Quiz about Chemical Effects of Electric Current – 1

Question 1

A piece of fresh potato does not conduct electricity.

Accepted Answer

False

Answer

True

Question 2

LED glows even when a low electric current passes through it.

Accepted Answer

True

Answer

False

Question 3

The passage of an electric current through a conducting solution causes chemical effect.

Accepted Answer

True

Answer

False

Question 4

Materials such as rubber plastic and wood conduct electricity.

Accepted Answer

False

Answer

True

Question 5

Do liquids also conduct electricity?

Accepted Answer

No, some liquids are good conductors of electricity and some are poor conductors.

Answer

yes, some liquids are good conductors of electricity and some are poor conductors.

Question 6

Give one example of the chemical effect of electric current.

Accepted Answer

Accepted Answer

Accepted Answer

Answer

Question 7

State whether vinegar and lemon juice will conduct electricity or not. What is the first statement of this audio clip?

Accepted Answer

Though vinegar and lemon juice conduct electricity.

Answer

But they are weak conductors of electricity.

Question 8

State whether vinegar and lemon juice will conduct electricity or not. What is the second statement of this audio clip?

Accepted Answer

But they are weak conductors of electricity.

Answer

Though vinegar and lemon juice conduct electricity.

Question 9

What happens to a compass needle kept nearby when current flows in a wire?

Accepted Answer

Even if the current is small, the deflection of the magnetic needle can be seen.

Answer

Even if the current is small, the deflection of the magnetic needle cannot be seen.

Question 10

Which is the polluting waste generated by electroplating factories?

Accepted Answer

The conducting solution used in the electroplating process is the polluting waste generated by electroplating factories.

Answer

The chimney used in the electroplating process is the polluting waste generated by electroplating factories.

Question 11

What is the advantage of using LED in testing the electrical conductivity of liquids? What is the first statement of this audio clip?

Accepted Answer

The advantage of using LED in testing the electrical conductivity of liquids is that it glows.

Answer

Even when a weak electric current flows through it.

Question 12

What is the advantage of using LED in testing the electrical conductivity of liquids? What is the second statement of this audio clip?

Accepted Answer

Even when a weak electric current flows through it.

Answer

The advantage of using LED in testing the electrical conductivity of liquids is that it glows.

Question 13

Does pure water conduct electricity? If not, what can we do to make it conducting? What is the first statement of this audio clip?

Accepted Answer

Pure water is free of salts and is a poor conductor.

Answer

We can add some common salt in pure water to make it conducting.

Question 14

Does pure water conduct electricity? If not, what can we do to make it conducting? What is the second statement of this audio clip?

Accepted Answer

We can add some common salt in pure water to make it conducting.

Answer

Pure water is free of salts and is a poor conductor.

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