The compound formed on heating chlorobenzene with chloral in the presence of concentrated sulphuric acid is:

Identify the mixture that shows positive deviation from Raoult's law.

$A$ hoop of radius $r$ and mass $m$ rotating with an angular velocity $\omega_0$ is placed on a rough horizontal surface. The initial velocity of the centre of the hoop is zero. What will be the velocity of the centre of the hoop when it ceases to slip?

Two concentric hollow spherical shells have radii $r$ and $R$ $(R \gg r)$. $A$ charge $Q$ is distributed on them such that the surface charge densities are equal. The electric potential at the centre is

Which one of the following hormones,though synthesised elsewhere,is stored and released by the master gland?

Two circular coils can be arranged in any of the three situations shown in the figure. Their mutual inductance will be