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प्रश्न
What are the two different types of molecules found in the soap?
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उत्तर
- Loving water molecules.
- Hating water molecules.
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संबंधित प्रश्न
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
What change will you observe if you test soap with litmus paper (red and blue)?
Why is common salt (sodium chloride) added during the preparation of soap?
Which of the two is better for washing clothes when the water is hard: soap or detergent? Give reason for your answer.
What is saponification? Write the chemical equation of the reaction involved in this process. Name all the substances which take part in this process and also those which are formed.
What is a soap?
Describe the structure of a soap molecule with the help of a diagram.
Give a scientific explanation.
Soap forms a precipitate in hard water.
Answer the following question.
In three test tubes A, B, and C, three different liquids namely, distilled water, underground water and distilled water in which a pinch of calcium sulphate is dissolved, respectively are taken. Equal amount of soap Answer is added to each test tube and the contents are shaken. In which test tube will the length of the foam (lather) be longest? Justify your answer.
Why do soaps not work effectively in hard water?
