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प्रश्न
Differentiate between:
Detergents and Soaps.
उत्तर
Differentiate between: Detergents and soaps
| Detergents | Soaps | ||
| i. | Detergents are generally ammonium or sulphonate salts of long-chain carboxylic acids. | i. | Soaps are sodium or potassium salts of long-chain carboxylic acids. |
| ii. | Detergents have a strong cleansing action. | ii. | Soaps have relatively weak cleansing action. |
| iii. | Oils or fats are not used in their manufacture, usually, petrochemicals are used to produce detergents. | iii. | Vegetable oils or animal fats are used along with hydroxide of sodium or potassium to manufacture soaps. |
| iv. | They function well in hard or soft water. | iv. | They do not work well in had water but work well in soft water. |
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संबंधित प्रश्न
Differentiate between Toilet soap and Laundry soap.
Both soap and detergent are some type of salts. What is the difference between them?
In a locality, hard water, required for an experiment, is not available. However, the following salts are available in the school laboratory:
1. Sodium sulphate
2. Calcium sulphate
3. Magnesium chloride
4. Sodium chloride
5. Calcium chloride
6. Potassium sulphate
Which of the above salts may be dissolved in water to obtain hard water for the experiment?
(A) 2, 3 and 5
(B) 1, 2 and 5
(C) 1, 2, 4 and 6
(D) 3 and 5 only
People use a variety of methods to wash clothes. Usually after adding the soap, they ‘beat’ the clothes on a stone, or beat it with a paddle, scrub with a brush or the mixture is agitated in a washing machine. Why is agitation necessary to get clean clothes?
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
Fill in the following blank with suitable word:
The sodium salt of a long chain fatty acid is called .............
Give any two differences between soaps and detergents.
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 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.
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.
How will you check with the help of soap powder whether water is hard?
Explain why soap cannot be used in hard water.
What are the two different types of molecules found in the soap?
TFM in soaps represents ______ content in soap.
How does soap clean clothes?
The soap molecule has a
Why do soaps not work effectively in hard water?
