MCQ
15 g of a solute in 100 g of water makes a solution to freeze at $-1^{\circ} C$. $30 g$ of a solute in 100 g of water will give a depression in f.pt. equal to:
- A$0.5^{\circ} C$
- B$2^{\circ} C$
- C$-2^{\circ} C$
- D$1^{\circ} C$
✓
Answer
B. $2^{\circ} C$
Explanation:
$\Delta T \propto w$, if other factors are constant. Thus $\frac{\Delta T}{1}=\frac{30}{15}$
$\therefore \Delta T=2$
Explanation:
$\Delta T \propto w$, if other factors are constant. Thus $\frac{\Delta T}{1}=\frac{30}{15}$
$\therefore \Delta T=2$
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