SawaalBoxसवाल बॉक्स
2025 · Q46Science & TechnologyDefence Technologymoderate

What is the common characteristic of the chemical substances generally known as CL-20, HMX and LLM-105, which are sometimes talked about in media?

  1. (a)These are alternatives to hydrofluorocarbon refrigerants
  2. (b)These are explosives in military weapons
  3. (c)These are high-energy fuels for cruise missiles
  4. (d)These are fuels for rocket propulsion
Show answerHide answer

Official answer(b) These are explosives in military weapons

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
Show answerHide answer

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
Show answerHide answer

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
Show answerHide answer

Official answer(b) 2 and 3 only