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Everyday Science Online Test MCQs With Answers

Question # 1

Cryptography is she study which deals with the

Choose an answer

Secret writing

Weather

Wood engraving

History of life

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Question # 2

What is the chemical name of bleaching powder?

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Calcium carbonate

Calcium hydrochloride

Calcium Phosphate

Calcium cynamide

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Question # 3

A boat full of scrap of iron is floating on water in large tank. If all the iron is dropped into water the level of water will

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Go up

Go down

Remain the same

None of them

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Question # 4

The most abundant element in the ea5rth;s crust is

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Silicon

Aliminium

Nitrogen

Oxygen

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Question # 5

Which computer acts as a server for other computer on the network?

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Mainframe

Host

Main Server

Master

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Question # 6

Who invested the modern lie detector:

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Graham Bell

Mark Spencer

John Larson

Chris Williams

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Question # 7

Rusting of lion requires:

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Oxygen only

Oxygen and carbon dioxide

Oxygen and water

Carbon dioxide only

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Question # 8

Which device mixes air and petrol (gas) for the internal combination engine?

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Carburetor

Choke

Crankshaft

Cylinder

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Question # 9

What is RDX?

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An instrument

A gene

A fertilizers

An explosive

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Question # 10

which metal is solve - with in colour developing a slighly yellow/pink a colour upon exposure to air. It is widely distributed on earth and occurs in over 800 known mineral. its oxide is used in the production of high intensity lights.

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Silver

yttrium

Scandium

Aluminum

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Question # 11

A Fahrenheit thermometer indicates a temperature of -40° F. Its corresponding reading on the Celsius scale will be

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-20°C

-40°C

+10°C

+40°C

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