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  • Question
  • The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be __________ times.


  • Options
  • A. 1/2
  • B. 4
  • C. 2
  • D. 1/4

  • Correct Answer
  • 2 


  • Stoichiometry problems


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    • 1. With increase in the solute concentration, the specific heat of aqueous solutions

    • Options
    • A. increases
    • B. decreases
    • C. remains unchanged
    • D. either (a) or (b); depends on the type of solution
    • Discuss
    • 2. Unit of mass velocity is

    • Options
    • A. kg/m . hr
    • B. kg/m2.hr
    • C. kg/hr
    • D. kg/m2
    • Discuss
    • 3. Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature?

    • Options
    • A. Chlorine
    • B. Nitrogen
    • C. Ethane
    • D. All the gases will have the same KE
    • Discuss
    • 4. The viscosity of water at room temperature may be around one

    • Options
    • A. centipoise
    • B. poise
    • C. stoke
    • D. both (b) &(c)
    • Discuss
    • 5. The heat capacity of most substances is greater for the __________ state.

    • Options
    • A. solid
    • B. liquid
    • C. gaseous
    • D. none of these
    • Discuss
    • 6. 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

    • Options
    • A. 2M
    • B. M/2
    • C. M
    • D. M/4
    • Discuss
    • 7. Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere.

    • Options
    • A. 0.5
    • B. 1
    • C. 1.5
    • D. 2
    • Discuss
    • 8. Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the

    • Options
    • A. nature of the liquid.
    • B. nature of the gas.
    • C. temperature of the liquid. id) total pressure.
    • Discuss
    • 9. At a temperature of 0°K, the molecules of a gas have only __________ energy.

    • Options
    • A. rotational
    • B. vibrational
    • C. translational
    • D. none of these
    • Discuss
    • 10. In a chemical process, the recycle stream is purged for

    • Options
    • A. increasing the product yield.
    • B. enriching the product.
    • C. limiting the inerts.
    • D. heat conservation.
    • Discuss


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