Chemical Effects of Electric Current [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 7 of 12

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Question 1

Statement True-False▾

Does distilled water conduct?

Choices

Choice (4)Response

a.

False

b.

True

c.

None of the above

d.

All of the above

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Question 2

Question MCQ▾

LED is defined as:

Choices

Choice (4)Response

a.

Light emitting diode

b.

Insulator

c.

Lead

d.

Electrode

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Question 3

Question MCQ▾

Chromium plating is found on:

Choices

Choice (4)Response

a.

Towel rails

b.

Car bumpers bicycle handlebars

c.

Bath tapes

d.

All a., b. and c. are correct

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Question 4

Question MCQ▾

Deposition of a metal over another metallic object is called as:

Choices

Choice (4)Response

a.

Electrodes

b.

Electroplating

c.

Electrolysis

d.

Question does not provide sufficient data or is vague

Edit

Question 5

Question MCQ▾

Terminals through which electric current passed are called as:

Choices

Choice (4)Response

a.

Insulators

b.

Conductors

c.

LED

d.

Electrode

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Question 6

Question MCQ▾

Why tin cans are used for storing food items:

Choices

Choice (4)Response

a.

Because tin is more reactive as compared to iron

b.

Because tin is less reactive as compared to iron

c.

It is a good conductor

d.

It is a good insulator

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Question 7

Question MCQ▾

Substances which allow the current to pass through them are:

Choices

Choice (4)Response

a.

Semi-Conductors

b.

Conductors

c.

Insulators

d.

Question does not provide sufficient data or is vague

Edit