Among the following statements choose the correct
(A) Analgesics reduce or abolish pain without causing impairment of consciousness, or mental confusion.
(B) Tranquilizers are neurological inactive drugs.
(C) Morphine is an example of a non-narcotic analgesic.
(D) Disinfectants are applied to inanimate objects whereas antiseptics are applied to living tissues.
(E) Same substance can act as an antiseptic as well as a disinfectant by varying the concentration.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A, D, and E only
(A) Analgesics reduce or abolish pain without causing impairment of consciousness, or mental confusion. — True. This is how analgesics are defined; they also do not cause incoordination, paralysis or other disturbances of the nervous system.
(B) Tranquilizers are neurological inactive drugs. — False. Tranquilizers and analgesics are neurologically active drugs; they act on the message transfer mechanism from nerve to receptor.
(C) Morphine is an example of a non-narcotic analgesic. — False. Morphine and its derivatives are narcotic analgesics; aspirin and paracetamol are non-narcotic.
(D) Disinfectants are applied to inanimate objects whereas antiseptics are applied to living tissues. — True. Antiseptics are applied to wounds, cuts and the skin; disinfectants to floors, drains and instruments.
(E) Same substance can act as an antiseptic as well as a disinfectant by varying the concentration. — True. A 0.2 per cent solution of phenol is an antiseptic, while its 1 per cent solution is a disinfectant.
Note: This question is from the pre-rationalised NCERT book (2022-23). The topic is not there in the latest NCERT book (2026-27), and it is also out of the CUET 2026 syllabus.
NCERT (Pre-rationalised edition, 2022-23):
Antiseptics and Disinfectants – …
