Question

Match the following:

• A. (A) $\rightarrow$ (iii);
• B. $\rightarrow$ (iv);
• C. $\rightarrow$ (i);
• D. $\rightarrow$ (ii)
  (B) (A) $\rightarrow$ (ii); (B) $\rightarrow$ (i); (C) $\rightarrow$ (iv); (D) $\rightarrow$ (iii)
  (C) (A) $\rightarrow$ (iii); (B) $\rightarrow$ (iv); (C) $\rightarrow$ (i); (D) $\rightarrow$ (ii)
  (D) (A) $\rightarrow$ (i); (B) $\rightarrow$ (ii); (C) $\rightarrow$ (iii); (D) $\rightarrow$ (iv)

Hint:

To quickly solve matching questions on drugs in the exam, look for the most distinct and easily recognizable botanical name.
For example, matching Coca directly to Erythroxylum coca (C $\rightarrow$ iv) immediately eliminates options (A), (C), and (D), saving valuable time.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
This question belongs to Biology, specifically the chapter "Human Health and Diseases" in the NCERT Class 12 curriculum, focusing on commonly abused drugs, their chemical compositions, and their botanical sources.
We are required to correctly match the drugs in List I with their botanical names or chemical descriptions in List II.

Step 2: Key Concept or Approach:
We match each drug in List I with its biological source or chemical name based on standard biochemical classifications:
1. Heroin is chemically diacetylmorphine, a white, odorless, bitter crystalline compound obtained by the acetylation of morphine.
2. Cannabinoids are active chemicals obtained from the inflorescences of the hemp plant, Cannabis sativa.
3. Coca alkaloid (cocaine) is extracted from the leaves of the South American shrub, Erythroxylum coca.
4. The poppy plant, which is the source of opiates like morphine, is scientifically known as Papaver somniferum.

Step 3: Detailed Explanation:

• Let us systematically align the pairs:
-

(A) Heroin: Chemically, it is diacetylmorphine, which is represented by option (ii). Thus, (A) $\rightarrow$ (ii).
-

(B) Natural cannabinoids: These are derived from the inflorescences of the plant Cannabis sativa, represented by option (i). Thus, (B) $\rightarrow$ (i).
-

(C) Coca: This refers to the plant source of cocaine, which is Erythroxylum coca, represented by option (iv). Thus, (C) $\rightarrow$ (iv).
-

(D) Poppy plant: This is the common name for Papaver somniferum, represented by option (iii). Thus, (D) $\rightarrow$ (iii).

• This matches perfectly with the pattern: (A) $\rightarrow$ (ii); (B) $\rightarrow$ (i); (C) $\rightarrow$ (iv); (D) $\rightarrow$ (iii).

• Looking at the options provided, Option (B) contains this precise matching sequence.



Step 4: Final Answer:
The correct matching sequence is Option (B).