Complete the following table. S.NO MIXTURE CONSTITUENTS 1 Air Nitrogen, oxygen, dust particles. 2 Wheat taken from field 3 Pond water 4 Soil

A mixture may have two or more than two substances in any quantity. A mixture has characters of its constituents. Air contains around 78 % nitrogen, 21 % oxygen, remaining 1 % is carbon dioxide, argon, water vapour and other gases. Wheat taken from field contains hay, stones, dust particles, etc. Hay and dust particles can be separated from winnowing, stones can be removed by hand-picking and sieving. Pond water contains mud, minerals, dissolved salts, etc. This water is purified by sedimentation, filtration, and chlorination. Soil is a mixture of humus, water, air and minerals. Humus provide nutrients for the plants. Air helps to breath organisms living in the soil. S.NO MIXTURE CONSTITUENTS 1 Air Oxygen, Nitrogen, Dust particles, water vapours, carbon dioxide, argon, other gases. 2 Wheat taken from field Hay, stones, dust particles. 3 Pond water Mud, dissolved salts and minerals. 4 Soil Air, water, humus and minerals.

Complete the following table. S.No Example Useful part Less useful part Method of separation 1 Rice Rice Hay, small stones Hand-picking, sieving 2 Tea with tea leaves 3 Wheat

Tea with tea leaves can be separated by filtration. Tea from tea leaves is separated using a strainer. Tea is a useful part and tea leaves are less useful part. Wheat may contain hay, small stones as impurities. They can be separated using hand-picking and sieving. The process of separating heavier and lighter components of a mixture by wind or by blowing air is called winnowing. Sieving is a method of separation of two or more components of a mixture on the basis of difference in the size. S.No Example Useful part Less useful part Method of separation 1 Rice Rice Hay, small stones Hand-picking, sieving 2 Tea with tea leaves Tea Tea leaves Filtration 3 Wheat Wheat Hay, small stones Hand-picking, sieving

Segregation of various constituents of a mixture is called separation. It is done to remove the non-useful components and to obtain useful, pure substance. Example: Common salt is obtained from seawater by evaporation.

E M B I B E

SCIENCE & TECHNOLOGY CLASS - 6>Chapter 4 - Separation of Matter>EXERCISE>Q 9

HARD

6th Chhattisgarh Board

IMPORTANT

Earn 100

Explain distillation with help of diagram.

Important Questions on Separation of Matter

MEDIUM

6th Chhattisgarh Board

IMPORTANT

SCIENCE & TECHNOLOGY CLASS - 6>Chapter 4 - Separation of Matter>Exercise 1>Q 1

Complete the following table.

S.NO	MIXTURE	CONSTITUENTS
$1$	Air	Nitrogen, oxygen, dust particles.
$2$	Wheat taken from field
$3$	Pond water
$4$	Soil

MEDIUM

6th Chhattisgarh Board

IMPORTANT

SCIENCE & TECHNOLOGY CLASS - 6>Chapter 4 - Separation of Matter>Exercise 2>Q 1

Complete the following table.

S.No	Example	Useful part	Less useful part	Method of separation
1	Rice	Rice	Hay, small stones	Hand-picking, sieving
2	Tea with tea leaves
3	Wheat