Question:
In which of the following compounds intramolecular hydrogen bonding is present?
In which of the following compounds intramolecular hydrogen bonding is present?
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Intramolecular hydrogen bonding occurs when a hydrogen bond is formed within the same molecule.
Updated On: Jan 27, 2026
- Ethanol
- o-nitrophenol
- Water
- Ammonia
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The Correct Option is B
Solution and Explanation
Step 1: Understanding intramolecular hydrogen bonding.
Intramolecular hydrogen bonding occurs when a molecule contains a hydrogen bond between two atoms within the same molecule.
Step 2: Analyzing the options.
(A) Ethanol: Ethanol has intermolecular hydrogen bonding, but not intramolecular.
(B) o-nitrophenol: Correct — o-nitrophenol has intramolecular hydrogen bonding between the hydroxyl group and the nitro group.
(C) Water: Water has intermolecular hydrogen bonding, not intramolecular.
(D) Ammonia: Ammonia also has intermolecular hydrogen bonding, not intramolecular.
Step 3: Conclusion.
The correct answer is (B) o-nitrophenol, as it exhibits intramolecular hydrogen bonding.
Intramolecular hydrogen bonding occurs when a molecule contains a hydrogen bond between two atoms within the same molecule.
Step 2: Analyzing the options.
(A) Ethanol: Ethanol has intermolecular hydrogen bonding, but not intramolecular.
(B) o-nitrophenol: Correct — o-nitrophenol has intramolecular hydrogen bonding between the hydroxyl group and the nitro group.
(C) Water: Water has intermolecular hydrogen bonding, not intramolecular.
(D) Ammonia: Ammonia also has intermolecular hydrogen bonding, not intramolecular.
Step 3: Conclusion.
The correct answer is (B) o-nitrophenol, as it exhibits intramolecular hydrogen bonding.
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