Same chapter3 marksDifficulty: Medium
What is hydrogen bonding? Explain why water has a much higher boiling point than hydrogen sulphide.
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3 marksDifficulty: Medium
Explain why carbon dioxide is non-polar although each C=O bond is polar.
Original Khojo Papers practice question — not from a past board paper.
Answer
The molecule is linear, so the two bond dipoles are equal in magnitude and exactly opposite in direction and cancel completely, leaving no net dipole moment. In water, where the molecule is bent, the two bond dipoles do not cancel and the molecule is polar.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Molecular shape, not bond polarity alone, decides whether a molecule is polar.
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