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प्रश्न
The saponification of a fat or oil is done using _____ solution for hot process.
पर्याय
Ammonium hydroxide
Sodium hydroxide
Hydrochloric acid
Sodium chloride
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उत्तर
The saponification of a fat or oil is done using hydrochloric acid solution for the hot process.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
The sodium salt of a long chain fatty acid is called .............
State one advantage of soaps over detergent.
Why is common salt (sodium chloride) added during the preparation of soap?
Which of the two is better for washing clothes when the water is hard: soap or detergent? Give reason for your answer.
In a soap micelle, the soap molecules are arranged radially with:
(a) ionic ends directed towards the centre and hydrocarbon ends directed outwards
(b) hydrocarbon ends directed towards the centre and ionic ends directed outwards
(c) both ionic ends and hydrocarbon ends directed toward the centre
(d) both hydrocarbon ends and ionic ends directed outwards
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
Distinguish between esterification and saponification reactions of organic compounds.
Explain why soap cannot be used in hard water.
Arrange the following statements in correct sequence
- Pour that solution into an empty matchbox, soap can be obtained after drying.
- Take the necessary quantity of water in a jar.
- Then add coconut oil drop by drop and stir it well.
- Add concentrated sodium hydroxide in the jar and allow it to cool.
- Try this soap to wash your hand kerchief.
- Cover your work area with old newspaper.
______ molecules go and join with dirt and oil in the cloth.
