Choose the odd one out and write the category for the remaining terms.

(a) Carbolic acid, Formalin, Benzoic acid, Boric acid

(b) Mercurochrome, Cresol, Phenol, Bordeaux mixture

(c) ATP, DPT, BCG, TAB

(d) Saliva, Sweat, Skin, Tears

(e) Chloromycetin, Streptomyces, Streptomycin, Aureomycin

(a) Odd one out— Formalin (disinfectant)
Carbolic acid, Benzoic acid, Boric acid — antiseptic

(b) Odd one out— Mercurochrome (antiseptic)
Cresol, Phenol, Bordeaux mixture — disinfectant

(c) Odd one out— ATP (energy providing compound formed during respiration)
DPT, BCG, TAB — Vaccine

(d) Odd one out— Skin
Saliva, Sweat, Tears — germ killing secretions

(e) Odd one out— Streptomyces (bacterium)
Chloromycetin, Streptomycin, Aureomycin — antibiotics