Computer, Technology & India – WBCS Main Question Paper

Computer, Technology & India - WBCS Main Question Paper
wbcs main science and technology question paper

WBCS Main Question Paper – 2019

24. Where is Vikram Sarabhai Space Centre?
(A) Bengaluru
(B) Sriharikota
(C) Baleswar
(D) Thiruvananthapuram
 
25. Indira Gandhi Centre for Atomic Research is located in
(A) Kolkata
(B) Kalpakkam
(C) Mumbai
(D) Hyderabad
 
26. 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
 
129. 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
 
130. 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
 
132. WAN hardware includes
(A) Multiplexors and routers
(B) EDF
(C) Bridger and modems
(D) Removable disc
 
133. Which one is the first search engine in Internet?
(A) Google
(B) Archie
(C) Altavista
(D) WAIS
 
134. Which one programming language is used for artificial intelligence?
(A) C
(B) Java
(C) J2EE
(D) Prolog
 
135. A dual layer Blue-ray disc can store data upto
(A) 20 GB
(B) 30 GB
(C) 40 GB
(D) 50 GB
 
189. India’s navigational satellite system is known as
(A) GPS
(B) GLONASS
(C) BeiDou
(D) IRNSS
 
196. Data transmitted or a given amount of time is called
(A) Noise
(B) Power
(C) Frequency
(D) Bandwidth
 
197. In TV transmission, picture signal is modulated.
(A) DSB-SC
(B) VSB
(C) SSB-SC
(D) Pulse
 
169. The golden rice contains
(A) Vitamin A
(B) Vitamin C
(C) Vitamin E
(D) Vitamin D
 
170. The Btcotton is a transgenic crop with gene transfer from
(A) virus
(B) bacteria
(C) fungi
(D) algae
 
 

WBCS Main Question Paper – 2018

42. IC in computer stands for
a) Internal Circuits
b) Integrated Circuits
c) Integrated Current
d) Integrated Charge
 
108. Which is the first space ship to orbit the moon?
a) Luna 10(1966, USSR)
b) Zond-5
c) Lunakhod-1
d) Soyuz-28
 
128. Which is the India’s first nuclear powered Submarine?
a) INS Kalvari
b) INS Sindhuraj
c) INS Chakra
d) INS Arihant
 
139. 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
 
179. 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
 
180. 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
 
 

WBCS Main Question Paper – 2017

61. An atomic power station is located in
(A) Hyderabad      
(B) Bengaluru        
(C) Kalpakkam
(D) Trivandrum
 
3. When was India’s first scientific expedition to the South Pole launched ?
(A) February, 2010      
(B) May, 2016      
(C) July, 2010      
(D) June, 2014
 
5. 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
 
10. When was PSLV-C 15 launched successfully ?
(A) January 30,2011    
(B) June 5,2011      
(C) July 12,2010
(D) May 10, 2010
 
170. Pasteurization of milk in Dairy farm is conducted by
(Microwave volumetric heating)
(A) Ozone        
(B) UV rays       
(C) Chlorine       
(D) Microwave
 
185. 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
 
186. The operating system is the most common type of ______ software.
(A) System
(B) Communication     
(C) Application     
(D) None of the above

187. A computer cannot boot if it does not have the
(A) compiler      
(B) loader       
(C) operating system
(D) assembler
 
188.  PARAM was developed by
(A) IIT Kanpur       
(B) C-DAC
(C) IIT Kharagpur      
(D) None of the above
 
189. 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
 
190. 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
 
191. 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
 
193. A carbon microphone is best used in
(A) Dynamo       
(B) Telephone
(C) Transformer      
(D) None of the above
 
200. 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

1. Which one of the following internet protocol version is the most deployed internet layer protocal ?
(A) IPV2        
(B) IPV4
(C) IPV6      
(D) IPV8
 
2. Which one of the following is the web search engine ?
(A) Aliweb       
(B) Jughead       
(C) Baidu         
(D) All of these
 
3. 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
 
4. Spam is related to –
(A) Computer
(B) Art       
(C) Music      
(D) Game
 
5. Junk e-mail is also called –
(A) Spoof        
(B) Spool       
(C) Sniffer Script        
(D) Spam
 
6. 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
 
7. 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
 
9. The frequency band used for radar relay system and television is –
(A) VLF      
(B) UHF
(C) VHF      
(D) EHF
 
10. 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
22. 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
 
23. WIMAX is related to which one of the following ?
(A) Biotechnology      
(B) Space Technology     
(C) Missile Technology      
(D) Communication Technology
 
24. Which of the following is not the term of Information Technology ?
(A) Cyber Space       
(B) Upload       
(C) Modem        
(D) Light Storage
 
25. Which of the following countries firstly deployed 4G system of mobile telecommunication in world ?
(A) South Korea
(B) Japan       
(C) United States      
(D) England
 
32. 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
 
33. 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
 
34. 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
 
35. 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
 
36. Long distance short wave radio broadcasting uses –
(A) Direct wave       
(B) Sky wave
(C) Ionospheric wave      
(D) Ground wave
 
37. 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
38. 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
 
39. 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
 
40. Which one of the following sold the world’s first mobile television MTV-1 ?
(A) Clive Sinclair      (UK – 1977)
(B) George Shapiro        
(C) Clive Clinton      
(D) William Gladstone
 
41. LEC or Light Emitting Electrochemical Cell is a different mode of operation of
(A) LEDS        
(B) CRTS        
(C) LCDS          
(D) OLEDS
 
42. From which of the following GSM technologies, the LTE (Long Term Evolution) is made to the enhancement of telecommunication ?
(GSM/UMTS & CDMA2000 networks)
(A) Wi Man         
(B) CDMA       
(C) UMTS
(D) HSDPA
 
43. Which of the following electromagnetic waves is used by the Bluetooth to exchange data over short distances ?
(A) Microwaves     (0.3 to 300 GHz)   
(B) Radio Waves        
(C) X-rays       
(D) UV-rays
 
44. Which of the following companies launched the 3G mobile telecommunication for the first time in the world ?
(3G India – MTNL in 2008, 4G – Airtel in 2012)
(A) Nextle in the United States
(B) NTT DoCoMo (Japan)(1998)
(C) Telus Mobility (Canada)
(D) Bharati Airtel in India
 
45. Which of the following is the web browser ?
(A) Google Chrome        
(B) Safari       
(C) Opera         
(D) All of these
 
46. Intelsat satellite is used for –
(operated from 1964 to 2001)
(A) radar communication 
(B) radio communication
(C) Intercontinental communication
(D) None of the above
 
48. 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
56. 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
 
58. 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
 
63. 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
 
74. Which one of the following languages is not the scripting language ?
(A) Java scripts 
(B) Pytheon 
(C) Perl
(D) Lisp
 
75, Who is referred to as the ‘Father of SMS’ ?
(A) Jamie Lannister       
(B) Ross Bolton       
(C) Matti Makkonen
(D) None of them
 
106. 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
 
108. 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
 
121. 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

4. Which of the following laser types is used in a laser printer
(A) Dye laser
(B) Gas laser
(C) Semiconductor laser
(D) Excimer laser
 
28. A term associated with comparison of processing speed
(A) MPG
(B) CPS
(C) MIPS
(D) None of the above
 
29. India’s ‘Silicon Valley’ is located in
(A) Kerala
(B) Rajasthan
(C) Karnataka
(D) Tamilnadu
 
30. ‘LASER Printer’ are an example of_____________
(A) Line printers
(B) Dot- Matrix printer
(C) Page Printer
(D) None of the above
 
31. Encoder is a
(A) Integrated circuit
(B) Digital circuit
(C) VLSI
(D) IC chips
 
46. 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
 
48. 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)
 
49. Which one of the following is a space craft?
(A) Apohis
(B) Cassini
(C) Spitzer
(D) Tech sar
 
50. 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
 
151. ‘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

22.  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
 
23.  In Bt Cotton, Bt stands for
(A) Bacillus thermoglucosidasius      
(B) Bacillus thuringiensis
(C) Bacterium tenericutes       
(D) Terminator Bacteria
 
24.  In computers, the storage medium which cannot usually be modified is known as
(A) ROM
(B) RAM       
(C) Hard disk      
(D) Flash drive
 
25.  The acronym CCD stands for
(A) charge coupled device
(B) control circuit device
(C) credit card device      
(D) configuration control device
 
26.  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
 
32.  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
 
34.  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
 
35.  The following is not a programming language
(A) C++       
(B) JAVA       
(C) Office Suite
(D) Fortran
 
37.  The number of bits in a byte is
(A) 2      
(B) 4       
(C) 8
(D)  16
 
38. The mode in which a digital adder involving logic gates add data is
(A) binary
(B) octal      
(C) decimal       
(D) hexadecimal
 
87.  MRI stands for
(A) Magnetic Resonance Imaging
(B) Magnetic Reflection Imaging
(C) Machine Readable Imaging
(D) Mechanical Reading Instrument
 
 

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