Question

(a) boiling
(b) chlorination
B. Give two examples of each :
1. Gases present in the air
2. Soluble impurities
3. Insoluble impurities
4. Methods for removing insoluble impurities
5. Methods for removing soluble impurities
Fill in the blanks :
1.
Weather changes take place in
keeps the process of burning u
2.​

Answer 1

a)Boiling is the process by which a liquid turns into a vapor when it is heated to its boiling point.

b)Water chlorination is the process of adding chlorine.This method is used to kill bacteria, viruses and other microbes in water.

1.carbon dioxide, oxygen

2.salt,sugar

3.chalk,sand

4.sedimentation,decantation

5.evaporation, distillation

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