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प्रश्न
The chemical mostly used in the preparation of most of the soaps we use is
(a) Sodium chloride
(b) Potassium hydroxide
(c) Sodium hydroxide
(a) Potassium chloride
उत्तर
Sodium hydroxide
Hence, the correct answer is option (c).
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संबंधित प्रश्न
List two problems that arise due to the use of detergents instead of soaps.
Fill in the following blank with suitable word:
The sodium salt of a long chain fatty acid is called .............
What change will you observe if you test soap solution with a litmus paper (red and blue)? Give reason for your observation.
What is the advantage of detergents over soaps for washing clothes? Also state one disadvantage.
What is saponification? Write the chemical equation of the reaction involved in this process. Name all the substances which take part in this process and also those which are formed.
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.
How will you check with the help of soap powder whether water is hard?
What are the differences between Bath soap and soap for washing clothes?
Explain why synthetic detergents are superior to soap.
Why do soaps not work effectively in hard water?
