Q.1
Pick out the correct statement.
Q.2
Pick out the wrong statement.
Q.3
Ideal gas law is applicable at
Q.4
Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of
Q.5
Work done may be calculated by the expression ∫p dA for __________ processes.
Q.6
Generation of heat by friction is an example of a/an __________ change.
Q.7
Rotary lime kiln is an example of a/an __________ system.
Q.8
The equation, Cp - Cv = R, is true for __________ gas.
Q.9
Duringthe phase transition, __________ changes.
Q.10
The specific heat of saturated water vapour at 100°C is
Q.11
Consider the reaction, C + O₂ ⇋ CO₂ ;ΔH = - 94 kcal. What will be the value of ΔH for the reaction CO₂ → C + O₂?
Q.12
In a working refrigerator, the value of COP is always
Q.13
Pick out the undesirable property for a good refrigerant.
Q.14
The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.
Q.15
Pick out the extensive property out of the following.
Q.16
Entropy change of mixing two liquid substances depends upon the
Q.17
Ideal refrigeration cycle is
Q.18
Specific volume of an ideal gas is
Q.19
With increase in temperature, the atomic heat capacities of all solid elements
Q.20
When a gas is subjected to adiabatic expansion, it gets cooled due to
Q.21
Sound waves propagation in air exemplifies an __________ process.
Q.22
Which of the following exemplifies an adiabatic process?
Q.23
4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is
Q.24
Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system ?
Q.25
Which is not constant for an ideal gas?
Q.26
Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a
Q.27
Choose the condition that must be specified in order to liquify CO₂ (triple point for CO₂ is - 57°C and 5.2 atm).
Q.28
Entropy is a measure of the __________ of a system.
Q.29
Gibbs free energy per mole for a pure substance is equal to the
Q.30
Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the
Q.31
Pick out the correct statement:
Q.32
Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature of the gas )
Q.33
If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in
Q.34
__________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low.
Q.35
The necessary and sufficient condition for equilibrium between two phases is
Q.36
Pick out the wrong statement.
Q.37
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of
Q.38
When a system is in equilibrium for all possible processes, the differential or finite change of entropy is
Q.39
For a spontaneous process, free energy
Q.40
A large iceberg melts at the base, but not at the top, because of the reason that
Q.41
Joule-Thomson co-efficient depends on the
Q.42
In Joule-Thomson porous plug experiment, the
Q.43
Entropy, which is a measure of the disorder of a system is
Q.44
Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The reatio of chemical potential to free energy of a pure substance at oconstant temperature and pressure is
Q.45
One ton of refrigeration capacity is equivalent to the heat removal rate of
Q.46
In jet refrigerators, the refrigerating fluid is practically always
Q.47
High __________ is an undesirable property for a good refrigerant.
Q.48
Joule-Thomson Co-efficient at any point on the inversion curve is
Q.49
Internal energy of an ideal gas
Q.50
In an ideal refrigeration cycle, the change in internal energy of the fluid is
0 h : 0 m : 1 s