1.

True or False. If false, give the correct statement:1. Washing soda is used to remove permanent hardness of water.2. Temporary and permanent hardness both can be removed by the method of boiling.3. The pleasant taste of drinking water is due to the presence of dissolved substance which include air, CO2 and minerals.4. Micro-plastics can be found in almost every freshwater source.5. During electrolysis, hydrogen and oxygen are obtained in the ratio 1 : 2

Answer»

1. True

2. False 

Correct statement: Temporary and permanent hardness both can be removed by the method of distillation.

3. True

4. True

5. False

Correct statement: During electrolysis, hydrogen and oxygen are obtained in the ratio 2:1.



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