One of the endangered species of Indian medicinal plants is

The number of ways in which $6$ men and $5$ women can dine at a round table,if no two women are to sit together,is:

In the figure shown,the velocities of different blocks are given. The velocity of $C$ is $.........\,m/s$.

The equation of the lines passing through the origin and having slopes $3$ and $-\frac{1}{3}$ is

$A$ gaseous mixture contains $CH_4$ and $C_2H_6$ in equimolecular proportion. The weight of $2.24 \ L$ of this mixture at $NTP$ is ............ $g$.

Boron can be obtained by various methods but not by :