NSO Level 1- Science Olympiad (SOF) Class 10: Questions 489 - 495 of 986

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Question number: 489

» Human Eye and Colourful World

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MCQ▾

Question

To enable observer to see a rainbow the sun should be positioned

Choices

Choice (4) Response

a.

behind observer

b.

on observer left side

c.

on observer right side

d.

in front of observer

Question number: 490

» Life Processes

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MCQ▾

Question

A cell union called

Choices

Choice (4) Response

a.

Gap junction

b.

Synapse

c.

Tight junction

d.

Interneural bridge

Question number: 491

» Human Eye and Colourful World

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MCQ▾

Question

Which of the following is not a neutral color?

Choices

Choice (4) Response

a.

Black

b.

Purple

c.

Brown

d.

White

Question number: 492

» Life Processes

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MCQ▾

Question

Factors affecting transpiration rate are

Choices

Choice (4) Response

a.

Wind

b.

Temperature

c.

Atmospheric humidity

d.

All a. , b. and c. are correct

Question number: 493

» Electricity

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MCQ▾

Question

Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source.

Choices

Choice (4) Response

a.

Thick wire

b.

Any wire

c.

Same flow on both wires

d.

Thin wire

Question number: 494

» Electricity

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MCQ▾

Question

The current will an electrical bulb draw from a 220 V source, if the resistance of the bulb filament is . The current is

Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

Question number: 495

» Human Eye and Colourful World

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MCQ▾

Question

Which of the following is correct for infrared ray detected by human eye?

Choices

Choice (4) Response

a.

Infrared rays are not recognized by human eye

b.

Infrared lights wavelengths longer than microwaves

c.

Infrared lights wavelengths shorter than visible

d.

Question does not provide sufficient data or is vague

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