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Science Quiz | General Knowledge Multiple Choice Questions and Answers

Questions
46 Which of the following principles is associated with Optical fibre ?
A Scattering
B Interference
C Total internal reflection
D Refraction

Answer: Option [C]
47 Which type of coal produces the greatest energy ?
A Coal
B Anthracite
C Lignite
D Bituminous

Answer: Option [B]
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48 Ultra violet radiations of the Sun do not reach the earth because of the layer of :
A Ozone
B Carbon di-oxide
C Nitrogen
D Ammonia

Answer: Option [A]
49 Which metal is used for the manufacturing of heating elements used in electric iron ?
A Chromium
B Nichrome
C Lead
D Nickel

Answer: Option [B]
50 Which device is used to measure the speed of wind ?
A Altimeter
B Anemometer
C Calorimeter
D Chronometer

Answer: Option [B]
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