Which molecule does not show zero dipole moment [RPET 1997, 99]

1.	Which molecule does not show zero dipole moment [RPET 1997, 99]
A.	\[B{{F}_{3}}\]
B.	\[N{{H}_{3}}\]
C.	\[CC{{l}_{4}}\]
D.	\[C{{H}_{4}}\]
Answer» C. \[CC{{l}_{4}}\]

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Which molecule does not show zero dipole moment [RPET 1997, 99]

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