Smack is chemically ____A_____, which is a white, odourless, and crystalline substance. It is obtained through the process of _____B_____. Here A and B refer to:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A–diacetylmorphine; B–acetylation of morphine
Heroin, commonly called smack, is an opioid. Chemically it is diacetylmorphine, a white, odourless, bitter crystalline compound. It is made by acetylation of morphine, and morphine itself is extracted from the latex of the poppy plant.
Option (1) A–diacetylmorphine; B–acetylation of morphine — Correct. Both blanks are right: A is diacetylmorphine and B is acetylation of morphine.
Option (2) A–morphine; B–acetylation of hashish — Incorrect. Morphine is the starting material, not smack itself. Hashish is a product of Cannabis, not a source of heroin.
Option (3) A–stimulant; B–acetylation of morphine — Incorrect. B is right, but smack is a depressant that slows down body functions, not a stimulant. Cocaine is the drug with a stimulating action on the central nervous system.
Option (4) A–hallucinogen; B–acetylation of hashish — Incorrect. Both blanks are wrong. Smack is not a hallucinogen, and it is not made from hashish.
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). Generally taken by snorting and injection, heroin is a depressant and slows down body functions.”