Other Compounds of Phosphorus

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

Q. Upon heating with $C{u}_{2}S,$ the reagent(s) that give copper metal is/are
(IIT-JEE, Advanced 2014)

1. $CuFe{S}_2$
2. $CuO$
3. $C{u}_{2}O$
4. $CuS{O}_4$

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

1. True
2. False

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