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Electrolytes

An electrolyt...

Question

An electrolytic cell is taken with two graphite rods inserted in it and connected to opposite terminals of a battery. An electric bulb is also introduced on the circuit. Different substances are taken in the cell and the conductivity is tested. Identify the case where the bulb glows most brilliantly.

A

Molten lead bromide

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B

Molten wax

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C

Kerosene oil

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D

Barium sulphate in water

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Solution

The correct option is B Molten lead bromide
Molten lead broimide is the best conductor among molten wax, kerosene oil and barium sulphate in water. Molten salts are fully ionized and diluted salts contain some unionized molecules also.

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