p-Block Elements · JEE Advanced previous year questions

The heating of $\mathrm{N}{\mathrm{H}}_4\mathrm{N}{\mathrm{O}}_2$ at 60–70 °C and $\mathrm{N}{\mathrm{H}}_4\mathrm{N}{\mathrm{O}}_3$ at 200–250 °C is associated with the formation of nitrogen containing compounds $\mathbf{X}$ and $\mathbf{Y}$, respectively. $\mathbf{X}$ and $\mathbf{Y}$, respectively, are

1. A.${\mathrm{N}}_2$ and ${\mathrm{N}}_2\mathrm{O}$
2. B.$\mathrm{N}{\mathrm{H}}_3$ and $\mathrm{N}{\mathrm{O}}_2$
3. C.NO and ${\mathrm{N}}_2\mathrm{O}$
4. D.${\mathrm{N}}_2$ and $\mathrm{N}{\mathrm{H}}_3$

The species formed on fluorination of phosphorus pentachloride in a polar organic solvent are

1. A.$[\mathrm{P}{\mathrm{F}}_4{]}^{+}[\mathrm{P}{\mathrm{F}}_6{]}^{-}$ and $[\mathrm{PC}{\mathrm{l}}_4{]}^{+}[\mathrm{P}{\mathrm{F}}_6{]}^{-}$
2. B.$[\mathrm{PC}{\mathrm{l}}_4{]}^{+}[\mathrm{PC}{\mathrm{l}}_4{\mathrm{F}}_2{]}^{-}$ and $[\mathrm{PC}{\mathrm{l}}_4{]}^{+}[\mathrm{P}{\mathrm{F}}_6{]}^{-}$
3. C.$\mathrm{P}{\mathrm{F}}_3$ and $\mathrm{PC}{\mathrm{l}}_3$
4. D.$\mathrm{P}{\mathrm{F}}_5$ and $\mathrm{PC}{\mathrm{l}}_3$