Calculate the strength of $20 \, V \, H_2O_2$ in $g/L$.

Which of the following belongs to the series Gamopetalae?

Which of the following substances undergoes sublimation?

The molarity of a $0.2 \ N \ Na_2CO_3$ solution will be .......... $M$.

On her vacations,Veena visits four cities ($A, B, C$,and $D$) in a random order. What is the probability that she visits $A$ before $B$?

$A$ spherical solid ball of volume $V$ is made of a material of density $\rho_1$. It is falling through a liquid of density $\rho_2$ $(\rho_2 < \rho_1)$. Assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed $v$,i.e.,$F_{viscous} = -kv^2$ $(k > 0)$. The terminal speed of the ball is