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A tester is used to check the conduction of electricity through two liquids, labelled A and B. It is found that the bulb of the tester glows brightly for liquid

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Question

A tester is used to check the conduction of electricity through two liquids, labelled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that ______.

Options

  • liquid A is a better conductor than liquid B.

  • liquid B is a better conductor than liquid A.

  • both liquids are equally conducting.

  • conducting properties of liquid cannot be compared in this manner.

MCQ
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Solution

A tester is used to check the conduction of electricity through two liquids, labelled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that Liquid A is a better conductor than liquid B.

Explanation:

The amount of current flowing through a conducting solution depends on the conductivity of the solution. With more conductivity, more current passes through the solution and vice versa. Hence, liquid A's conductivity is greater than liquid B's.

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Conductor of Electricity: Liquid
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Chapter 11: Chemical Effects of Electric Current - Exercises [Page 147]

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NCERT Science [English] Class 8
Chapter 11 Chemical Effects of Electric Current
Exercises | Q 5. | Page 147

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