Name the following
10. Two chemicals used to destroy germs present in water 11. Two diseases which spread through impure water.
12. A chemical used for loading.
13. Two substances which add taste to water.
14. Two household methods to get safe drinking water.
10. Two chemicals used to destroy germs present in water 11. Two diseases which spread through impure water.
12. A chemical used for loading.
13. Two substances which add taste to water.
14. Two household methods to get safe drinking water.
Answers & Comments
Answer:
10. 1. Chlorine.
2. Potassium permanganate.
3. Sterilizing water with ozone.
11. 1. Cholera
2. Typhoid fever.
12. Alum.
(The process of adding a chemical to an impure liquid in order to speed up the process of sedimentation is called loading.)
13. 1. Minerals (eg salt.)
2. Carbon di oxide
3. Carbohydrates (eg sugar or starch).
14. 1. Boiling
2. Filteration
3. Distillation. etc.
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