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प्रश्न
Assertion: Sodium chloride is added to precipitate soap after saponification.
Reason: Hydrolysis of esters of long-chain fatty acids by alkali produces soap in colloidal form.
विकल्प
Assertion and reason both are correct statement but reason does not explain assertion.
Assertion and reason both are correct and reason explains the assertion.
Both assertion and reason are wrong statement.
Assertion is correct statement reason is wrong statement.
Assertion is wrong statement reason is correct statement.
उत्तर
Assertion and reason both are correct and reason explains the assertion.
Explanation:
Hydrolysis of esters of long-chain fatty acids by alkali gives soap a colloid. The process is called saponification. Sodium chloride is added to precipitate soap which is in colloidal form.
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संबंधित प्रश्न
Write the chemical equation for preparing sodium soap from glyceryl oleate . Structural formulae of the compounds are given below.
(C17H32COO)3C3H5 – Glyceryl oleate
Following type of nom-ionic detergents are present in liquid detergents, emulsifying agents and wetting agents. Label the hydrophilic and hydrophobic parts in the molecule. Identify the functional group (s) present in the molecule.
Why do soaps not work in hard water?
Can you use soaps and synthetic detergents to check the hardness of water?
Explain the cleansing action of soaps.
Which of the following enhances leathering property of soap?
Why is it safer to use soap from the environmental point of view?
What is the side product of soap industry? Give reactions showing soap formation.
What is the difference between bathing soap and washing soaps?
Match the soaps given in Column I with items given in Column II.
| Column I | Column II |
| (i) Soap chips | (a) dried miniature soap bubbles |
| (ii) Soap granules | (b) small broken pieces of soap formed from melted soaps |
| (iii) Soap powder | (c) soap powder + abrasives + builders \[\ce{(Na2CO3,Na3PO4)}\] |
| (iv) Scouring soap | (d) soap powder + builders like \[\ce{Na2CO3}\] and \[\ce{Na3PO4}\] |
