The total number of $RNA$ strands in an animal virus is:

$\frac{\sin 5 \theta}{\sin \theta}$ is equal to

$A$ point source emits sound equally in all directions in a non-absorbing medium. Two points $P$ and $Q$ are at a distance of $9 \ m$ and $25 \ m$ respectively from the source. The ratio of the amplitudes of the waves at $P$ and $Q$ is

Haploid plants are obtained from which of the following?

The oxoacid of sulphur which contains two sulphur atoms in different oxidation states is

The maximum possible number of real roots of the equation $x^5 - 6x^2 - 4x + 5 = 0$ is