MCQOPTIONS
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| 1. |
Some objects were classified into two groups as under. Group 1: Iron, graphite, silver Group 2: Rubber, plastics, wood The classification of objects has been done using which one of the following categories? |
| A. | Magnetic substances and non-magnetic substances |
| B. | Metals and non-metals |
| C. | Conductors and insulators |
| D. | All the above |
| Answer» D. All the above | |