Question:
Which of the following statements is not correct?
Which of the following statements is not correct?
Show Hint
Methanol and ethanol are soluble in water, but higher alcohols like octanol are insoluble in water.
Updated On: Apr 22, 2026
- All alcohols are miscible with water
- Only lower alcohols are miscible with water
- All alcohols are not poisonous
- Methanol is poisonous
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The Correct Option is A
Solution and Explanation
Step 1: Analyzing the given statements.
- (1) All alcohols are miscible with water: This statement is incorrect. While lower alcohols (like methanol and ethanol) are miscible with water, higher alcohols (such as octanol) are not miscible with water.
- (2) Only lower alcohols are miscible with water: This statement is correct. The solubility decreases as the molecular weight of the alcohol increases.
- (3) All alcohols are not poisonous: This statement is correct. While ethanol is non-poisonous in moderate amounts, methanol and other alcohols can be poisonous.
- (4) Methanol is poisonous: This statement is correct. Methanol is indeed toxic and can cause blindness or death if ingested.
Step 2: Conclusion.
The correct answer is (1) All alcohols are miscible with water.
- (1) All alcohols are miscible with water: This statement is incorrect. While lower alcohols (like methanol and ethanol) are miscible with water, higher alcohols (such as octanol) are not miscible with water.
- (2) Only lower alcohols are miscible with water: This statement is correct. The solubility decreases as the molecular weight of the alcohol increases.
- (3) All alcohols are not poisonous: This statement is correct. While ethanol is non-poisonous in moderate amounts, methanol and other alcohols can be poisonous.
- (4) Methanol is poisonous: This statement is correct. Methanol is indeed toxic and can cause blindness or death if ingested.
Step 2: Conclusion.
The correct answer is (1) All alcohols are miscible with water.
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