The relative lowering of vapour pressure is directly proportional to molality if the solution is________________?

Related Mcqs:

1. The relative lowering of vapour pressure is_____________________?

   A. equal to the mole fraction of solvent
   B. equal to the mole fraction of solute
   C. directly proportional to the mole fraction of solute
   D. both B & C

2. 18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________?

   A. 8
   B. 5.1
   C. 6
   D. one/fifty one

3. Which law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature?

   A. Charles’ Law
   B. Avogadro’s Law
   C. Graham’s Law
   D. Boyle’s law

   Submitted by: Malik Asghar Hussain

4. The unit of molality is__________________?

   A. moles dm-3
   B. moles kg-1
   C. gram dm-3
   D. none

5. 58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be___________________?

   A. 0.1 M
   B. 1 m
   C. 1 M
   D. 0.1 N

6. Rate of enzymatic reaction is directly proportional to the concentration of___________________?

   A. Enzyme
   B. Substrate
   C. Enzyme and substrate
   D. Enzyme and product

7. Vapour pressure is not affected by_______________?

   A. Surface area
   B. temperature
   C. intermolecular forces
   D. atmospheric pressure

8. A substance having very high vapour pressure at its melting point on heating will show_______________?

   A. Melting
   B. Sublimation
   C. Decomposition
   D. Condensation

9. The strength of solution of an element whose electrode potential is to be measured is________________?

   A. 2M
   B. 1N
   C. 1m
   D. 1M

10. The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is___________?

    A. Dalton’s law
    B. Gay Lussac’s law
    C. Henry’s law
    D. Raoult’s law

    Submitted by: Muhammad Ali Kunbhar