By spinning eggs on a table top, how will you distinguish an hard boiled egg from a raw egg?

Explanation

To distinguish between a hard boiled egg. and a raw egg, we spin each on a table top. The egg which spins at a slower rate shall be a raw egg. This is because in a raw egg, liquid matter inside tries to get away from the axis of rotation. Therefore, its moment of inertia 'l' increases. As `tau = I alpha` constant, therefore, a decreases i.e., raw egg will spin with smaller angular acceleration.