Science and 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.

The Bureau of Indian Standard (BIS) recently introduced a national standard to test and assess bomb disposal system. Which of the following 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.

Which one of the following pairs is NOT correctly matched?
(Indian Army Corps) : (Headquarters)

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

Consider the following statements about Mission Sudarshan Chakra of India:
1. It aims to enhance India’s air defence, ballistic missile defence and aerial offensive capabilities.
2. Designed to enhance rapid, precise, and powerful defence responses, reinforcing India’s strategic autonomy.
3. One of the aims is to cover all public places of India by an expanded nationwide security shield by 2035.

With reference to India’s defence, consider the following pairs:
Aircraft type : Description
I. Dornier-228 : Maritime patrol aircraft
II. IL-76 : Supersonic combat aircraft
III. C-17 Globemaster III : Military transport aircraft
How many of the pairs given above are correctly matched?

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?

With reference to Unmanned Aerial Vehicles (UAVs), consider the following statements:
I. All types of UAVs can do vertical landing.
II. All types of UAVs can do automated hovering.
III. All types of UAVs can use battery only as a source of power supply.

Which of the statements given above are correct?

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:

Consider the following aircraft:
1. Rafael
2. MiG-29
3. Tejas MK-1
How many of the above are considered fifth generation fighter aircraft?