The relative lowering of vapour pressure is_____________________?

Related Mcqs:

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

   A. concentrated
   B. dilute
   C. saturated solution
   D. all of the above

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. Vapour pressure is not affected by_______________?

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

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

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

5. When Ammonia is used as a refrigerant in vapour compression cycle?

   A. Cu Tubing used
   B. Steel tubes used
   C. Both a & b
   D. Material does not effect by refrigerant

   Submitted by: Ghulam Murtaza

6. The amount of heat absorbed when one mole of a liquid is changed into gas at its boiling point is_____________________?

   A. Molar heat of sublimation
   B. Molar heat of fusion
   C. Molar heat of vapourization
   D. Latent heat of that liquid

7. Secondary cell is_____________________?

   A. rechargeable
   B. non rechargeable
   C. electrolytic cell
   D. Daniel cell

8. The halogen having highest electron affinity is_____________________?

   A. Fluorine
   B. Chlorine
   C. Bromine
   D. Iodine

9. The relative attraction of the nucleus for the electrons in a chemical bond is called _________________?

   A. Ionization energy
   B. Electron affinity
   C. Electro negativity
   D. None of the above

10. What is the relative rate of effusion of CO and CO2 ?

    A. CO is 1.25 times faster than CO2
    B. CO is 3.75 times faster than CO2
    C. CO is 1.25 times faster than CO
    D. Both diffuse at the same rate