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प्रश्न
What are the two different types of molecules found in the soap?
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उत्तर
- Loving water molecules.
- Hating water molecules.
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संबंधित प्रश्न
A student takes four test tubes marked P, Q, R and S of 25 mL capacity and fills 10 mL of distilled water in each. He dissolves one spoon full of four different salts in each as − KCl in P, NaCl in Q, CaCl2 in R and MgCl2 in S. He then adds about 2 mL of a sample of soap solution to each of the above test tubes. On shaking the contents of each of the test tubes, he is likely to observe a good amount of lather (foam) in the test tubes marked
(a) P and Q
(b) R and S
(c) P, Q and R
(d) P, Q and S
Distinguish between esterfication and saponification reaction with the help of the chemical equations for each.
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
Give the reason of formation of scum when soaps are used with hard water.
What is a soap?
Give a scientific explanation.
Soap forms a precipitate in hard water.
The saponification of a fat or oil is done using _____ solution for hot process.
TFM in soaps represents ______ content in soap.
______ are substances which can undergo chemical changes to produce certain materials.
Why do soaps not work effectively in hard water?
