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प्रश्न
What are the differences between Bath soap and soap for washing clothes?
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उत्तर
| Sr. No. | Bath soap | Soap for washing clothes |
| 1. | It is a type of soft soap and is used for bathing purposes. | It is a type of hard soap and is used for washing clothes. |
| 2. | Soft soaps are a potassium salt of fatty acids. It does not cause irritation of the skin. | Hard soap is a sodium salt of fatty acids. |
संबंधित प्रश्न
List two problems that arise due to the use of detergents instead of soaps.
While preparing soap a small quantity of common salt is generally added to the reaction mixture of vegetable oil and sodium hydroxide. Which one of the following may be the purpose of adding common salt?
(A) To reduce the basic nature of the soap
(B) To make the soap neutral
(C) To enhance the cleansing power of the soap
(D) To favour the precipitation of the soap
Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also?
While studying the saponification reaction, what do you observe when you mix an equal amount of colourless vegetable oil and 20% aqueous solution of NaOH in a beaker?
(A) The colour of the mixture has become dark brown
(B) A brisk effervescence is taking place in the beaker
(C) The outer surface of the beaker has become hot
(D) The outer surface of the beaker has become cold
Mention the essential material (chemicals) to prepare soap in the laboratory. Describe in brief the test of determining the nature (acidic/alkaline) of the reaction mixture of saponification reaction.
Why is common salt (sodium chloride) added during the preparation of soap?
The chemical which is not required for the preparation of soap in the laboratory is:
(a) vegetable oil
(b) baking soda
(c) caustic soda
(d) common salt
What is a soap?
What are the three main constituents of soap?
In the soap micelles
