Which among the following detergents is non ionic in character
a. Sodiumlauryl sulphate
b. Pentaerythrity stearate
c. Cetyltrimethyl ammonium chloride
d. Sodium n- dodecyl benzene sulphonate
Ans. b
Explanatinon : Esters of high molecular mass formed by reactions between polyethylene glycol and mono carboxylic acid are non ionic detergents hence pentaerythrityl stearate is non ionic in character.
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dm-3 sucrose solution at 20 ° C (molar gas constant, R = 8.314 JK -1 mol -1 ; 1 dm-3 = 0.001 m3 ) a. 4870 Pa b. 4.87 Pa c. 0.00487 Pa d. 0.33 Pa Ans. a (17)
