The conversion of vapours back into their liquid state is called__________________?

Related Mcqs:

1. The process in which solid changes directly into vapours without passing through liquid state?

   A. Decantation
   B. Sublimation
   C. Evaporation
   D. None

   Submitted by: Naintara Mustafa

2. Direct conversion of solids into vapours is called ___________________?

   A. Solvent extraction
   B. sublimation
   C. crystallization
   D. vaporization

3. The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________?

   A. vaporization
   B. evaporation
   C. crystallization
   D. sublimation

4. Formation of vapours from the surface of a liquid is called________________?

   A. vapourization
   B. evaporation
   C. condensation
   D. cracking

5. The partial pressure exerted by the water vapours is called_______________?

   A. Surface tension
   B. Aqueous tension
   C. Vapour pressure
   D. Hydraulic pressure

6. If a physical and chemical change takes place at a constant pressure then the heat change during the process is called__________________?

   A. Heat of transition
   B. Heat of fusion
   C. Enthalpy change
   D. All of above

7. When substance moves from a solid to a liquid state all of the following changes occur except__________________?

   A. Molecules become more disordered
   B. K.E of the molecules decreases
   C. Intermolecular forces become weaker
   D. Molecule become further separated

8. The only non metal exists in liquid state is ___________?

   A. Mercury
   B. Bromine
   C. Phosphorus
   D. Iodine

   Submitted by: Aamir khan Hullio

9. Decrease in oxidation number is called__________________?

   A. oxidation
   B. reduction
   C. oxidation-reduction
   D. all of above represent same entity

10. When – COOH is attached directly to the benzene ring the acid is called__________________?

    A. Aliphatic
    B. Alicyclic
    C. Carboxylic
    D. Aromatic