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4 questions

2026 · Question 43 · Defence Technology
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 :
Choose your answer(a)1 only(b)2 and 3 only(c)1 and 2 only(d)1, 2 and 3
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2026 · Question 47 · Defence Technology
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 :
Choose your answer(a)1 only(b)2 and 3 only(c)1 and 2 only(d)1, 2 and 3
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2026 · Question 68 · Defence Technology
Which of the following items of defence hardware is/are manufactured in India ? 1. Su-30 MKI Fighter Jets 2. T-90 MK-III Tanks 3. Akula Class Submarine Select the answer using the code given below :
Choose your answer(a)1 and 2(b)1 and 3(c)1 only(d)2 only
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)
2026 · Question 80 · Defence Technology
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 :
Choose your answer(a)1, 2 and 3(b)2 and 3 only(c)1 and 2 only(d)1 only
Source: UPSC, Civil Services (Preliminary), General Studies Paper I (opens in a new tab)

Which of the following items of defence hardware is/are manufactured in India ? 1. Su-30 MKI Fighter Jets 2. T-90 MK-III Tanks 3. Akula Class Submarine Select the answer using the code given below :