Which two sets of reactants best represent the amphoteric character of

CHEMISTRY · Single correct · CBSE · Chemistry · Metals and Non-metals · Metals and Non-metals

Problem

\text{Zn}(\text{OH})_2

? Set 1:

\text{Zn}(\text{OH})_2(\text{s})

and

\text{OH}^-(\text{aq})

Set 2:

\text{Zn}(\text{OH})_2(\text{s})

and

\text{H}_2\text{O}(\text{l})

Set 3:

\text{Zn}(\text{OH})_2(\text{s})

and

\text{H}^+(\text{aq})

Set 4:

\text{Zn}(\text{OH})_2(\text{s})

and

\text{NH}_3(\text{aq})

(1) 1 and 2 (2) 1 and 3 (3) 2 and 4 (4) 3 and 4