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 If we repeat this activity by taking sulphuric acid solution, sodium hydroxide solution,
common salt solution, copper sulphate solution, vinegar or lemon juice in the beaker,

the bulb glows again.
 But, if we take sugar solution, distilled water, alcohol solution, milk, vegetable oil,

honey, etc., the bulb will not glow, stating that, these liquids does not conduct

electricity at all.

B. Weak conduction of electricity in case of Vinegar and Lime juice:

 We have seen that when an electric current is passed through hydrochloric acid
solution, the bulb glows brightly.

 But, when we take vinegar or lemon juice, in place of Hydrochloric acid, we can

observe that the bulb glows very dimly, even when larger battery is applied to the
circuit.

 The very dim glowing bulb indicates that even though vinegar and lemon juice
conduct electricity but they are weak conductors of electricity.

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