Of the materials listed below A. Water (Distilled) B. Solution of common salt C. Mercury D. Caustic soda solution E. Glycerine A set of materials consisting of good conductor of electricity is
A
A, B and C
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B
A, D and E
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C
C, A and E
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D
B, C and D
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Solution
The correct option is A B, C and D To conduct electricity liquid materials need free ions.
In case of distilled water and glycerine no free ions are available.
Solution of common salt, Mercury, Caustic soda solution are good conductors of electricity.