Consider the following setup of electrolysis. Which of the statements below is/are true?

The bulb does not glow if the water is distilled water.

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The bulb glows if the water is tap water.

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The bulb glows brightly if some alkali is added

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The bulb glows brightly is some acid is added.

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Solution

The correct options are
A The bulb does not glow if the water is distilled water.
B The bulb glows if the water is tap water.
C The bulb glows brightly if some alkali is added
D The bulb glows brightly is some acid is added.

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A tester is used to check the conductivity of an unknown solution of water. What can be concluded, if the bulb of the tester glows brightly?

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