Question

(c) Threshing
c Short Answer Type Questions
Answer the following questions:
1. Give two differences between mixture and compound.
2. What is winnowing?
3. What is chromatography?
4. Explain the following terms:
(d) Loading
(a) Cyclone separation
(b) Sieving
5. Why can we see objects more clearly after it rains?
6. Define sublimation.
7. Mention the methods that can be used for the separation of the following mixtures:
(a) Wheat, sugar and husk
(b) Sand, camphor and iron filings
8. What is filtration?
9. Name the different steps used in cleaning the water used for drinking purpose in various cities?
10. What is floatation?
11. Name three physical properties by which you can find the purity of substance.
Basics of Science and Technology - 6



please give me all answers​

Answer 1

The compound is the chemical combination of elements, bonded together in specific proportion.

2. The compound is a pure substance.

3.Example: water and carbon dioxide.

Mixture:

1.The mixture is the physical combination of substances, bonded together in any proportion.

2.The mixture is an impure substance.

3.Example: sand and water and air (mixture of several gases).

The process of separating heavier and lighter components of a mixture by wind or by blowing air is called winnowing

Chromatography is the technique used for separation of those solutes that dissolve in the same solvent.

Cyclonic separation is a method of removing particulates from an air, gas or liquid stream, without the use of filters, through vortex separation.