The most probable oxidation state of Pb & Sn will be:
1.
2.
3.
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:
1. | They have an open structure which enables them to take up small molecules. |
2. | Zeolites are aluminosilicates having a three-dimensional network. |
3. | Some of the \(\mathrm{SiO}_4^{4-}\)units are replaced by \(\mathrm{AlO}_4^{5-}\) and \(\mathrm{AlO}_6^{9-}\) ions in zeolites. |
4. | They are used as cation exchangers. |