$A$ force of $100 \ dynes$ acts on a mass of $5 \ g$ for $10 \ s$. The velocity produced is .......... $cm/s$.

The acceptable level of carbon monoxide gas $(CO)$ in the atmosphere in $ppm$ level is

Which of the following exhibits the weakest intermolecular forces?

$A$ nucleus of uranium decays at rest into nuclei of thorium and helium. Then:

From which part of the plant is cocoa obtained from $Theobroma$ $cacao$?

$P$ is a point on the segment joining the feet of two vertical poles of heights $a$ and $b$. The angles of elevation of the tops of the poles from $P$ are $45^{\circ}$ each. Then,the square of the distance between the tops of the poles is