Science & Technology PYQs

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1. Prelims 2020Q44Biotechnology

   Consider the following statements :

   1.Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective parent.

   2.A person’s genome can be edited before birth at the early embryonic stage.

   3.Human induced pluripotent stem cells can be injected into the embryo of a pig.

   Which of the statements given above is/are correct ?

   a1 onlyb2 and 3 onlyc2 onlyd1, 2 and 3
2. Prelims 2020Q45Health & Diseases

   What is the importance of using Pneumococcal Conjugate Vaccines in India ?

   1.These vaccines are effective against pneumonia as well as meningitis and sepsis.

   2.Dependence on antibiotics that are not effective against drug-resistant bacteria can be reduced.

   3.These vaccines have no side effects and cause no allergic reactions.

   Select the correct answer using the code given below :

   a1 onlyb1 and 2 onlyc3 onlyd1, 2 and 3
3. Prelims 2020Q46IT & Communication

   In India, the term “Public Key Infrastructure” is used in the context of

   aDigital security infrastructurebFood security infrastructurecHealth care and education infrastructuredTelecommunication and transportation infrastructure
4. Prelims 2020Q47Biology & Human Body

   Which of the following statements are correct regarding the general difference between plant and animal cells ?

   1.Plant cells have cellulose cell walls whilst animal cells do not.

   2.Plant cells do not have plasma membrane unlike animal cells which do.

   3.Mature plant cell has one large vacuole whilst animal cell has many small vacuoles.

   Select the correct answer using the code given below :

   a1 and 2 onlyb2 and 3 onlyc1 and 3 onlyd1, 2 and 3
5. Prelims 2020Q55Defence & Nuclear Technology

   In India, why are some nuclear reactors kept under “IAEA Safeguards” while others are not ?

   aSome use uranium and others use thoriumbSome use imported uranium and others use domestic suppliescSome are operated by foreign enterprises and others are operated by domestic enterprisesdSome are State-owned and others are privately-owned
6. Prelims 2019Q32Space Technology

   For the measurement/estimation of which of the following are satellite images/remote sensing data used?

   1.Chlorophyll content in the vegetation of a specific location

   2.Greenhouse gas emissions from rice paddies of a specific location

   3.Land surface temperatures of a specific location

   Select the correct answer using the code given below.

   a1 onlyb2 and 3 onlyc3 onlyd1, 2 and 3
7. Prelims 2019Q75IT & Communication

   With reference to communication technologies, what is/are the difference/differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)?

   1.LTE is commonly marketed as 3G and VoLTE is commonly marketed as advanced 3G.

   2.LTE is data-only technology and VoLTE is voice-only technology.

   Select the correct answer using the code given below.

   a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
8. Prelims 2019Q88IT & Communication

   Which of the following adopted a law on data protection and privacy for its citizens known as 'General Data Protection Regulation' in April 2016 and started implementation of it from 25th May, 2018?

   aAustraliabCanadacThe European UniondThe United States of America
9. Prelims 2019Q91Emerging Technologies

   In the context of digital technologies for entertainment, consider the following statements :

   1.In Augmented Reality (AR), a simulated environment is created and the physical world is completely shut out.

   2.In Virtual Reality (VR), images generated from a computer are projected onto real-life objects or surroundings.

   3.AR allows individuals to be present in the world and improves the experience using the camera of smart-phone or PC.

   4.VR closes the world, and transposes an individual, providing complete immersion experience.

   Which of the statements given above is/are correct?

   a1 and 2 onlyb3 and 4c1, 2 and 3d4 only
10. Prelims 2019Q92Biology & Human Body

    The word 'Denisovan' is sometimes mentioned in media in reference to

    afossils of a kind of dinosaursban early human speciesca cave system found in North-East Indiada geological period in the history of Indian subcontinent
11. Prelims 2019Q93BiotechnologyAnswer disputed

    With reference to the recent developments in science, which one of the following statements is not correct?

    aFunctional chromosomes can be created by joining segments of DNA taken from cells of different species.bPieces of artificial functional DNA can be created in laboratories.cA piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory.dCells taken out from plants and animals can be made to undergo cell division in laboratory petri dishes.
12. Prelims 2019Q94IT & Communication

    Consider the following statements :

    A digital signature is

    1.an electronic record that identifies the certifying authority issuing it

    2.used to serve as a proof of identity of an individual to access information or server on Internet

    3.an electronic method of signing an electronic document and ensuring that the original content is unchanged

    Which of the statements given above is/are correct?

    a1 onlyb2 and 3 onlyc3 onlyd1, 2 and 3
13. Prelims 2019Q95Emerging Technologies

    In the context of wearable technology, which of the following tasks is/are accomplished by wearable devices?

    1.Location identification of a person

    2.Sleep monitoring of a person

    3.Assisting the hearing impaired person

    Select the correct answer using the code given below.

    a1 onlyb2 and 3 onlyc3 onlyd1, 2 and 3
14. Prelims 2019Q96Biotechnology

    ‘RNA interference (RNAi)’ technology has gained popularity in the last few years. Why?

    1.It is used in developing gene silencing therapies.

    2.It can be used in developing therapies for the treatment of cancer.

    3.It can be used to develop hormone replacement therapies.

    4.It can be used to produce crop plants that are resistant to viral pathogens.

    Select the correct answer using the code given below.

    a1, 2 and 4b2 and 3c1 and 3d1 and 4 only
15. Prelims 2019Q97Space Technology

    Recently, scientists observed the merger of giant ‘blackholes’ billions of light-years away from the Earth. What is the significance of this observation?

    a‘Higgs boson particles’ were detected.b‘Gravitational waves’ were detected.cPossibility of inter-galactic space travel through ‘wormhole’ was confirmed.dIt enabled the scientists to understand ‘singularity’.
16. Prelims 2019Q98Health & Diseases

    Which of the following are the reasons for the occurrence of multi-drug resistance in microbial pathogens in India?

    1.Genetic predisposition of some people

    2.Taking incorrect doses of antibiotics to cure diseases

    3.Using antibiotics in livestock farming

    4.Multiple chronic diseases in some people

    Select the correct answer using the code given below.

    a1 and 2b2 and 3 onlyc1, 3 and 4d2, 3 and 4
17. Prelims 2019Q99Biotechnology

    What is Cas9 protein that is often mentioned in news?

    aA molecular scissors used in targeted gene editingbA biosensor used in the accurate detection of pathogens in patientscA gene that makes plants pest-resistantdA herbicidal substance synthesized in genetically modified crops
18. Prelims 2019Q100Health & Diseases

    Which one of the following statements is not correct?

    aHepatitis B virus is transmitted much like HIV.bHepatitis B, unlike Hepatitis C, does not have a vaccine.cGlobally, the number of people infected with Hepatitis B and C viruses are several times more than those infected with HIV.dSome of those infected with Hepatitis B and C viruses do not show the symptoms for many years.
19. Prelims 2018Q17IT & Communication

    The identity platform 'Aadhaar' provides open "Application Programming Interfaces (APIs)".

    What does it imply ?

    1.It can be integrated into any electronic device.

    2.Online authentication using iris is possible.

    Which of the statements given above is/are correct ?

    a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
20. Prelims 2018Q33Defence & Nuclear Technology

    In the Indian context, what is the implication of ratifying the 'Additional Protocol' with the 'International Atomic Energy Agency (IAEA)' ?

    aThe civilian nuclear reactors come under IAEA safeguards.bThe military nuclear installations come under the inspection of IAEA.cThe country will have the privilege to buy uranium from the Nuclear Suppliers Group (NSG).dThe country automatically becomes a member of the NSG.