Cv is given by__________________?

Related Mcqs:

1. 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__________________?

   A. T1/(T1-T2)
   B. T2/(T1-T2)
   C. T1/T2
   D. T2/R1

2. The equilibrium constant for a chemical reaction at two different temperatures is given by__________________?

   A. Kp2/Kp1 = – (ΔH/R) (1/T2 – 1/T1)
   B. Kp2/Kp1 = (ΔH/R) (1/T2 – 1/T1)
   C. Kp2/Kp1 = ΔH (1/T2 – 1/T1)
   D. Kp2/Kp1 = – (1/R) (1/T2 – 1/T1)

3. Claude’s liquefaction process employs the cooling of gases by__________________?

   A. Expansion in an engine
   B. Following a constant pressure cycle
   C. Throttling
   D. None of these

4. A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively) ?

   A. Δ S1 is always Δ SR
   C. Δ S1 is always > Δ SR
   D. Δ S1 is always = Δ SR

5. Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the ____________ equation?

   A. Gibbs-Duhem
   B. Maxwell’s
   C. Clapeyron
   D. None of these

6. Heat of reaction is not influenced by__________________?

   A. The route/method through which final products are obtained
   B. The physical state (e.g., solid, liquid or gaseous) of reactants and products
   C. Whether the reaction is carried out at constant temperature or constant pressure
   D. None of these

7. The variation of heat of reaction with temperature at constant pressure is given by the ____________ law?

   A. Kelvin’s
   B. Antoine’s
   C. Kirchoff’s
   D. None of these

8. Answer: Option B 392. Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to _____________ °C?

   A. 270
   B. 327
   C. 300
   D. 540

9. Trouton’s ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K) ___________________?

   A. λb/Tb
   B. Tb/λb
   C. √(λb/Tb)
   D. √(Tb/λb)

10. When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is___________________?

    A. Same in both the phases
    B. Zero in both the phases
    C. More in vapour phase
    D. More in liquid phase