prelims 2020






UPSC PRELIMS 2020 STUDY PLAN  (Click Here For Full Timetable)




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Science and Technology- Day 39 Quiz (Click Here)



1. Consider the following statements regarding Bhuvan.

  1. Bhuvan is a satellite mapping tool closely resembling Google Maps
  1. Bhuvan has been indigenously developed by DRDO

Select the correct statement using the codes given below.

  • a. 1 only
  • b. 2 only
  • c. Both 1 & 2
  • d. Neither 1 nor 2


2. Consider the following statements

  1. Ground Level Ozone reflects UV Rays and helps in preventing skin cance
  2. Ground Level ozone increases during summer season

Select the correct statement using codes given below

  • a. 1 only
  • b. 2 only
  • c. Both 1 and 2
  • d. Neither 1 nor 2


3. To create lesser e-waste, wireless charging has emerged as a promising solution. Wireless charging works on the principle of
  • a. Li-Fi
  • b. Electromagnetic induction
  • c. LASER
  • d. Wi-Fi


4. Consider the following statements about Rechargeable Magnesium Battery?

  1. It is a substitute to Lead Acid Battery.
  1. Consists of natural graphite as cathode and magnesium as anode.
  1. Battery’s life is self-renewing.

Which of the following statements is/are not correct?

  • a. 1 only
  • b. 1 and 2 only
  • c. 3 only.
  • d. None of the above


5. Which of the following statements is/are correct regarding Ayurveda , Yoga and Naturopathy, Unani , Siddha and Homoeopathy ( AYUSH)?

  1. AYUSH is an autonomous body, which functions as a Department under the Ministry of Health and Family Welfare.
  1. There has been a resurgence of AYUSH due to the increase in life style disorders and multi drug resistant diseases.
  1. AYUSH has launched National AYUSH Mission (NAM) during 12th Five Year Plan, to promote AYUSH medical systems through cost effective AYUSH services and strengthening of educational systems.

Select the correct answer using the code given below

  • a. 2 and 3
  • b. 3 only
  • c. 1, 2 and 3
  • d. 1 only


6. Consider the following statements

  1. Recently launched, GSAT-6 is a communication satellite of India
  1. It will provide national security and law enforcement agencies, a secured satellite telephony service, through S-Band communication services.
  1. It will provide multimedia and broadcasting services through C-Band communication services.

Select the correct code

  • a. Only 1
  • b. 2 and 3
  • c. Only 2
  • d. 1, 2 and 3


7. Consider the following

  1. A graveyard orbit, also called a junk orbit or disposal orbit, is a super synchronous orbit that lies significantly below synchronous orbit, where spacecraft are intentionally placed at the end of their operational life.
  1. A graveyard orbit is used when the change in velocity required to perform a de-orbit maneuver is too low

Select the correct statement/s

  • a. Only 1
  • b. Only 2
  • c. Both
  • d. None


8. The introduction of this element gave a huge blow to the indigo industry and led to its decline
  • a. PUV
  • b. Synthetic Dye
  • c. Paraffin
  • d. Jute


9. Consider the following statements regarding PSLV

  1. PSLV is capable of launching 1600 kg satellites in 620 km geo-synchronous transfer orbit (GTO) and 1050 kg satellite in sun-synchronous polar orbit
  1. PSLV has launched many foreign satellites such as SARAL-ARGOS and ALTIKA.
  1. PSLV has four stages using solid and liquid propulsion systems alternately.

Select the correct codes

  • a. 1, 2 and 3
  • b. 2 and 3
  • c. 1 and 2
  • d. All


10. Consider the following

  1. IRS series
  4. IRNSS
  5. INSAT Series
  6. GAGAN
  • a. 1, 3, 4, 5 and 6
  • b. 2, 4 and 6
  • c. 4 and 6
  • d. 2, 4 and 6


11. Consider the following statements regarding Mars Orbiter Mission

  1. Mars Orbiter spacecraft is India’s first interplanetary spacecraft as well as the first indigenous spacecraft to planet Mars.
  1. The spacecraft carries four payloads – Mars Colour Camera, Thermal Infrared Imaging Spectrometer, Methane Sensor for Mars and Mars Exospheric Neutral Composition Analyser.

Which of the above statements is/are incorrect?

  • a. 1 only
  • b. 2 only
  • c. None
  • d. Both


12. IRNSS is an independent regional navigation satellite system being developed by India. Consider the following statements regarding IRNSS

  1. IRNSS will provide two types of services, namely, Standard Positioning Service (SPS) which is provided to all the users and Restricted Service (RS), which is an encrypted service provided only to the authorized users.
  1. Application of IRNSS includes Vehicle tracking and fleet management, Integration with mobile phones and Precise Timing.
  1. The IRNSS space segment consists of six satellites, with three satellites in geostationary orbit and three satellites in inclined geosynchronous orbit.

Select the correct statement/s based on given code

  • a. 1 and 2
  • b. 1, 2 and 3
  • c. 2 and 3
  • d. Only 1


13. Consider the following statements

  1. Operate about 8000-20000km above the earth
  1. Basically used for communication satellites
  1. They are placed in an elliptical orbit.
  1. Examples include GPS and Global Communication and Orblink Identify the type of orbit based on given statements?
  • a. Low Earth Orbit
  • b. Medium Earth Orbit
  • c. Geo Earth Orbit
  • d. None


14. Consider the following statements

  1. National Solar Mission has a target of adding 20,000 MW of solar power by 2022.
  1. Government requires domestic content requirement for solar companies to avail government subsidies.

Select the correct statements using the codes given below

  • a. 1 only
  • b. 2 only
  • c. Both 1 and 2
  • d. Neither 1 nor 2


15.  Genetically Modified mosquiotoes have been in news recently for fighting diseases like Malaria and Dengue.Consider the following statements regarding the same –

  1. The modified mosquitoes do not carry the virus of diseases and thus prevent spread of disease.
  1. The modifed mosquitoes predate on malaria causing mosquitoes.
  1. They contain toxins that are lethal to malaria and other virus.
  1. They pass on the genes that make their offsprings unable to mate or mature

Select the correct statements using the codes given below

  • a. 2 only
  • b. 4 only
  • c. 2 and 4 only
  • d. 1 and 3 only


16. Arrange the following in increasing order of electromagnetic frequency :

  1. X Ray
  1. Gamma Rays
  1. Ultraviolet ray
  1. Infrared rays
  1. Microwave

Select the correct answer using the codes given below:

  • a. 2, 1, 3, 4, 5
  • b. 1, 2, 3, 4, 5
  • c. 2, 1, 4, 3, 5
  • d. 1, 2, 4, 3, 5


17. Consider the following statements:

  1. Solar flares can produce solar winds that may cause radiation hazards to astronauts.
  2. Solar flares impact the electromagnetic field of the earth that may affect satellites and power grids.
  3. Solar flares, as a phenomenon, are observed only during solar eclipse.

Select the correct statements using the codes given below

  • a. 1 only
  • b. 1 and 2 only
  • c. 2 and 3 only
  • d. All of the above


18. Which of the following statements regarding Organic LED (OLED) is not correct?

  1. Unlike LEDs, OLEDs emit light and do not require a backlight.
  1. Lifespan of an OLED display is more than that of LED or LCD display.
  1. OLEDs are thinner than LEDs.
  1. OLEDs can be used to create curved, flexible and transparent displays. Select the correct statements using the codes given below.
  • a. 1 and 2 only
  • b. 2, 3 and 4 only
  • c. 1, 3 and 4 onlyc
  • d. 1, 2, 3 and 4 only


19. Consider the following statements:

  1. Innovation in Science Pursuit for Inspired Research (INSPIRE) is an innovative program to attract youth to Science at an early age.
  1. INSPIRE program is sponsored and managed by Ministry of Human Resources and Development.
  1. One of the goals of INSPIRE program is to build a critical human resource pool for Science & Technology system
  • a. 1 & 2 only
  • b. 2 & 3 only
  • c. 1 & 3 only
  • d. All of the above


20. NASA’s Fermi Mission is aimed at understanding

  1. Earth’s geological structure.
  2. Role of exo-planets in providing a habitable space on earth.
  3. Search for signs of new laws of physics and what composes the mysterious Dark Matter.

Select the correct answer using the codes below.

  • a. 1 only
  • b. 2 and 3 only
  • c. 3 only
  • d. None of the above


21. “Northern blot” is a laboratory method used to
  • a. Determine the hereditary lineages in forensic investigation
  • b. Examine changes in plant physiology
  • c. Copy the information from one strand of genome to the other
  • d. Detect specific RNA molecules among a mixture of RNA


22. “Einstein Ring” can be observed when

  • a. All planets in the solar system fall in a common line
  • b. A pair of distant galaxies from earth aligns in a special position with respect to earth
  • c. Solar eclipse is just about to end
  • d. Volcanic eruptions occur at the craters of the Jovian planets


23. Optically-Stimulated Luminescence is a dating technique that is used to find out
  • a. The last time quartz or feldspar sediment was exposed to light
  • b. Radiation emitted by antecedent water bodies
  • c. Age of tree barks by exposing them to ionizing radiation
  • d. Duration of photons incident on any surface


24. “Carbfix project” is concerned with

  • a. Unearthing gas hydrates trapped at the Ocean floor
  • b. Locking away atmospheric CO2 by reacting it with basaltic rocks
  • c. Reducing the methane emissions of rice fields and wetlands
  • d. Using geo-engineering to reduce the albedo of Polar Ice


25. Coradia iLint” is?
  • a. It is the first interstellar mission launched by NASA.
  • b. It is world’s first hydrogen-powered and zero-emission passenger train.
  • c. It used nano-technology successfully for carbon dating of ancient monuments.
  • d. It is a new biometric identity technology developed by BARC.