MCQ Solution: Thermodynamics
The coefficient of volume expansion of glycerin is 34 ´ 10–5 per °C. The fractional change in its density for a 30°C rise in temperature is:
1) 2.02 ´ 10–2
2) 1.86 ´ 10–2
3) 1.02 ´ 10–2
4) 0.86 ´ 10–2
Solution
$$\displaystyle\gamma=\frac{1}{{\Delta{T}}}{\left(\frac{{\Delta{V}}}{{{V}}}\right)}\Rightarrow\frac{{\Delta{V}}}{{{V}}}=\gamma\times\Delta{T}$$