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प्रश्न
How is soap made? Write a word equation involved in soap making.
उत्तर
Soap is prepared by heating animal fat or vegetable oil (esters) with concentrated sodium hydroxide solution. Esters react with sodium hydroxide to give soap and glycerol. Saponification is the process of preparing soap by the hydrolysis of fats with alkalis.
Equation involved in soap making :
Fat or oil (Ester) + Sodium Hydroxide → Soap (Sodium salt of fatty acid) + Glycerol (alcohol)
APPEARS IN
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
Fill in the following blank with suitable word:
............. is better than soap for washing clothes when the water is hard.
What change will you observe if you test soap solution with a litmus paper (red and blue)? Give reason for your observation.
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.
Explain the cleansing action of soap. Draw diagrams to illustrate your answer.
Consider the following oils :
(I) Mobil oil
(II) Castor oil
(III) Turpentine oil
(IV) Kerosene
(V) Mustard oil
(VI) Coconut oil
Which of these can be used for prepartion of soap?
(a) I, II, III, VI
(b) II, V, VI
(c) II, III, V, VI
(d) II, III, VI
What are the differences between Soap and synthetic detergent?
Match the following
| 1. | Soap | C6H5 OH |
| 2. | Cement | CaSO4.2H2O |
| 3. | Fertilizers | NaOH |
| 4. | Gypsum | RCC |
| 5. | Phenol | NPK |
TFM in soaps represents ______ content in soap.
______ to remove strong strains on the clothes.
