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प्रश्न
What is a detergent? Name one detergent.
उत्तर
Detergent, a sodium salt of a long chain benzene sulphonic acid, is a cleansing agent. It has cleansing properties in water. A detergent has two parts, a large non-ionic hydrocarbon group and an ionic group such as sulphonate group SO3-Na+. Name of a detergent is sodium n-dodecyl benzene sulphonate.
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संबंधित प्रश्न
Describe in brief the cleansing action of soap.
A student requires hard water for an experiment in his laboratory which is not available in the neighbouring area. In the laboratory there are some salts, which when dissolved in distilled water can convert it into hard water. Select from the following groups of salts, a group, each salt of which when dissolved in distilled water will make it hard.
(A) Sodium chloride, Potassium chloride
(B) Sodium sulphate, Potassium sulphate
(C) Sodium sulphate, Calcium sulphate
(D) Calcium sulphate, Calcium chloride
State one advantage of soaps over detergent.
Explain the process of preparation of soap in laboratory.
What is the advantage of detergents over soaps for washing clothes? Also state one disadvantage.
What is a soap? Name one soap.
Give the reason of formation of scum when soaps are used with hard water.
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
Give a scientific explanation.
Soap forms a precipitate in hard water.
TFM in soaps represents ______ content in soap.
