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| 1. |
Which of the following oxides are amphoteric .(1) BeO (2) SnO (3) ZnO (4) Al_2O_3 |
| Answer» Solution :(1) COVALENT, (2) covalent, (3) ELECTROVALENT, (4) electrovalant, (5) electrovalent, (6) covalent, (7) electrovalent, (8) electrovalent, covalent and co-ordinate covalent, (9) covalent, (10) electrovalent, (11) covalent, (12) electrovalent, covalent and coordinate covalent. | |