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) ?

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. A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the _____________ mean of P1 and P2.(where, P1 and P2 are initial and final pressures respectively) ?

   A. Logarithmic
   B. Arithmetic
   C. Geometric
   D. Harmonic

3. A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) at 298 K. If the partition is broken, the final temperature of the gas in the container___________________?

   A. Will be greater than 298 K
   B. Will be 298 K
   C. Will be less than 298 K
   D. Cannot be determined

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

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

5. If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will_________________?

   A. Be reduced to 1/4th
   B. Increase four times
   C. Increase two times
   D. None of these

6. 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

7. Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature ____________ as its mole fraction increases?

   A. Decreases
   B. Decreases exponentially
   C. Increases
   D. Remain constant

8. 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

9. 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

10. 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