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प्रश्न
What are the differences between Soap and synthetic detergent?
उत्तर
| Soap | Synthetic detergent | |
| 1. | Soaps are sodium salts of fatty acids (soft soap) or potassium salts of fatty acids (hard soap). | Synthetic detergents are made up of raw materials like fats or kerosene. |
| 2. | They can be used only with soft water. | They can be used with both soft and hard water. |
संबंधित प्रश्न
Differentiate between Toilet soap and Laundry soap.
Describe in brief the cleansing action of soap.
A student takes four test tubes marked P, Q, R and S of 25 mL capacity and fills 10 mL of distilled water in each. He dissolves one spoon full of four different salts in each as − KCl in P, NaCl in Q, CaCl2 in R and MgCl2 in S. He then adds about 2 mL of a sample of soap solution to each of the above test tubes. On shaking the contents of each of the test tubes, he is likely to observe a good amount of lather (foam) in the test tubes marked
(a) P and Q
(b) R and S
(c) P, Q and R
(d) P, Q and S
Use of synthetic detergents causes pollution of water.
Why is soap not suitable for washing clothes when the water is hard?
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 the difference between the chemical composition of soaps and detergents? State in brief the action of soaps in removing an oily spot from a shirt. Why are sops not considered suitable for washing where water is hard?
Explain the action of soap in removing an oily spot from a piece of cloth.
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.
Write an answer to the following question.
Name three chemicals responsible for the surface activity of various detergents.
