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NCERT Exemplar · Q13

Q.'Smack' is a drug obtained from the:

(a) latex of Papaver somniferum
(b) leaves of Cannabis sativa
(c) flowers of Dhatura
(d) fruits of Erythroxyl coca
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Smack is heroin, an opioid drug processed from the latex of the opium poppy (Papaver somniferum).

The question asks about the source of "smack" — the street name for heroin. To answer correctly, you need to know both the plant source and the specific part of that plant used.

Heroin belongs to the opioid family of drugs. These are substances that bind to opioid receptors in the brain, producing pain relief and euphoria, but also carrying a very high risk of addiction. The natural starting material for all opioids is the opium poppy, Papaver somniferum.

The key is that the drug is obtained from the latex of this plant. When the unripe seed pods of the opium poppy are scored (cut), a milky white fluid oozes out. This fluid is the latex. Once it dries, it becomes a brown, sticky gum — raw opium. From this raw opium, chemists extract morphine, and then through a simple chemical reaction (acetylation), they convert morphine into heroin, or "smack."

Let's look at why the other options are incorrect.

  • Cannabis sativa (option B) is the source of marijuana, hashish, and ganja. These are obtained from the leaves and flowering tops of the plant, not from a latex. The active compound is THC (tetrahydrocannabinol), which is a hallucinogen, not an opioid. …

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