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प्रश्न
Out of o-and p-dibromobenzene which one has higher melting point and why?
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उत्तर
p-Dibromobenzenc has higher melting point than its o-isomer.
It is due to symmetry of p-isomer which fits in crystal lattice better than the o-isomer.
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\ce{CH3}\phantom{..................}\\
\backslash\phantom{...........}\\
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/\phantom{.............}\\
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