Identify the drug shown below in the diagram

The correct answer is Option (4) → Morphine

The figure is the chemical structure of morphine, as shown in the textbook. It has two OH groups and an N–CH₃ group on a ring system.

Option (1) Cocaine — Incorrect. Cocaine is a coca alkaloid from the coca plant of South America. It acts on the transport of the neurotransmitter dopamine and is a stimulant.

Option (2) Heroin — Incorrect. Heroin is diacetylmorphine, made by acetylating morphine. In heroin the two OH groups of morphine carry acetyl groups, so its structure is not the one shown.

Option (3) Cannabinoid — Incorrect. Cannabinoids come from the inflorescences of Cannabis sativa (marijuana, hashish, charas, ganja). They act on the cannabinoid receptors of the brain.

Option (4) Morphine — Correct. Morphine is an opioid extracted from the latex of the poppy plant. It is a strong sedative and painkiller.

NCERT Extract:
Drugs and Alcohol Abuse – “Opioids are the drugs, which bind to specific opioid receptors present in our central nervous system and gastrointestinal tract. Heroin (Figure 7.7), commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine (Figure 7.7), which is extracted from the latex of poppy plant Papaver somniferum (Figure 7.8).”