Flatworms are:

Statins, used as blood cholesterol-lowering agents, are extracted from:

All of the following substances react with water. Which pair among them will produce the same gaseous product upon reaction with water?

For skywave propagation of a $10\, MHz$ signal,what should be the minimum electron density in the ionosphere?

Electric field at a point varies as $r^0$ for

Two wooden blocks of masses $M$ and $m$ are placed on a smooth horizontal surface as shown in the figure. If a force $P$ is applied to the system as shown in the figure such that the mass $m$ remains stationary with respect to the block of mass $M$, then the magnitude of the force $P$ is