Which pair gives the correct salt and its use?
Answer and explanation
Correct answer: Bleaching powder and disinfection of water
The governing concept is the relationship between the properties of salts and their practical uses. Bleaching powder releases chlorine or active chlorine and is used to disinfect drinking water by killing many disease-causing microorganisms. Sodium chloride is common salt, not a material for bone casts; plaster of Paris is used for casts, not for raising food batter; and washing soda is used in cleaning and softening water, not for producing acid rain. Hence A is correct.
Frequently asked questions
What is the correct answer to this question?
Bleaching powder and disinfection of water
Why is this the correct answer?
The governing concept is the relationship between the properties of salts and their practical uses. Bleaching powder releases chlorine or active chlorine and is used to disinfect drinking water by killing many disease-causing microorganisms. Sodium chloride is common salt, not a material for bone casts; plaster of Paris is used for casts, not for raising food batter; and washing soda is used in cleaning and softening water, not for producing acid rain. Hence A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
