MCQ
Which substance has the lowest boiling point?
- ACH3CH2CH2CH2OCH3
- BCH3CH2OCH2CH3
- CCH3CH2CH2CH3
- DCH3CH2C=OCH3
✓
Answer
- CH3CH2CH2CH3
Explanation:
CH3CH2CH2CH3 (n−butane) has the lowest boiling point as it has lowest molecular weight and is non polar. It has weakest intramolecular forces of attraction.
All others are polar compounds and so has dipole-dipole inbteraction.
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