UPSC solved previous year questions

UPSC Defence technology PYQ with Answers

7 solved Defence technology questions from previous UPSC papers, each with an answer and explanation.

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Questions
7
Years covered
2018–2026
Exam years
3
With answers
7

Defence technology questions by year

2026 🔒5 2021 🔒1 2018 🔒1

UPSC Defence technology PYQ with Answers

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  1. Q1 2026 Prelims GS

    Which of the following statements with regard to stealth technology is/are correct?

    1. Stealth objects have a very small radar cross-section and are coated with Radar Absorbing Material.
    2. Stealth objects can be detected using specific frequencies.
    3. Stealth objects are coated with metamaterials to increase the scattering of electromagnetic radiation.

    Select the answer using the code given below:

    Defence technologyRadar systemsScience and technology
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  2. Q2 2026 Prelims GS

    Which of the following statements with regard to drone swarms is/are correct?

    1. They use Terahertz band of frequency to communicate with the command centre.
    2. Individual drones in the swarm can communicate with other drones in the swarm.
    3. GPS Spoofing is a commonly used technique to counter drone swarm attack.

    Select the answer using the code given below:

    Defence technologyDrone technologyElectronic warfare
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