NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 1674 - 1680 of 1732

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Question 1674

Question

MCQ▾

Which of the following helps in blood clotting in the body?

Choices

Choice (4)Response

a.

RBC

b.

Plasma

c.

Platelets

d.

WBC

Question 1675

Question

MCQ▾

White light consists of which of the following color?

Choices

Choice (4)Response

a.

Red

b.

Indigo

c.

Green

d.

All a., b. and c. are correct

Question 1676

Question

MCQ▾

The ratio of the velocity of light in a vacuum to its velocity in a specified medium is known as:

Choices

Choice (4)Response

a.

Refractive index

b.

Speed index

c.

Velocity index

d.

Question does not provide sufficient data or is vague

Question 1677

Question

MCQ▾

Which of the following objects are opaque?

Choices

Choice (4)Response

a.

Glass

b.

Bulb

c.

Wood

d.

Question does not provide sufficient data or is vague

Question 1678

Question

MCQ▾

The separation of visible light into its different colors is known as:

Choices

Choice (4)Response

a.

Dispersion

b.

Reflection

c.

Refraction

d.

All of the above

Question 1679

Question

MCQ▾

Which of the following objects does not allow light to pass through them?

Choices

Choice (4)Response

a.

Transparent objects

b.

Opaque objects

c.

Translucent objects

d.

None of the above

Question 1680

Question

MCQ▾

Which of the following statement is true?

Choices

Choice (4)Response

a.

The normal, incident ray and reflected ray does not lie on the same plane.

b.

Incident and reflected ray does not lie on either side of normal.

c.

Angle of incidence is not equal to the angle of reflection.

d.

None of the above

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