Sodium hydroxide on reaction with amphoteric oxides like.

$SnO+2NaOH\to$ ____$+H_{2}O$ to form.

Sn reacts with sodium hydroxide solution to form

$Sn+2NaOH+H_{2}O\to$ _____$+2H_2$

Sn when fused with $NaOH$ will form.

A white amphoteric oxide reacts with sodium hydroxide to give sodium zincate and water. Name this amphoteric oxide.