Q 2. Unmanned Aerial Vehicles (UAVs) (Science and Technology)
Q2. 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.
How many of the statements given above are correct?
1. Correct Answer: D
2. Explanation of the statements:
● Statement I is incorrect.
○ Not all types of UAVs are capable of vertical landing.
○ Vertical landing is typically a feature of certain UAVs like quadcopters or VTOL (Vertical Take-Off and Landing) drones.
○ Fixed-wing UAVs, for example, usually require a runway or a catapult system for landing.
○ Therefore, the ability to perform vertical landing is not universal across all UAV types.
● Statement II is incorrect.
○ Automated hovering is a feature primarily associated with multirotor UAVs, such as quadcopters.
○ Fixed-wing UAVs cannot hover as they rely on forward motion to generate lift.
○ Thus, not all UAVs can perform automated hovering, as it depends on the design and type of the UAV.
● Statement III is incorrect.
○ UAVs can be powered by various sources, not just batteries.
○ Some UAVs use internal combustion engines, fuel cells, or solar power as their energy source.
○ The choice of power supply depends on the UAV's design, purpose, and operational requirements.
○ Therefore, it is incorrect to say that all UAVs use only batteries as a power source.
Q 6. Explosive Compounds in Military Applications (Science and Technology)
Q6. 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. Correct Answer: B: These are explosives in military weapons.
2. Explanation of Options:
● Option A is incorrect.
○ CL-20, HMX, and LLM-105 are not used as refrigerants.
○ Hydro-fluorocarbon refrigerants are typically used in air conditioning and refrigeration systems, not explosives.
○ These substances are not related to cooling technologies.
● Option B is correct.
○ CL-20, HMX, and LLM-105 are known for their explosive properties.
○ They are high-energy materials used in military applications.
○ These substances are designed to produce a rapid release of energy, making them suitable for use in military weapons.
● Option C is incorrect.
○ High-energy fuels for cruise missiles are different from explosives.
○ While both are used in military contexts, fuels are used for propulsion, not for explosive impact.
○ CL-20, HMX, and LLM-105 are not used as fuels for cruise missiles.
● Option D is incorrect.
○ Rocket propulsion fuels are designed to provide thrust, not explosive force.
○ CL-20, HMX, and LLM-105 are not used as rocket fuels.
○ These substances are specifically formulated for explosive purposes, not for propulsion.
Q 64. Defence Technology and Internal Security
Q64. With reference to India's defence, consider the following pairs:
I. Dornier-228 → Maritime patrol aircraft
II. IL-76 → Supersonic combat aircraft
III. C-17 Globemaster → Military transport aircraft
How many of the pairs given above are correctly matched?
2. Explanation of the statements:
• Statement I: Dornier-228 → Maritime patrol aircraft
• This statement is correct.
• The Dornier-228 is a twin-turboprop utility aircraft used by the Indian Navy and Coast Guard for maritime patrol and reconnaissance missions.
• It is designed for short takeoff and landing, making it suitable for operations in remote and short airstrips.
• The aircraft is equipped with surveillance systems and can be used for search and rescue operations.
• Statement II: IL-76 → Supersonic combat aircraft
• This statement is incorrect.
• The Ilyushin IL-76 is a multi-purpose, four-engine turbofan strategic airlifter, not a supersonic combat aircraft.
• It is primarily used for military transport, including the transportation of heavy machinery, troops, and humanitarian aid.
• The IL-76 is known for its ability to operate in harsh environments and on unpaved runways.
• Statement III: C-17 Globemaster → Military transport aircraft
• This statement is correct.
• The C-17 Globemaster III is a large military transport aircraft used by the Indian Air Force for strategic airlift missions.
• It is capable of carrying large payloads over long distances and can operate in austere airfields.
• The C-17 is used for transporting troops, cargo, and humanitarian aid, and is known for its versatility and reliability.
Q . Defence Technology and Internal Security
What are the duties of the Chief of Defence Staff (CDS) as Head of the Department of Military Affairs? 1. Permanent Chairman of Chiefs of Staff Committee 2. Exercise military command over the three Service Chiefs 3. Principal Military Advisor to Defence Minister on all tri-service matters Select the correct answer using the code given below.
- Statement 1 is correct: The Chief of Defence Staff (CDS) is the Permanent Chairman of the Chiefs of Staff Committee.
- Statement 2 is incorrect: The CDS does not exercise military command over the three Service Chiefs.
- Statement 3 is correct: The CDS is the principal military advisor to the Defence Minister on all tri-service matters.
- Therefore, the duties of the Chief of Defence Staff (CDS) as Head of the Department of Military Affairs include being the Permanent Chairman of the Chiefs of Staff Committee and serving as the principal military advisor to the Defence Minister on all tri-service matters.
Q . Defence Technology and Internal Security
Operations undertaken by the Army towards upliftment of the local population in remote areas to include addressing of their basic needs is called:
- Statement a is incorrect: Operation Sankalp is an Indian Navy mission for maritime security in the Gulf region.
- Statement b is incorrect: Operation Maitri was the relief operation by India for the earthquake in Nepal.
- Statement c is correct: Operation Sadbhavana is an initiative by the Indian Army for the upliftment of the local population in remote areas.
- Statement d is incorrect: Operation Madad was a rescue operation during the Kerala floods.
- Operation Sadbhavana focuses on winning the hearts and minds of the local population in conflict-prone areas through welfare activities such as education, health care, and infrastructure development. It aims to address the basic needs of the local population and improve their quality of life.
Q . Defence Technology and Internal Security
Which of the following is/are correctly matched in terms of equivalent rank in the three services of Indian Defence forces?
|
Army |
Air Force |
Navy |
|
Brigadier |
Air Commodore |
Commander |
|
Major General |
Air Vice Marshal |
Vice Admiral |
|
Major |
Squadron Leader |
Lieutenant Commander |
|
Lieutenant Colonel |
Group Captain |
Captain |
Select the correct answer using the code given below:
- Statement 1 is incorrect: Brigadier (Army) is equivalent to Air Commodore (Airforce) but not to Commander (Navy). The correct Navy equivalent is Commodore.
- Statement 2 is incorrect: Major General (Army) is equivalent to Air Vice Marshal (Airforce) but not to Vice Admiral (Navy). The correct Navy equivalent is Rear Admiral.
- Statement 3 is correct: Major (Army) is equivalent to Squadron Leader (Airforce) and Lieutenant Commander (Navy).
- Statement 4 is incorrect: Lieutenant Colonel (Army) is equivalent to Wing Commander (Airforce) but not to Captain (Navy). The correct Navy equivalent is Commander.
Q . Defence Technology and Internal Security
Which of the following statements about Exercise Mitra Shakti-2023' are correct? 1. This was a joint military exercise between India and Bangladesh 2. It commenced in Aundh (Pune). 3. Joint response during counter-terrorism operations was a goal of this operation. 4. Indian Air Force was a part of this exercise. Select the answer using the code given below:
- Statement 1 is incorrect: Exercise Mitra Shakti-2023 was between India and Sri Lanka, not Bangladesh.
- Statement 2 is correct: the exercise did commence in Aundh, Pune.
- Statement 3 is correct: one of the goals of the exercise was joint response during counter-terrorism operations.
- Statement 4 is correct: the Indian Air Force was indeed a part of Exercise Mitra Shakti-2023.
Q . Defence Technology and Internal Security
Consider the following aircraft: 1. Rafael 2. MiG-29 3. Tejas MK-1. How many of the above are considered fifth generation fighter aircraft?
- Fifth-generation fighter aircraft are characterized by advanced stealth, supercruise capabilities, highly integrated avionics, and enhanced maneuverability.
- Option 1 is incorrect: The Rafale, developed by France, is classified as a 4.5-generation fighter jet.
- Option 2 is incorrect: The MiG-29, designed by Russia, is also a fourth-generation fighter aircraft.
- Option 3 is incorrect: The Tejas MK-1, an Indian-made fighter jet, belongs to the fourth generation (4.5-generation) category as well.
Q . Defence Technology and Internal Security
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 fueled intercontinental ballistic missile. Which of the statements given above is/are correct?
https://www.thehindu.com/news/national/india-test-fires-agni-v-ballistic-missile-having-range-of-5000-km/article66268636.ece (16 December, 2022)
PYQs: Agni 4 (2014), Agni 2 (2001), ballistic missiles (2003), ICBM (2008).
Statement 1: This statement is incorrect. The statement confuses the characteristics of Ballistic and cruise missiles.
Ballistic Missiles: These are guided only during relatively brief initial periods. Most of the flight is unpowered. Ballistic missiles are not jet-propelled; instead, they are rocket-propelled.
Cruise missiles are jet-propelled at subsonic to hypersonic speeds throughout their flights.
Statement 2: This statement is also incorrect. The statement confuses the characteristics of Agni-V and BrahMos.
- Agni 5-ICBM: Inter-continental Ballistic Missile (Long range)
- BrahMos: Short Range (290 km), Supersonic cruise missile.
Q . Defence Technology and Internal Security
Which one of the following statements best reflects the idea behind the “Fractional Orbital Bombardment System” often talked about in media?
Q . Defence Technology and Internal Security
What is "Terminal High Altitude Area Defense (THAAD)", sometimes seen in the news?
Q . Defence Technology and Internal Security
What is ‘Greased Lightning-10 (GL-10)’, recently in the news?
Q . Defence Technology and Internal Security
Which one of the following is the best description of 'INS Astradharini', that was in the news recently?
Q . Defence Technology and Internal Security
With reference to Agni-IV Missile, which of the following statements is/are correct? 1. It is surface-to surface missile. 2. It is fuelled by liquid propellant only. 3. It can deliver one-ton nuclear warheads about 7500km away. Select the correct answer using the code given below.
Q . Defence Technology and Internal Security
Consider the following statements: 1. INS Sindhughosh is an aircraft carrier. 2. INS Viraat is a submarine. Which of the statements given above is/ are correct?
Q . Defence Technology and Internal Security
In the context of Indian defence, consider the following statements: 1. The Shaurya missile flies with a speed of more than 8 Mach. 2. The range of Shaurya missile is more than 1600 km. Which of the statements given above is/are correct?
Q . Defence Technology and Internal Security
From which one of the following did India buy the Barak anti-missile defence systems?
Q . Defence Technology and Internal Security
Consider the following statements: 1. In November 2006, DRDO successfully conducted the interception test using Prithvi-II missile. 2. Prithvi-II is a surface-to-surface missile and can be deployed to guard the metros against air attacks. Which of the statements given above is/are correct?
Q . Defence Technology and Internal Security
Which of the following pairs is/are correctly matched? Inventor – Invention 1. Christopher Cockerell – Hovercraft 2. David Bushnell – Submarine 3. J.C. Perrier – Steamship Select the correct answer by using the code given below:
Q . Defence Technology and Internal Security
Which one of the following pairs is not correctly matched?
Q . Defence Technology and Internal Security
INS Trishul acquired by the Indian Navy in 2003 has been built by
Q . Defence Technology and Internal Security
With reference to Indian defence, which one of the following statements is NOT correct?
Q . Defence Technology and Internal Security
The range of Agni 2 missile is around
Q . Defence Technology and Internal Security
Which one of the following was used as a chemical weapon in the First World War?
Q . Defence Technology and Internal Security
“Mach Number” is a term associated with the speed of
Q . Defence Technology and Internal Security
Consider the following activities: 1. Spraying pesticides on a crop field 2. Inspecting the craters of active volcanoes 3. Collecting breath samples from spouting whales for DNA analysis At the present level of technology, which of the above activities can be successfully carried out by using drones?