$74.5 \ g$ of a metallic chloride contain $35.5 \ g$ of chlorine. The equivalent weight of the metal is

To which group does the plant shown in the given figure belong?

$A$ motor of power $P_0$ is used to deliver water at a certain rate through a given horizontal pipe. To increase the rate of flow of water through the same pipe $n$ times,the power of the motor is increased to $P_1$. The ratio of $P_1$ to $P_0$ is

Three identical bodies of equal mass $M$ each are moving along a circle of radius $R$ under the action of their mutual gravitational attraction. The speed of each body is

The tension $T$ in the string shown in the figure is:

Catadromous fish migrates from