NSO Level 1- Science Olympiad (SOF) Class 8: Questions 945 - 949 of 1076

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Question number: 945

» Light

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Appeared in Year: 2012

MCQ▾

Question

During a thunderstorm, an observer can see lightning before hearing its thunder. why does he see lightning before he hear thunder?

Choices

Choice (4) Response

a.

Sound cannot reflect off surfaces as easily as light

b.

Sound travels slower than light.

c.

Sound needs a medium to travel through.

d.

Sound is not processed by the brain as fast as light

Question number: 946

» Chemical Effects of Electric Current

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MCQ▾

Question

In a LED, the positive terminal of the battery is connected to the

Choices

Choice (4) Response

a.

Any lead

b.

Longer lead

c.

Shorter lead

d.

Question does not provide sufficient data or is vague

Question number: 947

» Chemical Effects of Electric Current

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MCQ▾

Question

A list of liquids are given in the table. Find out the wrong entries.

Table shows A list of liquids

Table shows A list of liquids

Good Conductors

Poor Conductors

Lemon juice

Vinegar

Tap water

distilled water

Kerosene

vegetable oil

Choices

Choice (4) Response

a.

Tap water, kerosene

b.

Vinegar, kerosene

c.

Lemon juice, vegetable oil

d.

Vinegar, distilled water

Question number: 948

» Chemical Effects of Electric Current

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MCQ▾

Question

The picture shown below represents a

Image shows Light Emiting Diode

Image Shows Light Emiting Diode

Image shows Light Emiting Diode

Choices

Choice (4) Response

a.

Light emitting diode

b.

Light emitting device

c.

Low energy device

d.

Question does not provide sufficient data or is vague

Question number: 949

» Some Natural Phenomena

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MCQ▾

Question

A disaster with sudden shaking of the earth for a short period of time is called

Choices

Choice (4) Response

a.

Tsunami

b.

Flood

c.

Earthquake

d.

Cyclone

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