ?
is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions ?
ItA. The amount of work needed is path dependent
B. Work alone cannot bring out such a change of state
C. The amount of work needed is independent of path
D. More information is needed to conclude anything about the path dependence or otherwise of
the work needed
Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature of the gas)__________________?
Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature of the gas)__________________?
A. T
B. √T
C. T2
D. 1/√T
In the reaction, H2 +I2 ⇌ 2HI, addition of an inert gas will___________________?
In the reaction, H2 +I2 ⇌ 2HI, addition of an inert gas will___________________?
A. Increase the partial pressure of H2
B. Increase the partial pressure of I2
C. Increase the total pressure and hence shift the equilibrium towards the right
D. Not affect the equilibrium conditions
A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. Specific heat of block material is 0.4 kJ.kg-1. K-1. Ignoring the effect of expansion and contraction and also the heat capacity to tank, the total entropy change in kJ.kg-1, K-1 is_________________?
A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. Specific heat of block material is 0.4 kJ.kg-1. K-1. Ignoring the effect of expansion and contraction and also the heat capacity to tank, the total entropy change in kJ.kg-1, K-1 is_________________?
A. -1.87
B. 0
C. 1.26
D. 3.91
One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one ________________?
One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one ________________?
A. Hour
B. Day
C. Minute
D. Second
4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is_________________?
4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is_________________?
A. 4 J
B. ∞
C. 0
D. 8 J
Specific/molar Gibbs free energy for a pure substance does not change during________________?
Specific/molar Gibbs free energy for a pure substance does not change during________________?
A. Sublimation
B. Vaporisation
C. Melting
D. Either A, B. or C.