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प्रश्न
Differentiate between Toilet soap and Laundry soap.
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उत्तर
| Toilet Soap | Laundry Soap |
| It has high-quality fats and oils as raw materials. | It has low-quality fats and oils as raw materials. |
| Expensive perfumes are added to these soaps. | Cheap perfumes are added to these soaps. |
| To avoid skin injuries, special care is taken to ensure that there is no free alkali. |
No such care is taken. |
| Fillers are absent. | Fillers are present. |
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संबंधित प्रश्न
Both soap and detergent are some type of salts. What is the difference between them?
List two problems that arise due to the use of detergents instead of soaps.
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
Would you be able to check if water is hard by using a detergent?
What change will you observe if you test soap solution with a litmus paper (red and blue)? Give reason for your observation.
Explain the process of preparation of soap in laboratory.
What is a detergent?
Which of the two is better for washing clothes when the water is hard: soap or detergent? Give reason for your answer.
What is the advantage of detergents over soaps for washing clothes?
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.
What is a soap?
Explain the cleansing action of soap. Draw diagrams to illustrate 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
The chemical which is not required for the preparation of soap in the laboratory is:
(a) vegetable oil
(b) baking soda
(c) caustic soda
(d) common salt
Why are soaps not suitable for washing clothes when the water is hard?
Give a scientific explanation.
Soap forms a precipitate in hard water.
Name three chemicals responsible for the surface activity of various detergents.
TFM in soaps represents ______ content in soap.
How does soap clean clothes?
