Insectivorous Plants |  Causes of Revolt of 1857 in Points |  Ordinance Making Power of President and Governors |  Mangroves Cover in India |  Coral Reefs in India |  Seasons and Climate in India |  Constitutional and Statutory Bodies in India |  Rock Edicts of Ashoka |  Types of Motions in Parliamentary Procedure |  Types of Majorities in Parliament |  Pressure Groups in World and India |  Order of Precedence |  Types of Rocks |  Treaties in Indian History |  Types of Rocks |  Features of Indian Economy |  Geographical Indications |  Ancient History Terminology and Meanings |  Schedules of the Constitution |  Nuclear Power Plants in India List  |  Types of Clouds for SSC CGL | Nuclear Power Plants in India ListTypes of Ocean CurrentsStructure: Layers of EarthAPPSC Group 1 Answer KeySSC JE 2017 QUESTION PAPEROne Word Substitution for SSC and Bank ExamsMPSC Answer Key 2017 2017Layers of AtmosphereMPSC Answer Key 2017 2017BPSC Solved Question Paper 2017MPPSC Solved Question Paper 2017GST Bill IndiaDelhi SultanateLaw Commission of IndiaOscar Awards Winner 2017 ListDiseases in CropsCommon Drugs and UsesDifferent Types of Deserts in WorldUPSC Civil Services Exam-2016 Answer KeyUPSC CAPF Exam-2016 Answer Key | UPPSC UPPER Subordinate Exam-2016 Answer Key | Regulatory BodiesNational Parks in India | International Airports in India  | United Nation International Years National Highways | National Birds of Countries | Sessions of Congress  | Facts About Kerala
Tropical Deciduous Forest |  Hoolock Gibbon: National Parks |  Sectors of Indian Economy |  How Legislative Council is Formed |  Insectivorous Plants |  Causes of Revolt of 1857 in Points |  Ordinance Making Power of President and Governors |  Mangroves Cover in India |  Coral Reefs in India |  Seasons and Climate in India |  Constitutional and Statutory Bodies in India |  Rock Edicts of Ashoka |  Types of Motions in Parliamentary Procedure |  Types of Majorities in Parliament |  Pressure Groups in World and India |  Order of Precedence |  Types of Rocks |  Treaties in Indian History |  Types of Rocks |  Features of Indian Economy |  Geographical Indications |  Ancient History Terminology and Meanings |  Schedules of the Constitution |  Nuclear Power Plants in India List  |  Types of Clouds for SSC CGL | Nuclear Power Plants in India ListTypes of Ocean CurrentsStructure: Layers of EarthAPPSC Group 1 Answer KeySSC JE 2017 QUESTION PAPEROne Word Substitution for SSC and Bank ExamsMPSC Answer Key 2017 2017Layers of AtmosphereMPSC Answer Key 2017 2017BPSC Solved Question Paper 2017MPPSC Solved Question Paper 2017GST Bill IndiaDelhi SultanateLaw Commission of IndiaOscar Awards Winner 2017 ListDiseases in CropsCommon Drugs and UsesDifferent Types of Deserts in WorldUPSC Civil Services Exam-2016 Answer KeyUPSC CAPF Exam-2016 Answer Key | UPPSC UPPER Subordinate Exam-2016 Answer Key | Regulatory BodiesNational Parks in India | International Airports in India  | United Nation International Years 
Ordinance Making Power of President and Governors |  Mangroves Cover in India |  Coral Reefs in India |  Seasons and Climate in India |  Constitutional and Statutory Bodies in India |  Rock Edicts of Ashoka |  Types of Motions in Parliamentary Procedure |  Types of Majorities in Parliament |  Pressure Groups in World and India |  Order of Precedence |  Types of Rocks |  Treaties in Indian History |  Types of Rocks |  Features of Indian Economy |  Geographical Indications |  Ancient History Terminology and Meanings |  Schedules of the Constitution |  Nuclear Power Plants in India List  |  Types of Clouds for SSC CGL | Nuclear Power Plants in India ListTypes of Ocean CurrentsStructure: Layers of EarthAPPSC Group 1 Answer KeySSC JE 2017 QUESTION PAPEROne Word Substitution for SSC and Bank ExamsMPSC Answer Key 2017 2017Layers of AtmosphereMPSC Answer Key 2017 2017BPSC Solved Question Paper 2017MPPSC Solved Question Paper 2017GST Bill IndiaDelhi SultanateLaw Commission of IndiaOscar Awards Winner 2017 ListDiseases in CropsCommon Drugs and UsesDifferent Types of Deserts in WorldUPSC Civil Services Exam-2016 Answer KeyUPSC CAPF Exam-2016 Answer Key | UPPSC UPPER Subordinate Exam-2016 Answer Key

Tuesday, 23 May 2017

Science & Technology Questions asked in UPSC Exam Yearwise

  MOHAMMAD ZEESHAN       Tuesday, 23 May 2017

Science and Technology Questions

SCIENCE & TECHNOLOGY PREVIOUS YEAR QUESTIONS ( UPSC PRELIMS)

2016
1. With reference to ‘LiFi’, recently in the news, which of the following statement is/are correct?
  1. It uses light as the medium for high speed data transmission.
  2. It is a wireless technology and is several times faster than ‘WiFi’.
 Select the correct answer using the code given below.
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

2. In the context of the developments in Bioinformatics, the term ‘transcriptome’, sometimes seen in the news, refers to
(a) a range of enzymes used in genome editing
(b) the full range of mRNA molecules expressed by an organism
(c) the description of the mechanism of gene expression
(d) a mechanism of genetic mutations taking place in cells

3. Project Loon”, sometimes seen in the news, is related to
(a) waste management technology
(b) wireless communication technology
(c) solar power production technology
(d) water conservation technology

4. Which one of the following is the best description of ‘INS Astradharini’, that was in the news recently?
(a) Amphibious warfare ship
(b) Nuclear-powered submarine
(c) Torpedo launch and recovery vessel
(d) Nuclear-powered aircraft carrier

5. What is ‘Greased Lightning-10 (GL-10)’, recently in the news?
(a) Electric plane tested by NASA
(b) Solar-powered two-seater aircraft designed by Japan
(c) Space observatory launched by China
(d) Reusable rocket designed by ISRO

6. With reference to ‘Bitcoins’, sometimes seen in the news, which of the following statements is/are correct?
1. Bitcoins are tracked by the Central Banks of the countries.
2. Anyone with a Bitcoin address can send and receive Bitcoins from anyone else with a Bitcoin address.
3. Online payments can be sent without either side knowing the identity of other.
Select the correct answer using the code given below.
(a) 1 and 2 only (b) 2 and 3 only (c) 3 only (d) 1, 2 and 3

7. India is an important member of the ‘International Thermonuclear Experimental Reactor’. If this experiment succeeds, what is the immediate advantage for India?
(a) It can use thorium in place of uranium for power generation
(b) It can attain a global role in satellite navigation
(c) It can drastically improve the efficiency of its fission reactors in power generation
(d) It can build fusion reactors for power generation

8. Regarding ‘DigiLocker’ sometimes seen in the news, which of the following statements is/are correct?
1. It is a digital locker system offered by the Government under Digital India Programme.
2. It allows you to access your e-documents irrespective of your physical location.
Select the correct answer using the code given below
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

9. With reference to ‘Astrosat’ the astronomical observatory launched by India, which of the following statements is/are correct?
1. Other than USA and Russia, India is the only country to have launched a similar observatory into space.
2. Astrosat is a 2000 kg satellite placed in an orbit at 1650km above the surface of the Earth.
Select the correct answer using the code given below
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

10. Consider the following statements:
The Mangalyaan launched by ISRO
1. Is also called the Mars Orbiter Mission.
2. Made India the second Country to have a Spacecraft orbit the Mars after USA.
3. Made India the only country to be successful in making its spacecraft orbit the Mars in its very first attempt
 Which of the statements given above is//are correct?
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

11. A recent movie titled The Man Who Knew infinity is based on the biography of
(a) S. Ramanujan
(b) S. Chandrasekhar
(c) S.N.Bose
(d) C.V. Raman

2015
1. In which of the following activities are Indian Remote Sensing (IRS) satellites used?
1. Assessment of crop productivity
2. Locating groundwater resources
3. Mineral exploration
4. Telecommunications
5. Traffic studies
Select the correct answer using the code given below.
(a) 1, 2 and 3 only (b) 4 and 5 only (c) 1 and 2 only (d) 1, 2, 3, 4 and 5

2. The term ‘IndARC’, sometimes seen in the news, is the name of
(a) an indigenously developed radar system inducted into Indian Defence
(b) India’s satellite to provide services to the countries of Indian Ocean Rim
(c) a scientific establishment set up by India in Antarctic region
(d) India’s underwater observatory to scientifically study the Arctic region

3. Which of the following statements is/are correct regarding National Innovation Foundation-India (NIF)?
1. NIF is an autonomous body of the Department of Science and Technology under the Central Government.
2. NIF is an initiative to strengthen the highly advanced scientific research in India’s premier scientific institution in collaboration with highly advanced foreign scientific institutions.
Select the correct answer using the code given below.
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

4. With reference to the use of nanotechnology in health sector, which of the following statements is/are correct?
1. Targeted drug delivery is made possible by nanotechnology.
2. Nanotechnology can largely contribute to gene therapy.
Select the correct answer using the code given below.
(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
5. In the context of modern scientific research, consider the following statements about ‘IceCube’, a particle detector located at South Pole, which was recently in the news:
1. It is the world’s largest neutrino detector, encompassing a cubic kilometer of ice.
2. It is a powerful telescope to search for dark matter.
3. It is buried deep in the ice.
Select the correct answer using the code given below.
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

6. With reference to ‘Near Field Communication (NFC) Technology, which of the following statements is/are correct?
1. It is a contactless communication technology uses electromagnetic radio fields.
2. NFC is designed for use by devices which can be at a distance of even a metre from each other.
3. NFC can use encryption when sending sensitive information.
Select the correct answer using the code given below.
(a) 1 and 2 only (b) 3 only (c) 1 and 3 only (d) 1, 2 and 3

7. Indira Gandhi Prize for Peace, Disarmament and Development for 2014 was given to which one of the following?
(a) Bhabha Atomic Research Centre
(b) Indian Institute of Science
(c) Indian Space Research Organization
(d) Tata Institute of Fundamental Research

2014
1. With reference to technologies for solar power production, consider the following statements:
1. ‘Photovoltaics’ is a technology that generates electricity by direct conversion of light into electricity, while ‘Solar Thermal’ is a technology that utilizes the Sun’s rays to generate heat which is further used in electricity generation process.
2. Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC).
3. India has manufacturing base for Solar Thermal technology, but not for Photovoltaics.
Which of the statements given above is/ are correct?
(a) 1 only (b) 2 and 3 only (c) 1, 2 and 3 (d) None

2. With reference to Agni-IV Missile, which of the following statements is/are correct?
1. It is a surface-to-surface missile.
2. It is fuelled by liquid propellant only.
3. It can deliver one-tonne nuclear warheads about 7500 km away.
Select the correct answer using the code given below:
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

3. In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person?
1. Iris scanning
2. Retinal scanning
3. Voice recognition
Select the correct answer using the code given below.
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

4. Which of the following pairs is/ are correctly matched?
Spacecraft Purpose
1.Cassini-Huygens : Orbiting the Venus and transmitting data to the Earth
2.Messenger : Mapping and investigating the Mercury
3.Voyager 1 and 2 : Exploring the outer solar system
Select the correct answer using the code given below.
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

5. Consider the following techniques / phenomena:
1. Budding and grafting in fruit plants
2. Cytoplasmic male sterility
3. Gene silencing
Which of the above is /are used to create transgenic crops?
(a) 1 only (b) 2 and 3 c) 1 and 3 (d) None

6. There is some concern regarding the nano particles of some chemical elements that are used by the industry in the manufacture of various products. Why?
1. They can accumulate in the environment, and contaminate water and soil.
2. They can enter the food chains.
3. They can trigger the production of free radicals.
Select the correct answer using the code given below.
(a) 1 and 2 only (b) 3 only (c) 1 and 3 only (d) 1, 2 and 3

2013
1. Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to
1. resist drought and increase absorptive area
2. tolerate extremes of pH.
3. resist disease infestation
Select the correct answer using the codes given below.
(a) 1 only (b) 2 and 3 (c) 1 and 3 (d) 1, 2 and 3

2. Recombinant DNA technology (Genetic Engineering) allows genes to be transferred
1. across different species of plants
2. from animals to plants
3. from microorganisms to higher organisms
Select the correct answer using the codes given below:
(a) 1 only (b) 2 and 3 (c) 1 and 3 (d) 1, 2 and 3

2012
1. With reference to ‘stem cells’ frequently in the news, which of the following statements is/are correct?
1. Stem cells can be derived from mammals only.
2. Stem cells can be used for screening new drugs.
3. Stem cells can be used for medical therapies.
Select the correct answer using the codes given below:
(a) 1 and 2 (b) 2 and 3 (c) 3 only (d) 1, 2 and 3

2. To meet its rapidly growing energy demand, some opine that India should pursue research and development on thorium as the future fuel of nuclear energy. In this context, what advantage does thorium hold over Uranium?
1. Thorium is far more abundant in nature than Uranium.
2. On the basis of per unit mass of mined mineral, thorium can generate more energy compared to natural Uranium.
3. Thorium produces less harmful waste compared to Uranium.
Which of the statements given above is/are correct?
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

3. What are the reasons for the people’s resistance to the introduction of Bt brinjal in India?
1. Bt Brinjal has been created by inserting a gene from a soil fungus into its genome.
2. The seeds of Bt Brinjal are terminator seeds and therefore, the farmers have to buy the seeds before every season from the seed companies.
3. There is an apprehension that the consumption of Bt brinjal may have adverse impact on health.
4. There is some concern that the introduction of Bt. brinjal may have adverse effect on the biodiversity.
Select the correct answer using the codes given below:
(a) 1, 2 and 3 only (b) 2 and 3 only (c) 3 and 4 only (d) 1, 2, 3 and 4

4. Other than resistance to pests, what are the prospects for which genetically engineered plants have been created? 1. To enable them to withstand drought
2. To increase the nutritive value of the produce
3. To enable them to grow and do photosynthesis in spaceships and space stations
4. To increase their shelf life
Select the correct answer using the codes given below:
(a) 1 and 2 only (b) 3 and 4 only (c) 1, 2 and 4 only (d) 1, 2, 3 and 4

2011
1. Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:
1. The orbit is geosynchronous
2. The orbit is circular
3. The orbit lies in the plane of the Earth’s equator
4. The orbit is at an altitude of 22,236 km.
Select the correct answer using the codes given below:
(a) 1, 2 and 3 only (b) 1, 3 and 4 only (c) 2 and 4 only (d) 1, 2, 3 and 4

2. At present, scientists can determine the arrangement or relative positions of genus of DNA sequences on a chromosome. How does this knowledge benefit us?
1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease-resistant animal breeds.
Which of the statements given above is/are correct?
(a) 1 and 2 only (b) 2 only (c) 1 and 3 only (d) 1, 2 and 3

3. Microbial fuel cells are considered a source of sustainable energy. Why?
1. They use living organisms as catalysts to generate electricity from certain substrates.
2. They use a variety of inorganic materials as substrates.
3. They can be installed in waste water treatment plants to cleanse water and produce electricity.
Which of the statements given above is/are correct?
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

4. A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed. The objective of this is
(a) to make it pest resistant
(b) to improve its taste and nutritive qualities
(c) to make is drought-resistant
(d) to make is shelf-life longer

5. The function of heavy water in a nuclear reactor is to
(a) Slow down the speed of neutrons
(b) Increase the speed of neutrons
(c) Cool down the reactor
(d) Stop the nuclear reaction

6. A company marketing food products advertises that its do not contain trans-fats. What does this campaign signify to the customers?
1. The food products are not made out of hydrogenated oils
2. The food products are not made out of animal fats/oils
3. The oils used are not likely to damage the cardiovascular health of the consumers
Which of the statements given above is/are correct?
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

7. What is the difference between Blue-tooth and Wi-Fi devices?
(a) Bluetooth uses 2-4GHz radio frequency hand, whereas Wi-Fi can use 2-4GHz or 5GHz frequency band
(b) Bluetooth is used for Wireless Local Area Networks (WLAN) only, whereas Wi-Fi is used for Wireless Wide Area Networks (WWAN) only
(c) When information is transmitted between two devices using Blue-tooth technology, the devices have to be in the line of sight of each other, but when Wi-Fi technology is used the devices need not be in the line of sight of each other
(d) The statements (a) and (b) given above are correct in this context

8. Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low-calorie sweetening agent in food items. What is the basis of this use?
(a) Aspartame is a sweet as table sugar, but unlike table sugar, is not readily oxidized in human body due to lack of requisite enzymes
(b) When aspartame is used in food processing, the sweet taste remains, but it becomes resistant to oxidation
(c) Aspartame is as sweet as sugar, but after ingestion into the body, it is converted into metabolites that yield no calories
(d) Aspartame is several times sweeter than table sugar, hence food items made with small quantities of aspartame yield fewer calories on oxidation

9. What is the difference between a CFL and an LED lamp?
1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material.
2. The average life span of a CFL is much longer than that of an LED lamp.
3. A CFL is less energy-efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

10. A new optical disc format known as the Blu-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD? 1. DVD supports Standard Definition video while BD supports High Definition video.
2. Compared to a DVD, the BD format has several times more storage capacity
3. Thickness of BD is 2.4mm while that of DVD is 1.2mm.
Which of the statements given above is/are correct?
(a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3

11. An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of earth
(a) Does not exist at such distance
(b) Is neutralized by the attraction of the moon
(c) Provides the necessary speed for its steady motion
(d) Provides the necessary acceleration for its motion

12. What is “Virtual Private Network”?
(a) It is a private computer network of an organisation where the remote users can transmit encrypted information through the server of the organisation
(b) It is a computer network across a public internet that provides users access to their organisation’s network while maintaining the security of the information transmitted
(c) It is a computer network in which users can access a shared pool of computing resources through a service provider
(d) None of the statements (a), (b) and (c) given above is a correct description of Virtual Private Network

13. Recently “oilzapper” was in the news. What is it?
(a) It is an eco-friendly technology for the remediation of oily sludge and oil spills
(b) It is the latest technology developed for under sea oil exploration
(c) It is a genetically engineered high bio-fuel yielding maize variety
(d) It is the latest technology to control the accidentally caused flames from oil wells 

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