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प्रश्न
Water, coconut oil, and _______ are necessary for soap preparation.
उत्तर
Water, coconut oil, and animal fat are necessary for soap preparation.
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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
What change will you observe if you test soap solution with a litmus paper (red and blue)? Give reason for your observation.
Why is soap not suitable for washing clothes when the water is hard?
Which of the two is better for washing clothes when the water is hard: soap or detergent? Give reason for your answer.
A student is testing water to know which is best for cleansing purposes with soaps. He would find that the cleansing action of soaps is best when he uses water obtained from
(a) rain
(b) tap
(c) hand pump
(d) pond
Write an answer to the following question.
Name three chemicals responsible for the surface activity of various detergents.
The alkaline hydrolysis of fatty acids is termed as ______
______ are substances which can undergo chemical changes to produce certain materials.
Why do soaps not work effectively in hard water?
What are the similarities between Soap and synthetic detergent.
