Other Compounds of Phosphorus

Q. Atomicity of white or yellow phosphorus is 4 and it forms a molecule $-P_4$. Calculate the value of the expression $\frac{x.y}{z}$, where:
$x$: Total number of vertex angles in $P_4$ molecule
$y$: Total number of lone pairs in $P_4$ molecule
$z$: Total number of $P-P$ bonds in $P_4$ molecule

Q. One mole each of $H_{3}P{O}_2,H_{3}P{O}_3$ and $H_{3}P{O}_4$ will neutralize '$x$' mol of $NaOH,\text{'}y\text{' mol of Ca}{\left(OH\right)}_2$ and $\text{'}z\text{' mol of Al}{\left(OH\right)}_3$ (assuming all to be strong electrolytes) respectively. $x,y$ and $z$ are in the ratio:

1. $3:1.5:1$
2. $1:2:3$
3. $3:2:1$
4. $1:1:1$

Q. Which of the following given fertilizers contains the highest Phosphorus content?

1. Superphosphate
2. Triple Superphosphate
3. Both a and b
4. None of the above

Q. One mole each of $H_{3}P{O}_2,H_{3}P{O}_3$ and $H_{3}P{O}_4$ will neutralize '$x$' mol of $NaOH,\text{'}y\text{' mol of Ca}{\left(OH\right)}_2$ and $\text{'}z\text{' mol of Al}{\left(OH\right)}_3$ (assuming all to be strong electrolytes) respectively. $x,y$ and $z$ are in the ratio:

1. $3:1.5:1$
2. $1:2:3$
3. $3:2:1$
4. $1:1:1$

Q. Phosphate rocks - in the form of $C{a}_3(P{O}_4{)}_2$ are soluble in water - True or False?

1. True
2. False