Question

true or false
3. Air is a mixture of gase.
4. Milk is a homogeneous mixture
S. Crystallisation method is used for purification of sugar.
6. Salt and water form homogeneous mixture
7. On filtering a solution, the part collected on the filter paper is called filtrate.
8. Centrifugation process is used for separating cream from the milk.
9. Mixtures have an indefinite proportion of two or more substances.
10. Ammonium chloride sublimes on heating.
111
D. Match the following
1. Sedimentation
2. Centrifugation
3. Filtration
4. Evaporation
5. Hand picking
6. Winnowing
a.Method to obtain salt from sea water
b. Separating husk from grains
C. Picking stones from rice
d. Separating suspended particles in a liquid by high speed rotation
e. Separation of solid liquid mixture using filter paper
f Settling down of heavy particles in a liquid
E. Circle the odd one out.
1. Gold, Copper, Silver, Salt
Water Air Sunhuric Acid Aluminium​

Answer 1

C.3.True

4.False

5.true

6.true

7.true

8.false

9.False

10.true.

D.1.d

2.e

3.a

4.c

5.b

E.1.Salt.