Question

Among the following statements which is/are incorrect?

• A. In the preparation of compounds of $Xe$, Bartlett had taken $O_{2}Pt{F}_6$ as a base compound because both $O_2$ and $Xe$ have almost same ionisation enthalpy
• B. Nitrogen does not show allotropy
• C. A brown ring is formed in the ring test for $N{O}_3^{-}$ ion. It is due to the formation of $\left[Fe\right(H_{2}O{)}_5\left(NO\right){]}^{2+}$
• D. On heating white phosphorous with concentrated $NaOH$ solution in an inert atmosphere of $C{O}_2$, $P{H}_3$ gas is formed

Answer 1

The correct option is D On heating white phosphorous with concentrated $NaOH$ solution in an inert atmosphere of $C{O}_2$, $P{H}_3$ gas is formed

White phosphorous reacts with concentrated $NaOH$ to form phosphine($P{H}_3$) and sodium hypophosphite($NaHP{O}_2$).

$P_4+3NaOH+3H_{2}O\to P{H}_3+3NaHP{O}_2$.

So option $D$ is an incorrect statement.$C{O}_2$ is not formed in the above reaction.

Hence option $D$ is correct.