At a temperature of 0°K, the molecules of a gas have only _______________ energy?

Related Mcqs:

1. 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

2. If 1 Nm3 of O2 contains ‘N’ number of molecules, then number of molecules in 2Nm3 of SO2 will be_________________?

   A. N
   B. N/2
   C. 2N
   D. 4N

3. Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules ____________________?

   A. Do not lose energy on collision
   B. Are above the inversion temperature
   C. Do not exert attractive force on each other
   D. Do work equal to loss in kinetic energy

4. The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________________?

   A. 2M
   B. M/2
   C. M
   D. M/4

5. The temperature of a gas in a closed container is 27° C. If the temperature of the gas is increased to 300° C, then the pressure exerted is___________________?

   A. Doubled
   B. Halved
   C. Trebled
   D. Unpredictable

6. 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

7. The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law)____________________?

   A. V1/V2
   B. V2/V1
   C. V1 – V2
   D. V1.V2

8. 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

9. If the absolute temperature of an ideal gas is tripled and simultaneously the pressure is reduced to one third; then the volume of gas will _______________?

   A. Remain unaltered
   B. Increase nine fold
   C. Increase three fold
   D. Decrease three fold

10. While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is _______________?

    A. Infinity
    B. Unity
    C. Constant
    D. Negative