Which of the following is the pyrosilicate ion?

What is produced by the reaction of $Ca(OH)_2$ with $SO_2$?

The group $14$ elements $A$ and $B$ have the first ionisation enthalpy values of $708$ and $715 \ kJ \ mol^{-1}$ respectively. These values are the lowest among their group members. The nature of their ions $A^{2+}$ and $B^{4+}$ respectively is:

Which of the following statements is correct with respect to the property of elements with an increase in atomic number in the carbon family (group $14$)?

What is the product obtained in the reaction of $HgCl_2$ and $Hg(CN)_2$?

$A$ thin film of aluminum deposited on glass acts as a good mirror because ...............