List of top Chemistry Questions on Group 15 Elements asked in JEE Main

The maximum covalency of a non-metallic group 15 element 'E' with the weakest E-E bond is:
(a) Baryte,
(b) Galena, 
(c) Zinc blende and 
(d) Copper pyrites. 
How many of these minerals are sulphide based?
The correct order of the oxidation states of nitrogen in $NO, N_2O, NO_2$ and $N_2 O_3$ is :
An organic compound $'A'$ is oxidized with ${Na2O2}$ followed by boiling with ${HNO3}$. The resultant solution is then treated with ammonium molybdate to yield a yellow precipitate. Based on above observation, the element present in the given compound is :