Objective Questions on Soaps and Detergents:
Ques. Which of the following statement is true?
(a) Soaps and detergents both are used only in soft water
(b) Soaps and detergents both are used in soft as well as hard water
(c) Soap is used only in soft water while detergent can be used in soft as well as hard water
(d) Detergent is used only in soft water while soap is used in soft and hard water both
Ques. Which of the following compounds cannot remove grease from the clothes ?
(a) Gasoline
(b) Potassium palmitate
(c) Soap
(d) Potassium pentanoate
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Ques. Which of the following is an ordinary soap ?
(a) Sodium stearate
(b) Calcium stearate
(c) Sodium acetate
(d) Sodium benzoate
Ques. Which of the following statements is incorrect regarding linseed oil ?
(a) It is a drying oil
(b) It is used in paints and varnishes
(c) It is a vegetable oil
(d) It is a triglyceride of saturated fatty acids
Ques. Soaps and detergents are kept in the family of which of the following types of compounds ?
(a) Suface active
(b) Surface inactive
(c) Water soluble
(d) Water insoluble
Ques. Which of the following statement is wrong about detergent?
(a) They are used in soft water only
(b) They are used both in soft and hard water
(c) They decrease the surface tension of water
(d) They can be prepared from benzene sulphonic acid
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Ques. Soap is :
(a) Sodium stearate
(b) Calcium stearate
(c) Sodium acetate
(d) Sodium benzoate
Ques. Detergent is :
(a) Sodium stearate
(b) Sodium alkyl sulphonate
(c) Potassium butyrate
(d) Sodium oleate
Ques. Which statement, about fats, is incorrect ?
(a) They are ester derived from one alcohol only
(b) They are saturated and unsaturated carboxylic esters of glycol
(c) Liquid fats are often referred to as oils
(d) They are also called triglycerides
Ques. Bath soap is a mixture of :
(a) Potassium salts of higher fatty acids
(b) Sodium and calcium salts of higher fatty acids
(c) Potassium palmitate and sodium stearate
(d) Sodium salts of higher fatty acids
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Ques. Tributyrin is a fat present in butter. It is formed by the combination of butyric acid with :
(a) Glycerol
(b) Oleic acid
(c) Stearic acid
(d) Chloroform
Ques. In human beings and animlas, the oil and fats are hydrolysed by the enzymes :
(a) Diastase
(b) Zymase
(c) Lipase
(d) None
Ques. Which of the following is the main compent of bathing soap ?
(a) Caustic potash
(b) Glycerine
(c) Potassium glycolate
(d) Potassium stearate
Ques. Which of the following componds is insoluble in water ?
(a) Calcium salt of stearic acid
(b) Calcium salt of heptadecanesulphonic acid
(c) Magnesium salt of laurylsulphonic acid
(d) Potassium salt of palmitic acid
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Ques. Which of the following is not used in the preparation of a soap ?
(a) Palmitic acid
(b) Stearic acid
(c) Lauric acid
(d) Benzoic acid
Ques. In the production of soap by hot process, the liquor left after the separation of soap is called :
(a) Spent lye
(b) Sweet lye
(c) Both the above
(d) Soda lye
Ques. Soap is :
(a) Colloidal electrolyte
(b) Colloidal non–electrolyte
(c) Aerosol
(d) None of the above
Ques. Detergent can be used in :
(a) Soft water only
(b) Hard water only
(c) In both soft and hard water
(d) All the ionic solvents
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Ques. Fat is :
(a) Fatty acid
(b) Soap
(c) Glycerol
(d) Ester
Ques. The chemical name of washing soda:
(a) Sodium carbonate
(b) Sodium bicarbonate
(c) Sodium chloride
(d) Sodium sulphate
Ques. Soaps are sodium salts of which of the following
(a) Mineral acids
(b) Fatty acids
(c) Lactic acid
(d) Carbonic acid
Ques. The process of manufacturing of soap is called __
(a) Ion exchange
(b) Alphonation
(c) Saponification
(d) Steam distillation
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Ques. The advantage of detergents over soaps is
(a) Detergents are soluble in water
(b) Detergents could not give much lather
(c) Detergents give lather even with hard water
(d) Soaps give lather with only soft water
