Given below are two statements:
Assertion (A): o-Nitrophenol is more volatile than p-Nitrophenol.
Reason (R):  Intramolecular hydrogen bonding is present in o-nitrophenol while intermolecular H-bonding is present in p-nitrophenol.
 
1.  Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  van der Waal Force & Hydrogen Bonding |
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Level 1: 80%+
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Which of the following compounds shows the strongest hydrogen bonding?

1. HCl

2. H2O

3. HI

4. H2S

Subtopic:  van der Waal Force & Hydrogen Bonding |
 84%
Level 1: 80%+
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Which molecule among the following exhibits the least strength in its overall intermolecular forces?
[atomic numbers: H = 1; C = 6; N = 7; O = 8; F = 9]

1. H2O
2. CH4
3. HF
4. NH3
Subtopic:  van der Waal Force & Hydrogen Bonding |
 81%
Level 1: 80%+
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