Question

A flask of volume `10^3` cc is completely filled with mercury at `0^@C` The coefficient of cubical expansion of mercury is `180xx10^(-6)//^(@)C` and heat of glass is `40xx10^(-6)//^(@)C`. If the flask in now placed in boiling water at `100^@C` how much mercury will overflow?
A. 7 cc
B. 14 cc
C. 21 cc
D. 28cc

Answer 1

Correct Answer - D
Increse in volume of flask
`=40xx10^-6xx10^3xx10^2=4cc`
Increase in volume of mercury
`=180xx10^-6xx10^3xx10^2=18cc`
Volume of mercury overflow
`=18-4=14 c c`