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SSC CHSL 2020 PYQ — Question 28

SSC CHSL - 14th October 2020 - Shift 1 • General Awareness • Q28

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Which of the following is not a good conductor of electricity?

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Correct answer: A

Explanation

The correct answer is option 1 i.e Bromine.

Bromine is not a good conductor of electricity, unlike the other options which are all considered good conductors. Bromine is a non-metal and generally, non-metals are poor conductors, except for graphite which has a unique structure that allows for electron flow. 

Bromine (Br) – A non-metal halogen in liquid form, bromine lacks free electrons, making it a poor conductor.

Other options:

  1. Graphite (C) – A carbon allotrope with free-moving electrons between layers, allowing conductivity.

  2. Silver (Ag) – The best metallic conductor due to high electron mobility.

  3. Copper (Cu) – Widely used in wiring because of its excellent conductivity and affordability.