set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Give thought to following statements.

1. In the process of osmosis, the solvent moves towards a dilute solution from the concentrated solution.
2. In reverse osmosis internal pressure but upon a dilute solution.

a) Only 2

b) Both 1 and 2

c) Only 1

d) Neither 1 nor 2

Question : 2

Which one of the following properties changes with valency?

a) Equivalent weight

b) Molecular weight

c) Atomic weight

d) Density

Question : 3

The technique of chromatography is used to

a) Determine the structure of substances

b) Dry distillation of colouring substances

c) Identify colour substances

d) Separate the substances from a mixture

Question : 4

Newlands could classify elements only upto

a) chlorine

b) calcium

c) copper

d) chromium

Question : 5

Which of the following statement is not true?

a) Addition of solute to a solution increases its water potential

b) Water vapour pressure of any solution is lower than vapour pressure of pure water

c) Boiling point of any water solution is higher than pure water

d) When a solution is separated with the help of semipermeable membrane, then water flow can be stopped by giving pressure to the solution

Question : 6

Mendeleev classified elements in

a) eight periods and eight groups

b) seven periods and eight groups

c) increasing order of atomic groups

d) eight periods and seven groups