$A$ storehouse of collected plant specimens that are dried,pressed,and preserved on sheets is known as .........

Which one of the following conditions is incorrect for a well-behaved wave function $(\psi)$?

An integrating factor of the differential equation $(1-x^2) \frac{dy}{dx} + xy = \frac{x^4}{(1+x^5)} (\sqrt{1-x^2})^3$ is

The oxidation state and covalency of $Al$ in $[AlCl(H_2O)_5]^{2+}$ are respectively

$A$ proton, a deuteron, and an $\alpha$-particle having the same momentum enter a region of uniform electric field between the parallel plates of a capacitor. The electric field is perpendicular to the initial path of the particles. The ratio of deflections suffered by them is

In which of the following reactions does $H_2O_2$ act as a reducing agent?