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Question

Match the detergents given in Column I with their uses given in Column II.

Column I Column II
(i) (a) Dishwashing Powder
(ii) (b) Laundary soap
(iii) C17H35COONa++Na2CO3+Rosin (c) Hair conditioners
(iv) CH3(CH2)16COO(CH2CH2O)12CH2CH2OH (d) Toothpaste



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Solution

Column I Column II
(i) (c) Hair conditioners
(ii) (d) Toothpaste
(iii) C17H35COONa++Na2CO3+Rosin (b) Laundary soap
(iv) CH3(CH2)16COO(CH2CH2O)12CH2CH2OH (a) Dishwashing Powder


(i)

Hair shampoos/conditioners are made up of cationic detergents. These are quaternary ammonium salts of amines with chlorides, bromides, or acetates, e.g., cetyltrimethylammonium bromide.


(ii)

Anionic detergents are used in toothpaste e.g. sodium dodecylbenzenesulphonate. It can be prepared as follows:






(iii) C17H35COONa++Na2CO3+Rosin

Laundry soaps contain fillers like Sodium Rosinate, Sodium silicate, Borax, and Sodium carbonate. Sodium rosinate makes the soap lather well.

(iii)C17H35COONa++Na2CO3+Rosin

(b) Laundry soaps

(iv) CH3(CH2)16COO(CH2CH2O)nCH2CH2OH

Dishwashing powders are non-ionic detergents, and it can be prepared as:

CH3(CH2)16COOH+HO(CH2CH2O)nCH2CH2OHH2O−−−CH3(CH2)16COO(CH2CH2O)nCH2CH2OH
Stearic acid Polyethylene glycol Nonionic detergent

(iv) CH3(CH2)16COO(CH2CH2O)nCH2CH2OH
Dishwashing powder


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