Computers, ICT and Emerging Tech — UPSC Prelims practice questions

Q: How many Computers, ICT and Emerging Tech MCQs are available for UPSC Prelims practice?

PrelimsAI currently has 80+ Computers, ICT and Emerging Tech MCQs under Science. This page shows 12 sample questions in full.

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34+ questions in this chapter are tagged as UPSC Prelims PYQs. PYQs are prioritised in the visible sample set when available.

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Question 1

Consider the following statements:
Statement-I: Some rare earth elements are used in the manufacture of flat television screens and computer monitors.
Statement-II: Some rare earth elements have phosphorescent properties.
Which one of the following is correct in respect of the above statements? (A) Both Statement-I and Statement-II are correct and Statement-II explains Statement-I (B) Both Statement-I and Statement-II are correct but Statement-II does not explain Statement-I (C) Statement-I is correct but Statement-II is not correct (D) Statement-I is not correct but Statement-II is correct

Accepted Answer

(A) Both Statement-I and Statement-II are correct and Statement-II explains Statement-I — Correct. Rare earth elements like europium and terbium are used in display phosphors. Their phosphorescent properties are the reason they are employed in screens and monitors.

Question 2

In the context of electric vehicle batteries, consider the following elements:
1. Cobalt
2. Graphite
3. Lithium
4. Nickel
How many of the above usually make up battery cathodes? (A) Only one (B) Only two (C) Only three (D) All the four

Accepted Answer

(C) Only three — Correct. Cobalt, lithium and nickel are standard cathode components in Li-ion batteries. Graphite is used as the anode material, not the cathode.

Question 3

Consider the following statements:
1. Indian Railways have prepared a National Rail Plan (NRP) to create a future ready railway system by 2028.
2. 'Kavach' is an Automatic Train Protection system developed in collaboration with Germany.
3. 'Kavach' system consists of RFID tags fitted on track in station section.
Which of the statements given above are not correct? (A) 1 and 2 only (B) 2 and 3 only (C) 1 and 3 only (D) 1, 2 and 3

Accepted Answer

(A) 1 and 2 only — Correct. The NRP target year is 2030, not 2028, and Kavach was developed indigenously by RDSO (Research Designs and Standards Organisation), not with Germany.

Question 4

Which one of the following words/phrases is most appropriately used to denote "an interoperable network of 3D virtual worlds that can be accessed simultaneously by millions of users, who can exert property rights over virtual items"? (A) Big data analytics (B) Cryptography (C) Metaverse (D) Virtual matrix

Accepted Answer

(C) Metaverse — Correct. The Metaverse describes an interoperable network of persistent 3D virtual worlds where users can interact, own virtual property, and conduct transactions.

Question 5

Consider the following activities:
1. Identification of narcotics on passengers at airports or in aircraft
2. Monitoring of precipitation
3. Tracking the migration of animals
In how many of the above activities can radars be used? (A) Only one (B) Only two (C) All three (D) None

Accepted Answer

(C) All three — Correct. Millimetre-wave scanners (a radar type) detect concealed substances at airports, weather radars monitor precipitation, and Doppler radars track animal migration patterns.

Question 6

With reference to "Software as a Service (SaaS)", consider the following statements:
1. SaaS buyers can customise the user interface and can change data fields.
2. SaaS users can access their data through their mobile devices.
3. Outlook, Hotmail and Yahoo! Mail are forms of SaaS.
Which of the statements given above are correct? (A) 1 and 2 only (B) 2 and 3 only (C) 1 and 3 only (D) 1, 2 and 3

Accepted Answer

(D) 1, 2 and 3 — Correct. SaaS allows interface customisation, is accessible via mobile devices, and web-based email services are standard SaaS examples.

Question 7

Consider the following:
1. Aarogya Setu
2. CoWIN
3. DigiLocker
4. DIKSHA
Which of the above are built on top of open-source digital platforms? (A) 1 and 2 only (B) 2, 3 and 4 only (C) 1, 3 and 4 only (D) 1, 2, 3 and 4

Accepted Answer

(D) 1, 2, 3 and 4 — Correct. All four platforms — Aarogya Setu, CoWIN, DigiLocker and DIKSHA — are built on open-source digital platforms as part of India's digital public infrastructure strategy.

Question 8

With reference to Web 3.0, consider the following statements:
1. Web 3.0 technology enables people to control their own data.
2. In the Web 3.0 world, there can be blockchain-based social networks.
3. Web 3.0 is operated by users collectively rather than a corporation.
Which of the statements given above are correct? (A) 1 and 2 only (B) 2 and 3 only (C) 1 and 3 only (D) 1, 2 and 3

Accepted Answer

(D) 1, 2 and 3 — Correct. Web 3.0 emphasises user data ownership, supports blockchain-based social networks, and relies on decentralised community governance rather than corporate control.

Question 9

Consider the following communication technologies:
1. Closed-circuit Television
2. Radio Frequency Identification
3. Wireless Local Area Network
Which of the above are considered Short-Range devices/technologies? (A) 1 and 2 only (B) 2 and 3 only (C) 1 and 3 only (D) 1, 2 and 3

Accepted Answer

(D) 1, 2 and 3 — Correct. CCTV, RFID and WLAN are all classified as short-range devices/technologies, operating within limited distances from a few centimetres to approximately 100 metres.

Question 10

With reference to Non-Fungible Tokens (NFTs), consider the following statements:
1. They enable the digital representation of physical assets.
2. They are unique cryptographic tokens that exist on a blockchain.
3. They can be traded or exchanged at equivalency and therefore can be used as a medium of commercial transactions.
Which of the statements given above are correct? (A) 1 and 2 only (B) 2 and 3 only (C) 1 and 3 only (D) 1, 2 and 3

Accepted Answer

(A) 1 and 2 only — Correct. NFTs can represent physical assets digitally and are unique blockchain tokens. However, being non-fungible means they cannot be traded at equivalency like currency.

Question 11

With reference to "Blockchain Technology", consider the following statements:
1. It is a public ledger that everyone can inspect, but which no single user controls.
2. The structure and design of blockchain is such that all the data in it are about cryptocurrency only.
3. Applications that depend on basic features of blockchain can be developed without anybody's permission.
Which of the statements given above is/are correct? (A) 1 only (B) 1 and 2 only (C) 2 only (D) 1 and 3 only

Accepted Answer

(D) 1 and 3 only — Correct. Blockchain is a transparent, decentralised public ledger (statement 1) and allows permissionless application development (statement 3). It is not limited to cryptocurrency data.

Question 12

In India, under cyber insurance for individuals, which of the following benefits are generally covered, in addition to payment for the loss of funds and other benefits?
1. Cost of restoration of the computer system in case of malware disrupting access to one's computer
2. Cost of a new computer if some miscreant wilfully damages it, if proved so
3. Cost of hiring a specialised consultant to minimise the loss in case of cyber extortion
4. Cost of defence in the Court of Law if any third party files a suit
Select the correct answer using the code given below: (A) 1, 2 and 4 only (B) 1, 3 and 4 only (C) 2 and 3 only (D) 1, 2, 3 and 4

Accepted Answer

(B) 1, 3 and 4 only — Correct. Cyber insurance covers system restoration costs, consultant fees for cyber extortion, and legal defence costs. Physical damage to hardware is not a cyber insurance benefit.

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