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Prelims Refresher Program 2020

Hot Topics 2020

Day 29

  • 18 Aug 2020
  • 13 min read

Welcome to the Prelims Refresher Programme 2020 - Article Page. On this page, we will provide you with 3 things:

  • A list of topics for revision.
  • A brief discussion of the topics if needed.
  • Links to various sources for preparing these topics.
In the comments, you can ask us to clear your doubts regarding any of the topics listed on the page. We will do our best to explain and clarify your doubts. Further, we may also share links to other web based learning sources like websites or videos, or may refer to you, books, documents etc. Please be cordial to your fellow aspirants and use these doubt-clearing conversations strictly to its stated purpose.

Science and Tech: Information and Nuclear Technology

Following topics of Science and Tech. relating to Information and Nuclear Technology  have been at the forefront of the news headlines, and as UPSC always attempts to test the basics, a basic awareness is required. Questions from this topic are largely asked from static as well as current affairs portions. According to the trend observed, the facts, their contexts, basic background information can be asked by the UPSC from these topics.

Cyber Security

Digital Technologies & Related Concepts

E-Governance Initiatives

Artificial Intelligence & Robotics

Nuclear Technology

Previous Years Questions

Q. Consider the following statements: (2019)

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


Q. With reference to digital payments, consider the following statements: (2018)

  1. BHIM app allows the user to transfer money to anyone with a UPI-enabled bank account.
  2. While a chip-pin debit card has four factors of authentication, BHIM app has only two factors of authentication.

Which of the statements given above is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2


Q. The identity platform ‘Aadhaar’ provides open “Application Programming Interfaces (APIs)”. What does it imply? (2018)

  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?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2


Q. The terms ‘WannaCry, Petya and EternalBlue’ sometimes mentioned in the news recently are related to (2018)

(a) Exoplanets

(b) Cryptocurrency

(c) Cyberattacks

(d) Mini satellites


Q. In which of the following areas can GPS technology be used? (2018)

  1. Mobile phone operations
  2. Banking operations
  3. Controlling the power grids

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


Q. Which of the following is/are the aim/aims of “Digital India” Plan of the Government of India? (2018)

  1. Formation of India’s own Internet companies like China did.
  2. Establish a policy framework to encourage overseas multinational corporations that collect Big Data to build their large data centres within our national geographical boundaries.
  3. Connect many of our villages to the Internet and bring Wi-Fi to many of our schools, public places and major tourist centres.

Select the correct answer using the code given below:

(a) 1 and 2 only

(b) 3 only

(c) 2 and 3 only

(d) 1, 2 and 3


Q. Regarding ‘DigiLocker’, sometimes seen in the news, which of the following statements is/are correct? (2016)

  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


Q.‘Project Loon’, sometimes seen in the news, is related to (2016)

(a) waste management technology

(b) wireless communication technology

(c) solar power production technology

(d) water conservation technology


Q. With reference to ‘LiFi’, recently in the news, which of the following statements is/are correct? (2016)

  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


Q. With reference to ‘Near Field Communication (NFC) Technology’, which of the following statements is/are correct? (2015)

  1. It is a contactless communication technology that 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


Q. Consider the following pairs: (2018) 

    Terms sometimes seen in news     Context/Topic
1. Belle II experiment — Artificial Intelligence
2. Blockchain technology — Digital/Cryptocurrency
3. CRISPR – Cas9  — Particle Physics

Which of the pairs given above is/are correctly matched?

(a) 1 and 3 only

(b) 2 only

(c) 2 and 3 only

(d) 1, 2 and 3


Q. “3D printing” has applications in which of the following? (2018)

  1. Preparation of confectionery items
  2. Manufacture of bionic ears
  3. Automotive industry
  4. Reconstructive surgeries
  5. Data processing technologies

Select the correct answer using the code given below.

(a) 1, 3 and 4 only

(b) 2, 3 and 5 only

(c) 1 and 4 only

(d) 1, 2, 3, 4 and 5


Q. What is ‘Greased Lightning-10 (GL-10)’, recently in the news? (2016)

(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


Q. Which of the following statements is/are correct regarding National Innovation Foundation-India (NIF)? (2015)

  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 institutions 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


Q. Which among the following do/does not belong/belongs to GSM family of wireless technologies? (2010)

(a) EDGE

(b) LTE

(c) DSL

(d) Both EDGE and LTE


Q. WiMAX is related to which one of the following? (2009)

(a) Biotechnology

(b) Space technology

(c) Missile technology

(d) Communication technology


Q. What is the difference between Bluetooth and Wi-Fi devices? (2011)

(a) Bluetooth uses 2.4 GHz radio frequency band whereas Wi-Fi can use 2.4 GHz or 5 GHz 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 Bluetooth 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


Q. 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? (2011)

  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 2.4 mm while that of DVD is 1.2 mm.

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


Q. In India, it is legally mandatory for which of the following to report on cyber security incidents? (2017)

  1. Service providers
  2. Data centres
  3. Body corporate

Select the correct answer using the code given below:

(a) 1 only

(b) 1 and 2 only

(c) 3 only

(d) 1, 2 and 3


Q. The terms ‘WannaCry, Petya and EternalBlue’ sometimes mentioned in the news recently are related to (2018)

(a) Exoplanets

(b) Cryptocurrency

(c) Cyber attacks

(d) Mini satellites


Q. In which of the following areas can GPS technology be used? (2018)

  1. Mobile phone operations
  2. Banking operations
  3. Controlling the power grids

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

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