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

Two spherical conductors $A$ and $B$ of radii $1 \ mm$ and $2 \ mm$ are separated by a distance of $5 \ cm$ and are uniformly charged. If the spheres are connected by a conducting wire,then in the equilibrium condition,the ratio of the magnitude of the electric fields at the surfaces of spheres $A$ and $B$ is-

If a $p-n$ junction is forward biased,then which of the following figures gives the correct direction of current inside the semiconductor?

In $Protista$ and $Monera$,the parent cell divides into two to give rise to new individuals.

Which of the following is the richest source of plant protein?

Two sides of a triangle are given by the roots of the equation $x^2-5x+6=0$ and the angle between the sides is $\frac{\pi}{3}$. Then,the perimeter of the triangle is