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  4. The dipole moment of CH3F is greater than that of CH3Cl.

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Q. The dipole moment of $CH_3F$ is greater than that of $CH_3Cl$.

IIT JEEIIT JEE 1993

Solution:

Dipole moment ($\mu$ ) = q.d
Since electronegativity of F and Cl are very close, it is the intemuclear distance (d) that decides dipole moment here.
Hence, C - Cl bond has greater dipole moment the C-F bond.