The organelle associated with aerobic respiration is:

Which one of the following compounds forms a quaternary salt on reacting with excess methyl iodide?

$A$ charged particle of mass $m$ and charge $q$ is released from rest in a uniform electric field $E.$ Neglecting the effect of gravity,the kinetic energy of the charged particle after $t$ seconds is:

$A$ $2\,\mu F$ capacitor is charged as shown in the figure. The percentage of its stored energy dissipated after the switch $S$ is turned to position $2$ is.....$\%$

What is a phycobiont?

At a certain place,a magnet makes $30$ oscillations per minute. At another place where the magnetic field is double,its time period will be: