JEE Main 2023 · 31 January · evening · Single correct · +4 / −1
Which of the following compounds are not used as disinfectants ?
A. Chloroxylenol
B. Bithional
C. Veronal
D. Prontosil
E. Terpineol
Choose the correct answer from the options given below :
- (a) A, B
- (b) C, D
- (c) B, D, E
- (d) A, B, E
Answer and solution
Answer (b) C, D
Solution
Chemistry ma’am · 3 steps
Sort each name into its drug class: Dettol and soap ingredients are germ killers, the other two are not.
- Find the germ killers. Antiseptics and disinfectants kill or stop microbes on skin or on surfaces. Their ingredients are the names you meet in Dettol and in medicated soaps.
Compound What it is Antiseptic or disinfectant? A. Chloroxylenol Main ingredient of Dettol Yes B. Bithional Added to medicated soaps Yes C. Veronal Barbiturate, a tranquilizer (hypnotic) No D. Prontosil Early sulpha antibiotic, works inside the body No E. Terpineol Other ingredient of Dettol, with chloroxylenol Yes - The odd two. Veronal acts on the nervous system to calm and induce sleep. Prontosil is converted in the body to sulphanilamide and fights infection from within. Neither is applied to skin or surfaces to kill germs.
- So. The compounds not used as disinfectants are C and D, which is option (b).
The idea to keep. Remember Dettol as chloroxylenol plus terpineol, and bithional as the soap antiseptic. Barbiturates like veronal are tranquilizers, and prontosil is a sulpha antibiotic.
Answer from the NTA final answer key. Solution by PrepWiser.