Which of the following is NOT a good conductor of electricity?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Sulphur.
Sulphur is not a good conductor of electricity. It is a non-metal and lacks free electrons or ions that are necessary for electrical conductivity. In contrast, gold, silver, and aluminium are metals and excellent conductors of electricity due to the presence of free-moving electrons. Among them, silver is the best conductor, followed by gold and aluminium. Sulphur, being a poor conductor, is commonly used in applications where insulation or resistance to electricity is required.