Question

Number of salts among the following that will give metal on heating
`Zn(NO_(3))_(2),AgNO_(3),Cu(NO_(3))_(2),Hg(NO_(3))_(2)`

Answer 1

Correct Answer - 2
`AgNO_(3)overset(Delta)(rarr)Ag+NO_(2)+(1)/(2)O_(2)`
`Hg(NO_(3))_(2)overset(Delta)(rarr)Hg+2NO_(2)+O_(2)`
`(i)underset((A))(Pb(NO_(3))_(2))+2NaClrarrunderset((B))(PbCl_(2))+1NaNO_(3)`
`(ii) PbCl_(2)+H_(2)S underset((C ))(PbS)+2HCl
`(iii) underset((B))(PbCl_(2))+2Nal rarr underset((D))(PbI_(2))+2NaCl`
`(iv) Pb(NO_(3))_(2) rarr PbO+2NO_(2)+(1)/(2)O_(2)`