EASY
8th CBSE
IMPORTANT
Earn 100

Label the given diagram of a dry cell.

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Important Questions on Chemical Effects of Electric Current

MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>Let's Get Started

Identify the effects of the electric current on which each of the following objects work.

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EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 1
When an electric current passes through salt water, the gas liberated at the positive electrode is
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 2
Which of the following liquids conducts electricity?
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 3
In which of the following options, the liquids have been arranged in the increasing order of conductivity?
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 4
Iron sheets used for making household articles are usually coated with zinc to prevent
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 5
Which among the following is not an application of electroplating.
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 1

State whether the following statements are True (T) or False (F).

When salt is added to pure water, it reduces the conductivity of water.

EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 2

State whether the following statements are True (T) or False (F).

Electrolyte is a chemical substance that allows electricity to pass through it.