Marchantia is an example of.

The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is

$A$ narrow parallel beam of light is incident paraxially on a solid transparent sphere of radius $r$ kept in air. What should be the refractive index if the beam is to be focused at the farther surface of the sphere?

The coefficient of $x^4$ in the expansion of $\frac{(1-3x)^2}{(1-2x)}$ is equal to

Blood pressure in the pulmonary artery is

The ascending limb of the Loop of Henle is permeable to which of the following?