On heating a liquid of coefficient of cubical expansion $\gamma$ in a container having coefficient of linear expansion $\gamma / 3$,the level of liquid in the container will

What is the primary purpose of data entry in the context of mathematical research?

Phosgene is formed slowly from which one of the following on exposure to air and sunlight?

$A$ particle of mass $4 M$ which is initially at rest explodes into three pieces of masses $M$,$M$ and $2 M$. The equal masses move along $X$ and $Y$-axes with velocities $4 ~ms^{-1}$ and $6 ~ms^{-1}$,respectively. The magnitude of the velocity of the heavier mass is

If $R$ is an equivalence relation on a set $A$,then $R^{-1}$ is

The element with atomic number $12$ belongs to ......... group and ......... period.