Observe the given figure and answer the following questions:
$(i)$ Write the complete balanced chemical equation for the reaction.
$(ii)$ Write the type of reaction involved.
$(iii)$ Is there any precipitate formed?
$(iv)$ If any precipitate is formed,write the colour of the precipitate.

(N/A) $(i)$ The balanced chemical equation is:
$Na_{2}SO_{4}(aq) + BaCl_{2}(aq) \longrightarrow BaSO_{4}(s) \downarrow + 2NaCl(aq)$
$(ii)$ This is a double displacement reaction (specifically a precipitation reaction).
$(iii)$ Yes,a precipitate is formed.
$(iv)$ The precipitate formed is barium sulphate $(BaSO_{4})$,which is white in colour.