Question

Q.1 Read the following and answers questions below-
A solution is a homogeneous mixture of two or more substances. These substances may be
solid, liquid or gas. Solutions also exist in solid form and are called Alloys. Solubility of a
solution increases with the increase in the Temperature. Saturation level of a solution can be increased by
increase in the temperature of the solution.

i) Which of the following is not an example of solid- liquid solution.
a) Salt in water
b) Sea water
c) honey in water
d) Sugar syrup

ii) Which of the following is an example of solid solid solution.
a) Cooper
b) Gold
c) Steel
d) Aluminium
d) only IV

iii) After analyzing the given graph a student concluded:
I. Solubility of a solution increased with the increase in the temperature of the solution.

II. Solubility does not affect by increase or decrease in the temperature of the solution.

III. Saturation level of a solution can be increased by increase in the temperature of the solution.

IV. At 900 C the dissolved amount of sodium chloride is maximum.
Choose the correct conclusions from the following options:
a) only I
b) Both I and III
c) I, III, and IV

iv) which among the following is not a colloid solution>
a) blood
b) milk
c) jelly
d) aerated drink

v) Which of the following mixtures is stable?
a) Sand in water
b) Soil in water
c) Milk in water
d) none of the above

Q.2 Name the two components of a colloidal solution. Name these components in clouds.

Q.3 Explain any two physical properties of metals.

Q.4 Classify the following substances into mixtures and compounds
Water, Steel, Soft drinks, Carbon di oxide, Air and Baking soda

Q.5 In which of the following mixture ,path of light rays will be visible? Why?
a) salty water
b) sugar in water
c) milk in water
d) lemonade

Q.6 You are given three beakers, A,B and C. One of these is a solution, other two are
colloidal solution and suspension. Explain how will you identify these mixture types
using Tyndall effect.

Answer 1

Q1 honey in water

Q2 steel

Q3 Both l and l ll