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Four substances were tested for their el...

Four substances were tested for their electrical conductivity by placing in contact with anode and cathode in a cell. The results are shown in the table. Study the table and answer the following questions.

In substance Q, bulb lights up but no substance is found either at cathode or at anode, why?

A

Because Q is non-electrolyte.

B

Because Q is an element which remains unchanged when it conducts electricity.

C

Because Q is an electrolyte that conducts electricity when it is in the molten state.

D

Because Q is a poor conductor of electricity.

Text Solution

Verified by Experts

The correct Answer is:
B
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