Page 120 - Science Class 6 Times Publication

6. Name the following:

a. Two liquids that are soluble in water.
b. A liquid that is insoluble in water but burns.

c. Solid substance that remains on lter paper after  ltration.
d. A bamboo tray used to separate rice from husk.
e. Two types of mixtures.
f. Two types of heterogeneous mixtures.

g. Components of brine.

7. Give reasons:

a. We have to separate the mixtures.
b. All impure substances are not harmful.
c. A mixture of iron llings and sand can be separated by using

a magnet.
d. A sentence “shake well before use” is written on the bottle of
medicine.

8. Dene the following:
a. Solution b. Residue c. Filtrate
d. Sedimentation e. Decantation f. Filtration

g. Suspension h. Colloid i. Winnowing

9. Write down differences between:

a. Homogeneous mixture and heterogeneous mixture
b. Suspension and solution

c. Residue and  ltrate
d. Pure and impure substances

10. Answer these questions:

a. Describe the process of ltration to separate the mixture of
sand and water.
b. What is a homogeneous mixture? Give examples.
c. Describe the process of sedimentation and decantation.

Times' Crucial Science and Environment 116 Book 6