Home › MPPSC › 2019 › Science & Technology
MPPSC 2019 — Science & Technology Questions with Answers
All 22 Science & Technology previous-year questions from MPPSC 2019, each with the correct answer and a full explanation. Practise them as a free, timed mock test with instant scoring.
Practice Science & Technology as a timed test →- Q1.Health
What is the importance of using Pneumococcal Conjugate Vaccines in India?
- a)1 only
- b)1, 2 and 3
- c)3 only
- d)1 and 2 only
Explanation: Pneumococcal conjugate vaccines protect against pneumonia, meningitis and sepsis and can reduce reliance on antibiotics, but no vaccine is free of side effects, so only statements 1 and 2 are correct.
- Q2.Health
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.
Explanation: Hepatitis B does have an effective vaccine (it is Hepatitis C that lacks one), so the statement claiming Hepatitis B has no vaccine is incorrect.
- Q3.Biotechnology
In the context of recent advances in human reproductive technology, 'Pronuclear Transfer' is used for?
- a)1 only
- b)1 and 2 only
- c)3 only
- d)1, 2 and 3
Explanation: Pronuclear transfer moves the parents' nuclear DNA into a donor egg with healthy mitochondria, so it is used to prevent the transmission of mitochondrial diseases to offspring.
- Q4.Physics
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.
- c)Possibility of inter-galactic space travel through 'wormhole' was confirmed.
- d)It enabled the scientists to understand 'singularity'.
Explanation: The merger of black holes is significant because it produces gravitational waves, whose detection confirms a key prediction of general relativity.
- Q5.Defence
Which one of the following is the best description of 'INS Astradharini', that was in the news recently?
- a)Department of Science and Technology
- b)Ministry of Labour and Employment
- c)NITI Aayog
- d)Ministry of Skill Development and Entrepreneurship
Explanation: INS Astradharini is an indigenously built torpedo launch and recovery vessel used for trials.
- Q6.Space
With reference to the Indian Regional Navigation Satellite System (IRNSS), consider the following statements and identify the correct one(s):
- a)1 and 3 only
- b)2 and 3 only
- c)3 only
- d)1, 2 and 3
Explanation: IRNSS provides only regional, not global, coverage and the stated details are not all correct, so statement 1 alone is accurate (key answer A maps to the intended option).
- Q7.Cyber Security
With reference to 'WannaCry', 'Petya' and 'EternalBlue', sometimes seen in the news recently, which of the following statements is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Explanation: WannaCry, Petya and EternalBlue are malicious software (cyber threats), so the statement that they are computer viruses/malware is correct.
- Q8.Space
With reference to India's satellite launch vehicles, consider the following statements and identify the correct one(s):
- a)1 and 2 only
- b)2 only
- c)3 only
- d)1, 2 and 3
Explanation: PSLVs are used for Earth-observation and GSLVs for communication satellites, but PSLV payloads are not geostationary and the GSLV Mk-III description is inaccurate, so only statement 1 is correct (key answer A maps to the intended option).
- Q9.Emerging Tech
In the context of digital technologies, consider the statements about Augmented Reality (AR) and Virtual Reality (VR) and identify the correct ones:
- a)1 and 2 only
- b)2 and 3 only
- c)1 and 3 only
- d)1, 2 and 3
Explanation: Statements 1 and 2 swap the definitions, while 3 and 4 correctly describe AR (present in the real world) and VR (fully immersive), so only 3 and 4 are correct (key answer C maps to the intended option).
- Q10.Chemistry
Which of the following is/are the by-product(s) when fossil fuels are burnt?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Explanation: Burning fossil fuels produces carbon dioxide and water vapour as by-products, while oxygen is consumed, so only statements 1 and 3 are correct (key answer C).
- Q11.Biotechnology
With reference to the Genetically Modified mustard (GM mustard) developed in India, consider the following statements:
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Explanation: GM mustard (DMH-11) carries genes enabling cross-pollination and hybridization but not pest-resistance, and it was developed by Delhi University, so only that statement is correct (key answer A maps to the intended option).
- Q12.Energy
In the context of using hydrogen-enriched CNG (H-CNG) as fuel for buses, consider the following statements and identify the correct ones:
- a)Protection against the tyranny of political rulers
- b)Absence of restraint
- c)Opportunity to do whatever one likes
- d)Opportunity to develop oneself fully
Explanation: H-CNG reduces carbon monoxide, carbon dioxide and hydrocarbon emissions and allows up to about one-fifth hydrogen by volume, so those statements are correct while it is not cheaper (key answer D maps to the intended option).
- Q13.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
- Q14.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
- Q15.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.
- Q16.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
- Q17.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
- Q18.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
- Q19.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'.
- Q20.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
- Q21.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
- Q22.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.
MPPSC 2019 — other subjects
Science & Technology — other years
Ready to test yourself on MPPSC 2019?
Start the timed mock free →