Science Environment And Technology - Yearwise Questions - Computer Science

Posted on May 15th, 2020 in Paper IV : General Studies II
Tags: mains exam, MCQ, science and technology, WBCS

Science Environment And Technology – Yearwise Questions – Computer Science – W.B.C.S. Mains Examination.

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WBCS Main Question Paper – 2019

Indira Gandhi Centre for Atomic Research is located in
(A) Kolkata
(B) Kalpakkam
(C) Mumbai
(D) Hyderabad
What does ‘CSIR’ stand for?
(A) Council of Scientific and Industrial Research
(B) Center for Science and Industrial Research
(C) Center for Share and Investment Ratio
(D) Council for Scientific and Informational Research
Where is Vikram Sarabhai Space Centre?
(A) Bengaluru
(B) Sriharikota
(C) Baleswar
(D) Thiruvananthapuram
The device used by Banks to automatically read those special numbers
on the bottom of the cheques is
(A) MICR
(B) OMR
(C) UPC
(D) UDIC
WAN hardware includes
(A) Multiplexors and routers
(B) EDF
(C) Bridger and modems
(D) Removable disc
What is the wavelength of Super High Frequency (SHF) especially used
in radar and satellite communication?
(A) 1 m – 10 m
(B) 1 cm – 10 cm
(C) 10 cm – 1 m
(D) 0.1 cm – 1 cm

7.Which one is the first search engine in Internet?
(A) Google
(B) Archie
(C) Altavista
(D) WAIS

Which one programming language is used for artificial intelligence?
(A) C
(B) Java
(C) J2EE
(D) Prolog
A dual layer Blue-ray disc can store data upto
(A) 20 GB
(B) 30 GB
(C) 40 GB
(D) 50 GB
Data transmitted or a given amount of time is called
(A) Noise
(B) Power
(C) Frequency
(D) Bandwidth
In TV transmission, picture signal is modulated.
(A) DSB-SC
(B) VSB
(C) SSB-SC
(D) Pulse
India’s navigational satellite system is known as
(A) GPS
(B) GLONASS
(C) BeiDou
(D) IRNSS
The golden rice contains
(A) Vitamin A
(B) Vitamin C
(C) Vitamin E
(D) Vitamin D
The Btcotton is a transgenic crop with gene transfer from
(A) virus
(B) bacteria
(C) fungi
(D) algae

WBCS Main Question Paper – 2018

Which is the first space ship to orbit the moon?
a) Luna 10(1966, USSR)
b) Zond-5
c) Lunakhod-1
d) Soyuz-28
Which is the India’s first nuclear powered Submarine?
a) INS Kalvari
b) INS Sindhuraj
c) INS Chakra
d) INS Arihant
IC in computer stands for
a) Internal Circuits
b) Integrated Circuits
c) Integrated Current
d) Integrated Charge
What is the full form of “VIRUS” ?
(A) Various Information Resources Under Stage
(B) vital Information Resources Under Siege
(C) Various Information Resource Unlimited Storage
(D) Vital Images Reviews Universal Studios
What is the full form of “RADAR” ?
(A) Radio Device and Ranging
(B) Region Device and Ranging
(C) Radio Detecting and Ranging
(D) Radio Detect and Ranges
What is the full form of “ISRO”?
a) Indian Satellite Research Organisation
b) Indian Solar Research Organisation
c) Indian Site Research Organisation
d) Indian Space Research Organisation

WBCS Main Question Paper – 2017

What, among the following, is India’s first Anit-submarine warfare
corvette ?
(A) INS Kamorta
(B) Naval version of Light Combat Aircraft (LCA)
(C) INS Shivalik
(D) INS Shakti
When was PSLV-C 15 launched successfully ?

(A) January 30,2011

(B) June 5,2011
(C) July 12,2010
(D) May 10, 2010

A geostationary satellite has an orbital period of
(A) 2 hours
(B) 6 hours
(C) 12 hours
(D) 24 hours
When was India’s first scientific expedition to the South Pole launched ?
(A) February, 2010
(B) May, 2016
(C) July, 2010
(D) June, 2014
An atomic power station is located in
(A) Hyderabad
(B) Bengaluru
(C) Kalpakkam
(D) Trivandrum
What is software ?
(A) A type of computer code
(B) A computer language
(C) A set of instructions for your computer
(D) A cover for the computer
The operating system is the most common type of ______ software.
(A) System
(B) Communication
(C) Application
(D) None of the above
A computer cannot boot if it does not have the
(A) compiler
(B) loader
(C) operating system
(D) assembler
PARAM was developed by
(A) IIT Kanpur
(B) C-DAC
(C) IIT Kharagpur
(D) None of the above
Pasteurization of milk in Dairy farm is conducted by
(Microwave volumetric heating)
(A) Ozone
(B) UV rays
(C) Chlorine
(D) Microwave
For television broadcasting, the frequency range employed normally
varies from
(A) 30 – 300 MHz
(B) 30 – 300 GHz
(C) 30 – 300 kHz
(D) 30 – 300 Hz
Modern communication systems are based on
(A) Analog circuits
(B) Digital circuits
(C) Combination of Ȧ analog and digital circuits
(D) None of the above
A transistor is made of
(A) doped semiconductors
(B) intrinsic semiconductors
(C) a metal piece sandwiched between two intrinsic semiconductors
(D) None of the above
A carbon microphone is best used in
(A) Dynamo
(B) Telephone
(C) Transformer
(D) None of the above
The technique used to transmit audio signal in television broadcasting
is
(A) amplitude modulation
(B) frequency modulation
(C) pulse code modulation
(D) time division multiplexing

WBCS Main Question Paper – 2016

Which one of the following is the web search engine ?
(A) Aliweb
(B) Jughead
(C) Baidu
(D) All of these
Which one of the following persons invented the world’s first digital and
programmable robot ?
(A) George Devel
(B) Hisashige Tanaka
(C) Korel Capek
(D) Joseph Engel Berger
Spam is related to –
(A) Computer
(B) Art
(C) Music
(D) Game
Which one of the following internet protocol version is the most deployed
internet layer protocal ?
(A) IPV2
(B) IPV4
(C) IPV6
(D) IPV8
Junk e-mail is also called –
(A) Spoof
(B) Spool
(C) Sniffer Script
(D) Spam
Which one of the following is a set of program instruction that can attach
itself to a file, reproduces itself and spread to other file ?
(A) Computer worm
(B) Computer virus
(C) Trojan horse
(D) Phising Scam
Which one of the following is the most common picking device of the
graphic application ?
(A) Graphic tablet
(B) Joystick
(C) Mouse
(D) Light Pen
The frequency band used for radar relay system and television is –
(A) VLF
(B) UHF
(C) VHF
(D) EHF
Which of the following satellites is used in ship to shore, shore to shore
and shore to ship communication ?
(A) Marisat (USA, 1973)
(B) Comsat
(C) Telestar
(D) Intelsat
Which of the following is the first state in India to have 3G services of
Telecommunication ?
(A) Maharashtra
(B) Bihar
(C) Uttar Pradesh
(D) Andhra Pradesh
WIMAX is related to which one of the following ?
(A) Biotechnology
(B) Space Technology
(C) Missile Technology
(D) Communication Technology

12.Which of the following is not the term of Information Technology ?
(A) Cyber Space
(B) Upload
(C) Modem
(D) Light Storage

Which of the following countries firstly deployed 4G system of mobile
telecommunication in world ?
(A) South Korea
(B) Japan
(C) United States
(D) England
Which one of the following computer operating system (OS) is the most
commonly used in the Top- 500 super computers of the world ?
(A) Unix OS
(B) Linux OS
(C) Lisa OS
(D) Mac OS
Which one of the following application is commonly used to prepare a
presentation or slide show ?

(A) Photoshop
(B) PowerPoint
(C) Internet explorer
(D) Outlook express

What is the function of the Microsoft office word ?
(A) An operating system
(B) A downloading application software
(C) A word processing software
(D) An input device
Which one of the following discs is used to cold boot a computer ?
(A) Set up disc
(B) Program disc
(C) Diagnostic disc
(D) System disc
Long distance short wave radio broadcasting uses –
(A) Direct wave
(B) Sky wave
(C) Ionospheric wave
(D) Ground wave
Which one of the following devices has installed Wi-Fi devices in its
system ?
(A) Smartphone
(B) Video Game consoles
(C) Computer Printers
(D) All of these
Which of the following Television display is working on the principle of
semiconductor ?
(A) Plasma display
(B) Liquid Crystal display
(C) Light emitting diode display (LED)
(D) None of these
Who had coined the term television at the first International Electricity
congress held in Paris ?
(A) Paul Nipkow
(B) Constantin Perskyi
(C) J J Thompson
(D) Henry Patrick
LEC or Light Emitting Electrochemical Cell is a different mode of
operation of —
(A) LEDS
(B) CRTS
(C) LCDS
(D) OLEDS
From which of the following GSM technologies, the LTE (Long Term
Evolution) is made to the enhancement of telecommunication ?

(A) Wi Man
(B) CDMA
(C) UMTS
(D) HSDPA

Which one of the following sold the world’s first mobile television MTV-1?
(A) Clive Sinclair
(B) George Shapiro
(C) Clive Clinton
(D) William Gladstone
Which of the following electromagnetic waves is used by the Bluetooth
to exchange data over short distances ?
(A) Microwaves
(B) Radio Waves
(C) X-rays
(D) UV-rays
Which of the following companies launched the 3G mobile
telecommunication for the first time in the world ?
(A) Nextle in the United States
(B) NTT DoCoMo (Japan)(1998)
(C) Telus Mobility (Canada)
(D) Bharati Airtel in India
Which of the following is the web browser ?
(A) Google Chrome
(B) Safari
(C) Opera
(D) All of these
Intelsat satellite is used for –
(operated from 1964 to 2001)
(A) radar communication
(B) radio communication
(C) Intercontinental communication
(D) None of the above
Modem is a device used for –
(A) converting analog signals to digital signals
(B) modulating signals
(C) Either of the above
(D) None of the above
Which one of the following computers is the world’s first commercial
computer ?
(A) Feffanti Mark-1
(B) Mark-1 star
(C) UNIVAC-1 (USA in 1951)
(D) IBM-704
What frequency range of EM waves are used for commercial FM radio
?
(A) 88 MHz to 108 MHz
(B) 88 GHz to 108 GHz
(C) 88 kHz to 108 kHz
(D) None of these
Which one of the following displays is not the volatile television display ?
(A) Plasma
(B) Liquid Crystal Display
(C) Organic light Emitting Diode
(D) Cholesteric Display
Which one of the following languages is not the scripting language ?
(A) Java scripts
(B) Pytheon
(C) Perl
(D) Lisp

34, Who is referred to as the ‘Father of SMS’ ?
(A) Jamie Lannister
(B) Ross Bolton
(C) Matti Makkonen
(D) None of them

Who has created the high level programming language for the first
time for computers ?
(A) Konord Lorenz
(B) Konard Zuse (1943-45)
(C) Mario Johnson
(D) Henry Gladstone
Which one of the following computer scientists firstly used the term
‘bits‘ ?
(A) George Jonhansen
(B) Cliff Berry
(C) John Atanassoff
(D) Claude E Shannon
Which one of the following memories is not non-volatile computer
memory ?
(A) PRAM
(B) SRAM
(C) Flash Memory
(D) Bubble Memory

WBCS Main Question Paper – 2015

Which of the following laser types is used in a laser printer
(A) Dye laser
(B) Gas laser
(C) Semiconductor laser
(D) Excimer laser
A term associated with comparison of processing speed
(A) MPG
(B) CPS
(C) MIPS
(D) None of the above
India’s ‘Silicon Valley’ is located in
(A) Kerala
(B) Rajasthan
(C) Karnataka
(D) Tamilnadu
‘LASER Printer’ are an example of_____________
(A) Line printers
(B) Dot- Matrix printer
(C) Page Printer
(D) None of the above
Encoder is a
(A) Integrated circuit
(B) Digital circuit
(C) VLSI
(D) IC chips
What is the Galileo Project?
(A) An inter-country Program of missile shield developed by the U.S.A
(B) A project developed by India with assistance from Canada
(C) An environmental protection project being developed by Japan
(D) A multi satellite navigation project developed by the European
union
NASA’s Deep Impact Space Mission was employed to take detailed
pictures of which comet nucleus?
(A) Halley’s comet
(B) Hale Bopp
(C) Hyakutake
(D) Tempel-1(2005)
Which one of the following is a space craft?
(A) Apohis
(B) Cassini
(C) Spitzer
(D) Tech sar
An artificial satellite orbiting around the earth does not fall down because
the attraction of earth
(A) does not exist in such distance
(B) Is neutralised by the attraction of the moon
(C) Provides the necessary speed for its steady motion
(D) Provides the necessary acceleration for its motion
‘Eugenics’ is the of _______
(A) People of European origin
(B) Genetics of Plants
(C) Different races of mankind
(D) Altering human beings by changing their genetic components.

WBCS Main Question Paper – 2014

The technique of MRI uses the phenomenon of
(Magnetic resonance imaging)
(A) Nuclear Magnetic Resonance
(B) Electron Cyclotron Resonance
(C) Optical Resonance
(D) Microwave Resonance
In Bt Cotton, Bt stands for
(A) Bacillus thermoglucosidasius
(B) Bacillus thuringiensis
(C) Bacterium tenericutes
(D) Terminator Bacteria
In computers, the storage medium which cannot usually be modified is known as
(A) ROM
(B) RAM
(C) Hard disk
(D) Flash drive
The acronym CCD stands for
(A) charge coupled device
(B) control circuit device
(C) credit card device
(D) configuration control device
The gas that India’s Mars Mission is looking for as evidence of life is
(A) oxygen
(B) methane
(C) carbon dioxide
(D) sulphur dioxide
Microwave ovens heat water in food because
(A) water is a polar molecule
(B) the heat capacity of water is high
(C) water flows easily
(D) water molecule is small
The mode in which a digital adder involving logic gates add data is
(A) binary
(B) octal
(C) decimal
(D) hexadecimal
The abbreviation ‘http’ stands for
(A) HTML Transfer Technology Process
(B) Hyperspase Terms and Tech Protocol
(C) Hyperspace Techniques Tech Progress
(D) Hyper Text Transfer Protocol
The following is not a programming language
(A) C++
(B) JAVA
(C) Office Suite
(D) Fortran
MRI stands for
(A) Magnetic Resonance Imaging
(B) Magnetic Reflection Imaging
(C) Machine Readable Imaging
(D) Mechanical Reading Instrument
The number of bits in a byte is
(A) 2
(B) 4
(C) 8
(D) 16

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