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| Q.13 | Which element of group 13 is a soft metal with a low melting point (303K) and is widely used in doping semiconductors and producing solid-state devices such as transistors? | |
| Ans | 1. Aluminium | |
| 2. Thallium | ||
| 3. Boron | ||
| 4. Gallium |
Correct Ans Provided: 4
