List of top Questions asked in WBJEE- 2018

There is a small air bubble at the center of a solid glass sphere of radius \(r\) and refractive index \(\mu\). What will be the apparent distance of the bubble from the centre of the sphere, when viewed from outside?

White phosphorus $P_4$ has the following characteristics:

The number of unpaired electrons in $Ni$ (atomic number $= 28)$ are

$Cl_2O_7 $ is the anhydride of