Compounds with antiseptic properties are

(a) CHCl

(b) CHI₃

(c) Boric acid  

(d) 0.3 ppm aqueous solution of Cl₂

This is a multiple choice answer as classified in NCERT Exemplar

(b, c)

(a) CHCl₃  (chloroform) was used as an anaesthesia in surgery but now it is used in the production of the Freon refrigerant R-22.

(b) Iodoform (CFH₃) produces iodine on coming in contact with skin, so it is used as an antiseptic