Correct observation for the three $0.1\,\mathrm{M}$ solutions shown: I = urea, II = $\mathrm{NaCl}$, III = $\mathrm{CaCl_{2}}$.
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- AVapour pressure of solution I is lowest
- BRelative lowering of vapour pressure is maximum in III
- CFreezing point is maximum for III
- DBoiling point is minimum for II
✓ Correct answer: B
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