CBSE Class-8 Science: Questions 301 - 307 of 469

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Question number: 301

» Chemical Effects of Electric Current » Electroplating » Circuit for Electroplating

MCQ▾

Question

Chromium plating is found on:

Choices

Choice (4) Response

a.

Car bumpers bicycle handlebars

b.

Bath tapes

c.

Towel rails

d.

All a. , b. and c. are correct

Question number: 302

» Some Natural Phenomena » Earthquakes » What Causes an Earthquake?

MCQ▾

Question

Boundaries of the tectonic plates are weak zones. These weak zones are called as:

Choices

Choice (4) Response

a.

Fault zone

b.

Seismic zone

c.

Both a. and b. are correct

d.

None of the above

Question number: 303

» Some Natural Phenomena » Charging by Rubbing » Concept of Charged Objects

MCQ▾

Question

Charged objects are defined as:

Choices

Choice (4) Response

a.

Allowing the charge to flow to the earth

b.

Property of objects due to which it applies and experiences electric force

c.

Producing charge on a body by rubbing

d.

An arrangement to deduct charge

Question number: 304

» Some Natural Phenomena » Earthquakes » What Causes an Earthquake?

MCQ▾

Question

Major cause of the earthquake is:

Choices

Choice (4) Response

a.

Movement of the tectonic plates

b.

Movement of the middle layer of earth

c.

Movement of the earth

d.

Question does not provide sufficient data or is vague

Question number: 305

» Sound » Amplitude, Time Period & Frequency of Vibration » Amplitude and Frequency of Vibration

MCQ▾

Question

Number of oscillations per second is called as:

Choices

Choice (4) Response

a.

Frequency

b.

Oscillation

c.

Loudness

d.

Time period

Question number: 306

» Some Natural Phenomena » Earthquakes » Structure of the Earth

MCQ▾

Question

Innermost layer core of the earth consists of:

Choices

Choice (4) Response

a.

Solid iron and nickel

b.

Silicate rock

c.

Molten iron and nickel

d.

Both a. and c. are correct

Question number: 307

» Sound » Sound » Concept of Sound

MCQ▾

Question

Sound is defined as:

Choices

Choice (4) Response

a.

Sound can be created or transmitted only in medium

b.

Form of energy

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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