Which of the following,on reaction with water,will have a $pH$ less than $7$?

Superphosphate of lime contains

$Ge(II)$ compounds are strong reducing agents,whereas $Pb(IV)$ compounds are strong oxidizing agents. This is due to.........

Reaction of an inorganic sulphite $X$ with dilute $H_{2}SO_{4}$ generates compound $Y$. Reaction of $Y$ with $NaOH$ gives $X$. Further,the reaction of $X$ with $Y$ and water affords compound $Z$. $Y$ and $Z$,respectively,are:

Carbon differs from other elements of the group. Which is the false statement?

Assertion : $PbCl_2$ is more stable than $PbCl_4$.
Reason : $PbCl_4$ is a powerful oxidising agent.