MCQ
A solid which is not transparent to visible light and whose conductivity increases with temperature is formed by
- AMetallic bonding
- BIonic bonding
- ✓Covalent bonding
- DVander Waals bonding
✓
Answer
Correct option: C.
Covalent bonding
c
Van der Waal's bonding is attributed to the attractive forces between molecules of a liquid. The conductivity of semiconductors (Covalent bonding) and insulators (ionic bonding) increase with increase in temperature while that of metals (metallic bonding) decrease.
Van der Waal's bonding is attributed to the attractive forces between molecules of a liquid. The conductivity of semiconductors (Covalent bonding) and insulators (ionic bonding) increase with increase in temperature while that of metals (metallic bonding) decrease.
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