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RPSC 2019 — Science & Technology Questions with Answers

All 10 Science & Technology previous-year questions from RPSC 2019, each with the correct answer and a full explanation. Practise them as a free, timed mock test with instant scoring.

1. Q1.Digital 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?

   • a)1 and 2 only
   • b)3 and 4
   • c)1, 2 and 3
   • d)4 only
2. Q2.Biology

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

   • a)fossils of a kind of dinosaurs
   • b)an early human species
   • c)a cave system found in North-East India
   • d)a geological period in the history of Indian subcontinent
3. Q3.Biotechnology

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

   • a)Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
   • b)Pieces of artificial functional DNA can be created in laboratories.
   • c)A piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory.
   • d)Cells taken out from plants and animals can be made to undergo cell division in laboratory petri dishes.
4. Q4.Digital Technologies

   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?

   • a)1 only
   • b)2 and 3 only
   • c)3 only
   • d)1, 2 and 3
5. Q5.Digital 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.

   • a)1 only
   • b)2 and 3 only
   • c)3 only
   • d)1, 2 and 3
6. Q6.Biotechnology

   '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.

   • a)1, 2 and 4
   • b)2 and 3
   • c)1 and 3
   • d)1 and 4 only
7. Q7.Physics and Astronomy

   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 particles' boson were detected.
   • b)'Gravitational waves' were detected.
   • c)Possibility of inter-galactic space travel through 'wormhole' was confirmed.
   • d)It enabled the scientists to understand 'singularity'.
8. Q8.Biology

   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.

   • a)1 and 2
   • b)2 and 3 only
   • c)1, 3 and 4
   • d)2, 3 and 4
9. Q9.Biotechnology

   What is Cas9 protein that is often mentioned in news?

   • a)A molecular scissors used in targeted gene editing
   • b)A biosensor used in the accurate detection of pathogens in patients
   • c)A gene that makes plants pest-resistant
   • d)A herbicidal substance synthesized in genetically modified crops
10. Q10.Biology

    Which one of the following statements is not correct?

    • a)Hepatitis B virus is transmitted much like HIV.
    • b)Hepatitis B, unlike Hepatitis C, does not have a vaccine.
    • c)Globally, the number of people infected with Hepatitis B and C viruses are several times more than those infected with HIV.
    • d)Some of those infected with Hepatitis B and C viruses do not show the symptoms for many years.