A LED tester glows dim while checking the electrical conductivity of a liquid. The liquid is a _______ conductor of electricity.

bad

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weak

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good

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strong

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Solution

The correct option is B weak
The LED tester, while checking the electrical conductivity of a liquid would glow dull if there is a weak flow of current through it. From this we can infer that the liquid to be tested is a weak conductor of electricity. Brighter the LED glows greater is the conductivity of a liquid.

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