Q. The expression for entropy change given by, ΔS = - nR ln (P₂/P₁), holds good for

View solution

Q. With increase in temperature, the internal energy of a substance

View solution

Q. It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions.

View solution

Q. For a constant pressure reversible process, the enthalpy change (ΔH) of the system is

View solution

Q. The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is

View solution

Q. Fugacity of a component in an ideal gas mixture is euqal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at contant pressure and temperature __________ as its mole fraction increases.

View solution

Q. Entropy is a/an

View solution

Q. In the reaction, represented by, 2SO₂ + O₂ ↔ 2SO₃; ΔH = - 42 kcal; the forward reaction will be favoured by

View solution

Q. At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be

View solution

Q. Boiling of liquid is accompanied with increase in the

View solution

Q. Change of state namely evaportation condensation, freezing and melting is an __________ process.

View solution

Q. Which of the following is not an equation of state?

View solution

Q. A gas shows deviation from ideal behaviour at

View solution

Q. The difference between isothermal compressibility and adiabatic compressibility for an ideal gas is

View solution

Q. 4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

View solution

Q. Compressibility factor (i.e., the ratio of actual volume of gas to the volume predicted by ideal gas law) for all gases are

View solution

Q. Which of the following is not correct for a reversible adiabatic process ?

View solution

Q. The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

View solution

Q. Throttling (Joule-Thomson effect) process is a constant __________ process.

View solution

Q. For the reversible exothermic reaction, N₂ + 3H₂ ↔ 2NH₃, increase of pressure would

View solution