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प्रश्न
Name three chemicals responsible for the surface activity of various detergents.
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उत्तर
Chemicals responsible for the surface activity of various detergents are alkylbenzene sulphonate, alcohol ethoxy sulphates and alkyl sulphates.
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
Fill in the following blank with suitable word:
The sodium salt of a long chain fatty acid is called .............
Fill in the following blank with suitable word:
............. is better than soap for washing clothes when the water is hard.
Explain the process of preparation of soap in laboratory.
Why have detergents replaced soap as a washing agent?
Explain the cleansing action of soap. Draw diagrams to illustrate your answer.
Which one of the following sets of materials can be used to prepare soap?
(A) Neem oil and calcium hydroxide
(B) Castor oil and sodium hydroxide
(C) Mineral oil and sodium hydroxide
(D) Neem oil and magnesium hydroxide
Explain why soap cannot be used in hard water.
Water, coconut oil, and _______ are necessary for soap preparation.
