Boyle’s law for gases states that____________________?
(A) P ∝ 1/V, when temperature is constant
(B) P ∝ 1/V, when temperature & mass of the gas remain constant
(C) P ∝ V, at constant temperature & mass of the gas
(D) P/V = constant, for any gas
The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be _______________?
(A) More
(B) Less
(C) Same
(D) Data insufficient to predict
With increase in pressure (above atmospheric pressure), the Cp of a gas_____________________?
(A) Increases
(B) Decreases
(C) Remains unchanged
(D) First decreases and then increases
PVy = constant, holds good for an isentropic process, which is_________________?
(A) Reversible and isothermal
(B) Isothermal and irreversible
(C) Reversible and adiabatic
(D) Adiabatic and irreversible
As the temperature is lowered towards the absolute zero, the value of ∂(ΔF)/∂T, then approaches_______________________?
(A) Unity
(B) Zero
(C) That of the heat of reaction
(D) Infinity
Which of the following is a thermodynamic property of a system ?
(A) Concentration
(B) Mass
(C) Temperature
(D) Entropy
In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is_______________?
(A) More
(B) Less
(C) Same
(D) Unpredictable; depends on the particular reaction
_____________ law of thermodynamics ascertains the direction of a particular spontaneous process?
(A) Zeroth
(B) First
(C) Second
(D) Third
On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will____________________?
(A) Increase
(B) Decrease
(C) Remain same
(D) Increase in summer and will decrease in winter
Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ______________ with the increase of reduced temperature?
(A) Decreases
(B) Increases
(C) Remains constant
(D) Decreases logarithmically