The correct order of $C-O$ bond length in $CO$,$CO_3^{2-}$ and $CO_2$ is:

Which of the following radiations has the least wavelength?

If $\sin (y+z-x), \sin (z+x-y)$ and $\sin (x+y-z)$ are in $AP$,then

Which female gland is homologous to the male prostate gland?

$A$ particle executes simple harmonic oscillation with an amplitude $a$. The period of oscillation is $T$. The minimum time taken by the particle to travel half of the amplitude from the equilibrium position is

Which of the following pairs is incorrectly matched?