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प्रश्न
Mention the essential material (chemicals) to prepare soap in the laboratory. Describe in brief the test of determining the nature (acidic/alkaline) of the reaction mixture of saponification reaction.
उत्तर
The essential chemicals required to prepare soap in the laboratory are: Oil/fat/fatty acids and sodium hydroxide solution.
In order to determine the nature of the reaction mixture of saponification reaction, we dip red litmus paper into it which will turn blue after a while indicating that it is a basic/alkaline reaction mixture.
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संबंधित प्रश्न
State one use of saponification process.
Fill in the following blank with suitable word:
The sodium salt of a long chain fatty acid is called .............
Use of synthetic detergents causes pollution of water.
What is a soap? Name one soap.
Consider the following oils :
(I) Mobil oil
(II) Castor oil
(III) Turpentine oil
(IV) Kerosene
(V) Mustard oil
(VI) Coconut oil
Which of these can be used for prepartion of soap?
(a) I, II, III, VI
(b) II, V, VI
(c) II, III, V, VI
(d) II, III, VI
What is a soap?
Answer the following question.
In three test tubes A, B, and C, three different liquids namely, distilled water, underground water and distilled water in which a pinch of calcium sulphate is dissolved, respectively are taken. Equal amount of soap Answer is added to each test tube and the contents are shaken. In which test tube will the length of the foam (lather) be longest? Justify your answer.
Explain why synthetic detergents are superior to soap.
TFM in soaps represents ______ content in soap.
______ are substances which can undergo chemical changes to produce certain materials.
