As the temperature is lowered towards the absolute zero, the value of ∂(ΔF)/∂T, then approaches_______________________?

Related Mcqs:

1. As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches________________?

   A. Zero
   B. Unity
   C. Infinity
   D. None of these

2. The absolute entropy for all crystalline substances at absolute zero temperature is ____________________?

   A. Zero
   B. Negative
   C. More than zero
   D. Indeterminate

3. “At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero”. This follows from the __________________?

   A. Third law of thermodynamics
   B. Second law of thermodynamics
   C. Nernst heat theorem
   D. Maxwell’s relations

4. At absolute zero temperature, the _____________ of the gas is zero?

   A. Pressure
   B. Volume
   C. Mass
   D. None of these

5. Absolute zero temperature signifies the ____________________?

   A. Minimum temperature attainable
   B. Temperature of the heat reservoir to which a Carnot engine rejects all the heat that is taken in
   C. Temperature of the heat reservoir to which a Carnot engine rejects no heat
   D. None of these

6. Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is ___________________?

   A. 0
   B. ∞
   C. +ve
   D. -ve

7. Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which___________________?

   A. A homogeneous solution (say of phenol water) is formed
   B. Mutual solubility of the two liquids shows a decreasing trend
   C. Two liquids are completely separated into two layers
   D. None of these

8. The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzmann‟s constant, T = absolute temperature) ?

   A. √(2KT/m)
   B. √(3KT/m)
   C. √(6KT/m)
   D. 3KT/m

9. Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature of the gas)__________________?

   A. T
   B. √T
   C. T2
   D. 1/√T

10. Gibbs free energy of a pure fluid approaches _____________ as the pressure tends to zero at constant temperature?

    A. Infinity
    B. Minus infinity
    C. Zero
    D. None of these