Consider the following two statements about soap and detergent –
(i) Soap is natural while detergent is a synthetic product.
(ii) Both soap and detergent precipitate scum in hard water
(iii) Soap is sodium or potassium salt of fatty acids
Which of the above statements is (are) true?
Soap forms scum with hard water but detergent does not form any scum. Hence statement (ii) is incorrect.