question_answer

Which of the following statements are false about soaps and detergents?

(i) Soaps are water soluble while detergents are not.

(ii) Soaps are non-biodegradable while detergents are biodegradable.

(iii) Hardness of water is due to presence of \[Ca\] and \[Mg\] salts which form scum with soap.

(iv) The polar group in soaps is \[COONa\].

A) (i), (ii) and (iii) only

B) (i) and (ii) only

C) (iii) and (iv) only

D) (i), (ii) and (iv) only