Dishwashing soaps are synthetic detergents. What is their chemical nature ?
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Depending upon the chemical nature of the template (DNA or RNA) and the nature of
There are two different types of nucleic acid polymerases. DNA-dependent DNA polymerases DNA-dependent RNA polymerases The DNA-dependent DNA polymerases use a DNA template for synthesizing a new strand of DNA, whereas DNA-dependent RNA...
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If water contains dissolved calcium hydrogen carbonate, out of soaps and synthetic
Synthetic detergents are preferred for cleaning clothes. When soaps are dissolved in water containing calcium ions, these ions form insoluble salts that are of no further use. However, when synthetic detergents...
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Why synthetic detergents are preferred over soaps for use in washing machines ?
[Hint : They work well even with hard water and not form any scum.]
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What do you mean by non-biodegradable detergents ? How can we make biodegradable detergents ?
[Hint : Detergents which cannot be degraded by nature. Biodegradable detergents can be prepared by minimazing the branching of the hydrocarbon chain, as unbranched chains can be biodegraded.]
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Write the structures of soaps obtained by the hydrolysis of the following fats : (i) (C15H31COO)3C3H5 Glyceryl palmitate
[Hint : (i) C15H31COO-Na+ (ii) C17H33COO-Na+]
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Explain the following terms with suitable examples : (i) Cationic detergents (ii) Anionic detergents (iii) Non-ionic detergents
[Hint : (i) Those in which cationic part of the molecule is involved in cleansing action. E.g., cetyltrimethyl ammonium bromide. (ii) Those in which anionic part of the molecule is involved...
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Synthetic detergents are made from
(B) Sodium salt of benzene sulphonic acid Synthetic detergents are made from sodium salt of benezene sulphonic acid
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Soaps are prepared by the alkaline hydrolysis of
The correct answer is (C) esters
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State reasons for the following occurrences: (i) Soaps do not do the cleansing in hard water.
(i) This is because the Ca2+ and Mg2+ ions present in hard water get precipitated as calcium and magnesium soap which being insoluble stick to the clothes as gummy mass. (ii)...
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Answer the following questions : (i) Why do soaps not work in hard water ?
(i) Hard water contains calcium and magnesium salts. In hard water, soaps get precipitated as calcium and magnesium soaps which being insoluble stick to the clothes as gummy mass. (ii) Chloroxylenol...
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