The molecule that will have dipole moment:

2, 2-dimethyl propane

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cis-3-hexane

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2, 2, 3, 3-tetramethyl butane

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None of these

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Solution

The correct option is B cis-3-hexane
Dipole moment is vector quantity. Only unsymmetrical molecules have dipole moment.
2, 2, 3, 3 -Tetrammethyl butane
Only cis3-hexane is unsymmetrical molecule.
$∴$ It has dipole moment.

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