$Pb{O}_2$ $\to$ $PbO$                     $∆G_{298}$ $<0$
$Sn{O}_2\to SnO$                       $∆G_{298}$ $>$ $0$

The most probable oxidation state of Pb & Sn will be:

1. ${\mathrm{Pb}}^{+4},$ ${\mathrm{Sn}}^{+4}$

2. ${\mathrm{Pb}}^{+4}$ $,$ ${\mathrm{Sn}}^{+2}$

3. ${\mathrm{Pb}}^{+2}$ $,$ ${\mathrm{Sn}}^{+2}$

4. ${\mathrm{Pb}}^{+2}$ $,$ ${\mathrm{Sn}}^{+4}$

In a Borax bead test, which compound is formed: 

1. Orthoborate

2. Metaborate

3. Double oxide

4. Tetraborate

Incorrect statement among the following about zeolites is: