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प्रश्न
What are the raw materials required for making soap in a laboratory (or at home)?
उत्तर
he raw materials required for making soap in a laboratory or at home are as follows:
1. Vegetable oil (Castor oil)
2. Sodium hydroxide (Caustic soda), and
3. Sodium chloride (Common salt)
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संबंधित प्रश्न
Describe in brief the cleansing action of soap.
A student takes about 4 ml of distilled water in four test tubes marked P, Q, R and S. He then dissolves in each test tube an equal amount of one salt in one test tube, namely sodium sulphate in P, potassium sulphate in Q, calcium sulphate in R and magnesium sulphate in S. After that he adds an equal amount of soap solution in each test tube. On shaking each of these test tubes well, he observes a good amount of lather (foam) in the test tube marked
(A) P and Q
(B) Q and R
(C) P, Q and S
(D) P, R and S
Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also?
A student requires hard water for an experiment in his laboratory which is not available in the neighbouring area. In the laboratory there are some salts, which when dissolved in distilled water can convert it into hard water. Select from the following groups of salts, a group, each salt of which when dissolved in distilled water will make it hard.
(A) Sodium chloride, Potassium chloride
(B) Sodium sulphate, Potassium sulphate
(C) Sodium sulphate, Calcium sulphate
(D) Calcium sulphate, Calcium chloride
State one advantage of soaps over detergent.
What are the differences between Soap and synthetic detergent?
The alkaline hydrolysis of fatty acids is termed as ______
Soaps are ester of which type of acids?
______ are substances which can undergo chemical changes to produce certain materials.
What are soaps?
