National Science Olympiad Forum By SOF Olympiad Trainer - Page 55

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Subject :NSO    Class : Class 8

Four substances were tested for their electrical conductivity. 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.


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It is quite possible that Q is not an electrolyte but a conduction

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