1.

Amongst the following the total number of the compounds i.e. oxide soluble in aqueous NaOH is : `Ag_2O, Al_2O_3,ZnO, SnO,PbO,CuO,BeO,BaO,CaO`

Answer» Correct Answer - 5
`BeO(s)+2NaOH(aq)toNa_2BeO_2(aq)+H_2O`
`Al_2O_3(s)+2NaOH(aq)to2NaAlO_2(aq)+H_2O`
`ZnO(s)+2NaOH(aq)toNa_2ZnO_2(aq)+H_2O`
`SnO(s)+2NaOH(aq)to Na_2SnO_2(aq)+H_2O`
`PbO(s)+2NaOH(aq)toNa_2PbO_2(aq)+H_2O`


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