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Defence Technology

29 questions in Science & Technology.

Asked in 2026, 2025, 2024, 2023, 2022, 2020, 2018, 2016, 2014, 2009, 2008, 2007

2026 · Q45Science & TechnologyDefence Technologydifficult

The Bureau of Indian Standard (BIS) recently introduced a national standard to test and assess bomb disposal system. Which of the following statements with regard to this system is/are correct ? 1. The new standard is known as IS 19445 : 2025. 2. It will improve interoperability of equipment across agencies. 3. It was developed by TBRL, DRDO in collaboration with the 30th Central Scientific Research Institute, Russia. Select the answer using the code given below :

  1. (a)1, 2 and 3
  2. (b)2 and 3 only
  3. (c)1 and 2 only
  4. (d)1 only
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Official answer(c) 1 and 2 only

2026 · Q68Science & TechnologyDefence Technologymoderate

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 :

  1. (a)1 only
  2. (b)2 and 3 only
  3. (c)1 and 2 only
  4. (d)1, 2 and 3
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Official answer(c) 1 and 2 only

2026 · Q72Science & TechnologyDefence Technologymoderate

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 :

  1. (a)1 only
  2. (b)2 and 3 only
  3. (c)1 and 2 only
  4. (d)1, 2 and 3
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Official answer(b) 2 and 3 only

2024 · Q69Science & TechnologyDefence Technologymoderate

Which of the following is/are correctly matched in terms of equivalent rank in the three services of Indian Defence forces ? Army : Airforce : Navy 1. Brigadier : Air Commodore : Commander 2. Major General : Air Vice Marshal : Vice Admiral 3. Major : Squadron Leader : Lieutenant Commander 4. Lieutenant Colonel : Group Captain : Captain Select the correct answer using the code given below :

  1. (a)1 and 4
  2. (b)1 and 3
  3. (c)2, 3 and 4
  4. (d)3 only
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Official answer(d) 3 only

2023 · Q54Science & TechnologyDefence Technologymoderate

Consider the following actions : 1. Detection of car crash/collision which results in the deployment of airbags almost instantaneously 2. Detection of accidental free fall of a laptop towards the ground which results in the immediate turning off of the hard drive 3. Detection of the tilt of the smart-phone which results in the rotation of display between portrait and landscape mode In how many of the above actions is the function of accelerometer required?

  1. (a)Only one
  2. (b)Only two
  3. (c)All three
  4. (d)None
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Official answer(c) All three

2023 · Q58Science & TechnologyDefence Technologyeasy

Consider the following statements : 1. Ballistic missiles are jet-propelled at subsonic speeds throughout their flights, while cruise missiles are rocket-powered only in the initial phase of flight. 2. Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fuelled intercontinental ballistic missile. Which of the statements given above is/are correct?

  1. (a)1 only
  2. (b)2 only
  3. (c)Both 1 and 2
  4. (d)Neither 1 nor 2
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Official answer(d) Neither 1 nor 2

2022 · Q34Science & TechnologyDefence Technologymoderate

Which one of the following statements best reflects the idea behind the “Fractional Orbital Bombardment System” often talked about in media ?

  1. (a)A hypersonic missile is launched into space to counter the asteroid approaching the Earth and explode it in space.
  2. (b)A spacecraft lands on another planet after making several orbital motions.
  3. (c)A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.
  4. (d)A spacecraft moves along a comet with the same speed and places a probe on its surface.
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Official answer(c) A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.

2022 · Q77Science & TechnologyDefence Technologyeasy

Which one of the following statements best describes the 'Polar Code' ?

  1. (a)It is the international code of safety for ships operating in polar waters.
  2. (b)It is the agreement of the countries around the North Pole regarding the demarcation of their territories in the polar region.
  3. (c)It is a set of norms to be followed by the countries whose scientists undertake research studies in the North Pole and South Pole.
  4. (d)It is a trade and security agreement of the member countries of the Arctic Council.
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Official answer(a) It is the international code of safety for ships operating in polar waters.