Which of the following when added to distilled water can increase its electrical conductivity?

Lemon juice

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Copper sulphate

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Vegetable oil

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Sugar

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Solution

The correct options are
A Lemon juice
B Copper sulphate
Electrical conductivity of distilled water can be increased by adding some type of an acid or a salt to it. Lemon juice is acidic in nature as it contains citric acid. Copper sulphate is a type of copper salt. So, adding these two can help to increase its electrical conductivity. Vegetable oil and sugar are bad conductors of electricity.

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