In printed scientific names, only the . . . . . . is capitalized.

$A$ prism of refractive index $\sqrt{2}$ has a refracting angle of $60^{\circ}$. In order for a ray to suffer minimum deviation,it should be incident at an angle of.......$^{\circ}$.

The greatest evolutionary change enabling land vertebrates to be completely free from water habitats was the development of:

The statement $\sim (p \leftrightarrow \sim q)$ is

The compound in which the number of $d\pi - p\pi$ bonds are equal to those present in $ClO_4^{-}$ is:

$x = \frac{1-\sqrt{y}}{1+\sqrt{y}} \Rightarrow \frac{dy}{dx}$ is equal to