In case of an _______________ process, the temperature of the system increases?
(A) Isothermal compression
(B) Isothermal expansion
(C) Adiabatic expansion
(D) Adiabatic compression
A refrigerator may be termed as a____________________?
(A) Heat pump
(B) Heat engine
(C) Carnot engine
(D) None of these
When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?
(A) More in vapour phase
(B) More in liquid phase
(C) Same in both the phases
(D) Replaced by chemical potential which is more in vapour phase
With increase in compression ratio, the efficiency of the otto engine________________?
(A) Increases
(B) Decreases
(C) Remain constant
(D) Increases linearly
Entropy of a substance remains constant during a/an ____________ change?
(A) Reversible isothermal
(B) Irreversible isothermal
(C) Reversible adiabatic
(D) None of these
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
(D) None of these
______________ Equation predicts the activity co-efficient from experimental data ?
(A) Lewis-Randall
(B) Margules
(C) Van Laar
(D) Both
The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is__________________?
(A) -2 RT ln 0.5
(B) -RT ln 0.5
(C) 0.5 RT
(D) 2 RT
At normal boiling point, molar entropy of vaporisation is _____________ Joule/K°.mole?
(A) 72
(B) 92
(C) 142
(D) 192
A large iceberg melts at the base, but not at the top, because of the reason that_________________?
(A) Ice at the base contains impurities which lowers its melting point
(B) Due to the high pressure at the base, its melting point reduces
(C) The iceberg remains in a warmer condition at the base
(D) All A,