Among the following,identify the gas which has the greatest average speed of its molecules?

If the average velocity of $N_2$ molecule is $0.3 \, m/s$ at $27 \, ^\circ C$,then the velocity will be $0.6 \, m/s$ at ........... $K$.

Identify the correct labels of $A$,$B$,and $C$ in the following graph from the options given below.
Root mean square speed $(V_{rms})$; most probable speed $(V_{mp})$; Average speed $(V_{av})$

What is the relationship between the average velocity $(v)$,root mean square velocity $(u)$,and most probable velocity $(\alpha)$?

Which of the following equations does not represent the root mean square velocity $(u_{rms})$?

If $r_1, r_2$ and $r_3$ represent the most probable speeds of three different gases at the same temperature as shown in the figure,with molar masses $M_1, M_2$ and $M_3$ respectively,what is the correct order of the molar masses of these gases?