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The correct statement/s about Hydrogen bonding is/are: A. Hydrogen bonding exists when H is covalently bonded to the highly electro negative atom. B. Intermolecular H bonding is present in o-nitro phenol C. Intramolecular H bonding is present in HF. D. The magnitude of H bonding depends on the physical state of the compound. E. H-bonding has powerful effect on the structure and properties of compounds. Choose the correct answer from the options given below:

1. (1) A only
2. (2) A, D, E only
3. (3) A, B, D only
4. (4) A, B, C only

Correct answer: (2) A, D, E only

Solution

A, D, E are correct. B is false because o-nitrophenol shows INTRAmolecular H-bonding (the chelate ring), and C is false because HF exhibits INTERmolecular H-bonding, not intramolecular. So the right set is A, D, E only.

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