Tin contains only 5 - 10 % of tin as SnO_(2), the rest being Siliceous matter, wolfram and pyrites of iron copper and arsenic. It is not attached by water. Only molten tin reacts with steam liberating hydrogen. In stannous oxide, tin is +2 oxidising state. So stannous oxide is also described as tin (II) oxide Tin is attacked by

Tin contains only 5 - 10 % of tin as SnO_(2), the rest being Siliceous

1.	Tin contains only 5 - 10 % of tin as SnO_(2), the rest being Siliceous matter, wolfram and pyrites of iron copper and arsenic. It is not attached by water. Only molten tin reacts with steam liberating hydrogen. In stannous oxide, tin is +2 oxidising state. So stannous oxide is also described as tin (II) oxide Tin is attacked by
Answer» Hot KOH Hot HCl Conc. `HNO_(3)` All of these Solution :`SN+ 2KOH +H_(2)O RARR K_(2) SO_(3) + 2H_(2)` `Sn+ 2HCl rarr SnCl_(2) +H_(2)` `4Sn+ 4HNO_(3) rarr H_(2)SnO_(3) + 4NO_(2) + H_(2)O`