Related Questions
What is the correct answer?
4
Pick out the wrong statement.
A. A closed system does not permit exchange of mass with its surroundings but may permit exchange of energy.
B. An open system permits exchange of both mass and energy with its surroundings
C. The term microstate is used to characterise an individual, whereas macro-state is used to designate a group of micro-states with common characteristics
What is the correct answer?
4
In case of a close thermodynamic system, there is __________ across the boundaries.
A. No heat and mass transfer
B. No mass transfer but heat transfer
C. Mass and energy transfer
What is the correct answer?
4
Helmholtz free energy (A) is defined as
What is the correct answer?
4
In the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.
What is the correct answer?
4
Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the
What is the correct answer?
4
If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in
What is the correct answer?
4
(1/V) (∂V/∂T)P is the mathematical expression
A. Joule-Thomson co-efficient
B. Specific heat at constant pressure (Cp)
C. co-efficient of thermal expansion
D. Specific heat at constant volume (CV)
What is the correct answer?
4
In a reversible process
What is the correct answer?
4
Ideal refrigeration cycle is
B. Same as reverse Carnot cycle
C. Dependent on the refrigerant's properties
D. The least efficient of all refrigeration processes
What is the correct answer?
4
Degree of freedom of the system ice-watervapour will be
What is the correct answer?
4
Maxwell's relation corresponding to the identity, dH = dS = Vdp + Σμi dni is
A. (∂T/∂V)S, ni = -(∂P/∂S)V, ni
B. (∂S/∂P)T, ni = (∂V/∂T)P, ni
C. (∂S/∂V)T, ni = (∂P/∂T)V, ni
D. (∂T/∂P)S, ni = (∂V/∂S)P, ni
What is the correct answer?
4
Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature __________ as its mole fraction increases.
B. Decreases exponentially
What is the correct answer?
4
A system in which there is exchange of energy but not of mass, is called a/an __________ system.
What is the correct answer?
4
Standard temperature and pressure (S.T.P.) is
What is the correct answer?
4
Sound waves propagation in air exemplifies an __________ process.
What is the correct answer?
4
At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)
What is the correct answer?
4
Internal energy of an ideal gas
A. Increases with increase in pressure
B. Decreases with increase in temperature
C. Is independent of temperature
What is the correct answer?
4
In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v1 = 1 m3 and v23 m3) is maximum, when the value of 'n' is
What is the correct answer?
4
Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is
What is the correct answer?
4
The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.
What is the correct answer?
4
For a single component two phase mixture, the number of independent variable properties are
What is the correct answer?
4
Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a
What is the correct answer?
4
Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2.Degree of dissociation of PCl5 will
A. Decrease on addition of Cl2
B. Increase on addition of an inert gas at constant pressure
C. Decrease on increasing the pressure of the system
What is the correct answer?
4
What is the degree of freedom for a system comprising liquid water equilibrium with its vapour?
What is the correct answer?
4
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of
What is the correct answer?
4
The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1 is the activity co-efficient of component 1, is
What is the correct answer?
4
In a turbine, the fluid expands almost
What is the correct answer?
4
PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process.
What is the correct answer?
4
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
What is the correct answer?
4
(∂H/∂T)P is the mathematical expression for