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Question

Which of the following electrolyte will help the bulb glow?

A
Kerosene
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B
Sugar solution
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C
Distilled water
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D
Sodium chloride
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Solution

The correct option is D Sodium chloride
A liquid through which an electric current can pass, especially in an electric cell or battery, is known as an electrolyte. Many acids, bases and salts dissolved in water are electrolytes.
Sodium chloride is an electrolyte too. Thus, it allows electric current to pass through it. Hence, the bulb will glow when electrodes are dipped in it.

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