UPSEE Solved Model Paper 5

Sn belongs to 14th group of the periodic table
When tin is boiled with aquous alkali for example NaOH (sodium hydroxide) , the solution mainly contains stannate ions, (SnO3)2−
The reaction showing the same can be represented as
Sn+2NaOH+H2O → Na2SnO3+2H2