A student prepared the table given above on the effects of alcohol. In which row is the explanation wrong?
| Row | Sign seen in a drinker | Explanation given |
|---|---|---|
| P | More talkative, friendly and confident | Alcohol depresses the brain areas that control judgment and inhibition |
| Q | Speech less clear; memory falters | As alcohol is absorbed, it affects other areas of the brain |
| R | Unsteady walk; clumsy in simple activities | Motor difficulties increase |
| S | Blurred vision; trouble in hearing | Alcohol speeds up the functioning of the central nervous system |
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Row S
Option (1) Row P — Incorrect. Right explanation. Ethyl alcohol depresses the areas that control judgment and inhibition, so the person loses restraint and becomes talkative and confident.
Option (2) Row Q — Incorrect. Right explanation. As more alcohol is absorbed, it reaches other areas of the brain, so judgment, speech and memory suffer.
Option (3) Row R — Incorrect. Right explanation. An unsteady walk and clumsiness are examples of motor difficulties, which increase as drinking goes on.
Option (4) Row S — Correct. This explanation is wrong. Ethyl alcohol depresses or slows down the central nervous system; it does not speed it up. Blurred vision and poor hearing come from this slowing.
NCERT (2026-27):
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