Requisites of a reversible process is that the ____________________?
(A) System and surroundings pressure be equal
(B) Friction in the system should be absent
(C) System and surroundings temperature be equal
(D) None of these
Internal energy of an ideal gas___________________?
(A) Increases with increase in pressure
(B) Decreases with increase in temperature
(C) Is independent of temperature
(D) None of these
Solid and liquid phases of a substance are in equilibrium at the____________________?
(A) Critical temperature
(B) Melting point
(C) Freezing point
(D) Both
For an isothermal reversible compression of an ideal gas_______________?
(A) Only ΔE = 0
(B) Only ΔH =0
(C) ΔE = ΔH = 0
(D) dQ = dE
In the equation, PVn = constant, if the value of n = 1, then it represents a reversible _____________ process?
(A) Isothermal
(B) Isobaric
(C) Polytropic
(D) Adiabatic
The absolute entropy for all crystalline substances at absolute zero temperature is ____________________?
(A) Zero
(B) Negative
(C) More than zero
(D) Indeterminate
For spontaneous changes in an isolated system (S = entropy) ___________________?
(A) ds = 0
(B) ds <0
(C) ds > 0
(D) ds = Constant
For an exothermic reaction ____________________?
(A) Only enthalpy change (ΔH) is negative
(B) Only internal energy change (ΔE) is negative
(C) Both ΔH and ΔE are negative
(D) Enthalpy change is zero
Joule-Thomson effect i.e., a throttling process is a constant _____________ process?
(A) Entropy
(B) Temperature
(C) Internal energy
(D) Enthalpy
Which of the following is Virial equation of state ?
(A) (p + a/V2)(V – b) = nRT
(B) PV = nRT
(C) PV = A + B/V + C/V2 + D/V3 + …
(D) None of these