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General Science Objective Questions and Answers | GK for SSC Data Entry Operator Exam

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General Science multiple choice questions and answers for Staff Selection Commission Exam page contain 5 questions. Each GK mcq has 4 possible answers. Choose your answer and check it with the given correct answer.
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(21) In a filament type light bulb most of electric power consumed appears as :
[A] LED light
[B] Infra red rays
[C] Ultra violet rays
[D] Fluorescent light

Comment

Answer: Option [B]
(22) The purpose of using Diode is :
[A] amplification
[B] purification
[C] modulation
[D] demodulation

Comment

Answer: Option [B]

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(23) What is the minimum escape velocity of rocket to be launched into space ?
[A] 4KM/Sec
[B] 8KM/Sec
[C] 11KM/Sec
[D] 13KM/Sec

Comment

Answer: Option [C]
(24) Who invented Electron Microscope ?
[A] Galileo
[B] Knoll and Ruska
[C] Robert Koch
[D] Leeuwenhook

Comment

Answer: Option [B]
(25) What is the wavelength of visible spectrum ?
[A] 1300A0 - 3000A0
[B] 3900A0 - 7600A0
[C] 7800A0 - 8000A0
[D] 8500A0 - 9800A0

Comment

Answer: Option [B]

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