Question

Which of the following possesses the highest melting point ?

• A. Chlorobenzene
• B. o-Dichlorobenzene
• C. m-Dichlorobenzene
• D. p-Dichlorobenzene

Answer 1

Answer: (D)

p-Dichlorobenzene

Answer 2

$p$-Dichlorobenzene fits closely in the crystal lattice due to its symmetrical structure. Therefore, it has highest melting point.