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प्रश्न
Water, coconut oil, and _______ are necessary for soap preparation.
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उत्तर
Water, coconut oil, and animal fat are necessary for soap preparation.
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संबंधित प्रश्न
In the neighbourhood of your school, hard water required for an experiment is not available. Select from the following group of salts available in your school, a group each member of which, if dissolved in distilled water, will make it hard:
(a) Sodium chloride, calcium chloride
(b) Potassium chloride, sodium chloride
(c) Sodium chloride, magnesium chloride
(d) Calcium chloride, magnesium chloride
What change will you observe if you test soap with litmus paper (red and blue)?
A student took four test tubes P, Q, R and S and filled about 8 mL of distilled water in each. After that he dissolved an equal amount of Na2SO4 in P, K2SO4 in Q, CaSO4 in R and MgSO4 in S. On adding an equal amount of soap solution and shaking each test tube well, a good amount of lather will be obtained in the test tubes:
(a) P and Q
(b) P and R
(c) P, Q and S
(d) Q, R and S
Distinguish between esterfication and saponification reaction with the help of the chemical equations for each.
While studying the saponification reaction, what do you observe when you mix an equal amount of colourless vegetable oil and 20% aqueous solution of NaOH in a beaker?
(A) The colour of the mixture has become dark brown
(B) A brisk effervescence is taking place in the beaker
(C) The outer surface of the beaker has become hot
(D) The outer surface of the beaker has become cold
What change will you observe if you test soap solution with a litmus paper (red and blue)? Give reason for your observation.
Soap is a salt of ______ and sodium hydroxide.
The saponification of a fat or oil is done using _____ solution for hot process.
We are using ______ to remove strong stains on the clothes.
______ molecules go and join with dirt and oil in the cloth.
