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प्रश्न
The chemical mostly used in the preparation of most of the soaps we use is
(a) Sodium chloride
(b) Potassium hydroxide
(c) Sodium hydroxide
(a) Potassium chloride
उत्तर
Sodium hydroxide
Hence, the correct answer is option (c).
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संबंधित प्रश्न
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
State one use of saponification process.
Explain esterification reaction with the help of a chemical equation. Describe an activity to show esterification.
Fill in the following blank with suitable word:
The sodium salt of a long chain fatty acid is called .............
Give any two differences between soaps and detergents.
What is a soap? Name one soap.
Describe the structure of a soap molecule with the help of a diagram.
Why are soaps not suitable for washing clothes when the water is hard?
Write an answer to the following question.
Name three chemicals responsible for the surface activity of various detergents.
______ molecules go and join with dirt and oil in the cloth.
