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प्रश्न
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
उत्तर
Soaps are sodium or potassium salts of long-chain fatty acids. They are prepared by the reaction of a long-chain fatty acid with either NaOH or KOH. This reaction is known as the saponification reaction. Among the given sets of materials, a soap can be prepared by the reaction between castor oil (long-chain fatty acid) and sodium hydroxide (NaOH).
Hence, the correct answer is option (B).
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संबंधित प्रश्न
Why do soaps not form lather in hard water?
List two problems that arise due to the use of detergents instead of soaps.
Give any two differences between soaps and detergents.
What is a soap? Name one soap.
What is a soap?
Distinguish between esterification and saponification reactions of organic compounds.
Match the following
| 1. | Soap | C6H5 OH |
| 2. | Cement | CaSO4.2H2O |
| 3. | Fertilizers | NaOH |
| 4. | Gypsum | RCC |
| 5. | Phenol | NPK |
______ to remove strong strains on the clothes.
- Write the formula and draw electron dot structure of carbon tetrachloride.
- What is saponification? Write the reaction involved in this process.
Why do soaps not work effectively in hard water?
