In sha Allah no mcq will come out of this in the exams...!

1. Chapter 7
Solution and Suspension
(Solving the problems is the solution of
problems than increasing the problems by
worrying on the problems…!)
 Definitions
Chemistry MCQs Dr. Sajid Ali Talpur

2. 1. Solution: -the homogeneous mixture of two or
more things.
2. Solute: - It is the component of solution present
in smaller amount and is dissolved by the
solvent.
3. Solvent: - It is the component of solution
present in greater amount and dissolves the
solute.
4. Unsaturated solution: - It is that one solution
which contains less solute than it has the
capacity to dissolve.
5. Saturated solution: - It is that one solution
which contains maximum amount of solute and
can not dissolve more solute at a given
temperature
6. Super saturated solution: - It is that one
solution which contains more solute than the
normal capacity and this is done usually by
increasing temperature.
7. Crystallization: - The process in which
dissolved solute comes out of solution and
forms crystals is called crystallization.
8. Molarity: - The number of moles of solute
dissolved in 1 liter (1dm3
) of a solution is called
molarity. It is denoted by (M).
Chemistry MCQs Dr. Sajid Ali Talpur

3. 9. Molality : - The number of moles of solute
dissolved in 1 kilogram of solution is called
molality. It is denoted by (m).
10. Mole fraction: - Mole fraction of any
component in a solution is the number of moles
of the component divided by total number of
moles making up solution. It is denoted by X.
11. Suspension: - It is defined as a heterogenous
mixture consists of visible particles which
remain suspended in the liquid.
 Multiple Choice Questions
Chemistry MCQs Dr. Sajid Ali Talpur

4. 1. A heterogeneous mixture of two or more
substances is called solution:
a) true b) false
2. there are types of solutions
a) 2 b) 3
c) 5 d) 9
3. The composition of air is as
a) 78% N2, 21% O2, 1% Ar.
b) 78% N2, 15% O2, 5% CO2, 1 other gases
c) 78% N2, 21% O2, 1% other gases
d) all are possible
4. alloys are the mixture of:
a) solid-solid b) solid-liquid
c) liquid-gas d) solid-gas
5. which of the following does not affect the
solubility:
a) temperature b) size of particles
c) pressure d) nature of solute
e) nature of solvent
6. the solubility of gases increases with the
increase in temperature.
a) true b) false
7. Only the solubility of is affected by pressure.
a) solids b) liquid
c) gases d) plasma
8. ionic compounds are not dissolved in:
a) polar solvent b) non-polar
Chemistry MCQs Dr. Sajid Ali Talpur

5. c) water d) A.O.T
9. A solution which has the capacity to dissolve
more solute is called:
a) saturated solution b) unsaturated solution
c) super saturated d) N.O.T
10. the process in which the dissolved solute comes
out of the solution is called:
a) titration b) solubility
c) crystallization d) N.O.T
11. what is the molarity of a solution when 10 g
NaOH are dissolved in 1 liter solution:
a) 0.25M b) 0.5M
c) 1M d) 2M
The Book MCQs
12. the suspended particles in the suspensions are
generally of the size:
a) 10nm b) 100nm
c) 1000nm d) 1200nm
13. the sum of mole fraction of solute and solvent is
equal to:
a) 1 b) 2
c) 3 d) 4
14. solubility is defined as the amount of solute in
gram at a given temperature, dissolved in ……
of the solvent.
Chemistry MCQs Dr. Sajid Ali Talpur

6. a) 10g b) 20g
c) 100g d)1000g
15. the process in which solid directly changes to
vapours is called.
a) sublimation b) evaporation
c) diffusion d) boiling
16. the solubility of gas …….with the rise in
temperature.
a) increase b) decrease
Answer Key
1 B 2 D 3 C
4 A 5 B 6 B
7 C 8 B 9 B
10 C 11 A 12 C
13 A 14 C 15 A
16 B
Chemistry MCQs Dr. Sajid Ali Talpur

7. a) 10g b) 20g
c) 100g d)1000g
15. the process in which solid directly changes to
vapours is called.
a) sublimation b) evaporation
c) diffusion d) boiling
16. the solubility of gas …….with the rise in
temperature.
a) increase b) decrease
Answer Key
1 B 2 D 3 C
4 A 5 B 6 B
7 C 8 B 9 B
10 C 11 A 12 C
13 A 14 C 15 A
16 B
Chemistry MCQs Dr. Sajid Ali Talpur