Statement 1: O-nitrophenol is steam volatile due to H- bonding
Statement 2: O-nitrophenol has higher melting point due to H-Bonding
(a) Both statements are true
(b) S1 is is true, S2 is false
(c) S1 is false, S2 is true
(d) Both are false
Answer: (b) S1 is is true, S2 is false
Solution: O-nitrophenol has intramolecular H-bonding while p-nitrophenol has intermolecular H-bonding. Due to this, molecules of o-nitrophenol are weakly held together and therefore steam volatile.
O – nitrophenol’s melting point = 216°C
P – nitrophenol’s melting point = 279°C