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

Questions

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

Answer: Option [B]

22 The purpose of using Diode is :

A amplification

B purification

C modulation

D demodulation

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

Answer: Option [C]

24 Who invented Electron Microscope ?

A Galileo

B Knoll and Ruska

C Robert Koch

D Leeuwenhook

Answer: Option [B]

25 What is the wavelength of visible spectrum ?

A 1300A⁰ - 3000A⁰

B 3900A⁰ - 7600A⁰

C 7800A⁰ - 8000A⁰

D 8500A⁰ - 9800A⁰

Answer: Option [B]