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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
Hard water is not available for an experiment. Some salts are given below :
(I) Sodium chloride
(II) Sodium sulphate
(III) Calcium chloride
(IV) Calcium sulphate
(V) Potassium chloride
(VI) Magnesium sulphate
Select from the following group of these salts, each member of which may be dissolved in water to make it hard.
(A) I, II, V
(B) I, III, V
(C) III, IV, VI
(D) II, IV, VI
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
State one use of saponification process.
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.
Fill in the following blank with suitable word:
The sodium salt of a long chain fatty acid is called .............
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? Also state one disadvantage.
Describe the structure of a soap molecule with the help of a diagram.
The soap molecule has a ______.
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 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
A student is testing water to know which is best for cleansing purposes with soaps. He would find that the cleansing action of soaps is best when he uses water obtained from
(a) rain
(b) tap
(c) hand pump
(d) pond
A student takes 4 mL of distilled water in each of four test tubes I, II, III and IV, and then dissolves an equal amount of four different salts namely NaCl in I, CaCl2 in II, MgCl2 in III and KCl in IV. He then adds 8 drops of the given soap solution to each test tube and shakes the contents of the test tube 10 times. In which test tubes will enough lather (foam) be formed ?
(A) I and II
(B) II and III
(C) I and IV
(D) III and IV
What are detergents chemically? List two merits and two demerits of using detergents for cleansing. State the reason for the suitability of detergents for washing, event in the case of water having calcium and magnesium ions.
Give a scientific explanation.
Soap forms a precipitate in hard water.
Soaps are ester of which type of acids?
Analogy:
Used to join components: Adhesives:: Clean the body ______.
______ to remove strong strains on the clothes.
Why do soaps not work effectively in hard water?
