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Chemistry Hard PMS Uploaded: 04 Sep 2026

Which of the following is a nonpolar molecule?

  • A Ammonia (NH3)
  • B Carbon dioxide (CO2)
  • C Hydrogen chloride (HCl)
  • D Water (H2O)
Correct Answer: Option B — Carbon dioxide (CO2)
Explanation:
Carbon dioxide is nonpolar despite having polar C=O bonds because its linear symmetric shape causes the individual bond dipoles to cancel each other out, resulting in no net molecular dipole moment.
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