Match List I with List II LIST I (Hazardous substance) LIST II (Specific…
2023
Match List I with List II
LIST I (Hazardous substance) | LIST II (Specific effect) |
|---|---|
A. Neurotoxins | I. Substances that cause cancer. |
B. Mutagens | II. Substances that attack nerve cells. |
C. Teratogens | III. Substances that damage or alter genetic material (DNA) in cells. |
D. Carcinogens | IV. Substances that cause abnormality during embryonic growth and development. |
Choose the correct answer from the options given below:
Answer: C. A-II, B-III, C-IV, D-I — CONCEPTA toxicological classification names the biological target or developmental outcome produced by a hazardous agent. The defining effect—not the agent’s…
- A.
A-I, B-IV, C-II, D-III
- B.
A-IV, B-I, C-III, D-II
- C.
A-II, B-III, C-IV, D-I
- D.
A-III, B-II, C-I, D-IV
Show answer & explanation
Correct answer: C
CONCEPT
A toxicological classification names the biological target or developmental outcome produced by a hazardous agent. The defining effect—not the agent’s source or route of exposure—controls the classification.
Neurotoxicity concerns the nervous system, mutagenicity concerns genetic material, teratogenicity concerns embryonic or fetal development, and carcinogenicity concerns cancer formation.
APPLICATION
Hazardous substance | Defining effect | Match |
|---|---|---|
Neurotoxins | Attack nerve cells or disrupt nervous-system function. | A-II |
Mutagens | Damage or alter cellular genetic material (DNA). | B-III |
Teratogens | Cause abnormalities during embryonic growth and development. | C-IV |
Carcinogens | Cause or promote cancer. | D-I |
CROSS-CHECK / CONTRAST
The prefix neuro- points to nerves, which distinguishes neurotoxins from agents classified by DNA, developmental, or cancer effects.
A mutation is a change in genetic material, linking mutagens with DNA alteration rather than developmental abnormality.
Teratogenic effects occur during prenatal development; carcinogenic effects are identified by cancer causation or promotion.
Therefore, the correct mapping is A-II, B-III, C-IV, D-I.