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The pair from the following paris having both compounds with net non-zero dipole moment is

1. 1, 4-Dichlorobenzene, 1,3-Dichlorobenzene
2. cis-butene, tr
3. CH 2 Cl 2 , CHCl 3
4. Benzene, anisidine

Correct answer: CH 2 Cl 2 , CHCl 3

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