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प्रश्न
Match the following
| 1. | Soap | C6H5 OH |
| 2. | Cement | CaSO4.2H2O |
| 3. | Fertilizers | NaOH |
| 4. | Gypsum | RCC |
| 5. | Phenol | NPK |
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उत्तर
| 1. | Soap | NaOH |
| 2. | Cement | RCC |
| 3. | Fertilizers | NPK |
| 4. | Gypsum | CaSO4.2H2O |
| 5. | Phenol | C6H5 OH |
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संबंधित प्रश्न
Describe in brief the cleansing action of soap.
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
State one advantage of soaps over detergent.
Explain the process of preparation of soap in laboratory.
Explain the cleansing action of soap. Draw diagrams to illustrate your answer.
Give a scientific explanation.
Soap forms a precipitate in hard water.
Explain why synthetic detergents are superior to soap.
Arrange the following statements in correct sequence
- Pour that solution into an empty matchbox, soap can be obtained after drying.
- Take the necessary quantity of water in a jar.
- Then add coconut oil drop by drop and stir it well.
- Add concentrated sodium hydroxide in the jar and allow it to cool.
- Try this soap to wash your hand kerchief.
- Cover your work area with old newspaper.
In the soap micelles
What are soaps?
