2026 Prelims Paper 1 UPSC Question Paper

UPSC Prelims Paper 1 Question Papers

2026 Prelims Paper 1 UPSC Questions

41.
Which of the following statements with regard to genetic medicine is/are correct ?
1. Genetic medicines correct/compensate for the faulty genes responsible for disease.
2. Engineered viruses and lipid nanoparticles are used as carriers of the genetic medicine.
3. Genetic medicines alter the entire DNA sequence.
Select the answer using the code given below :
A.
1 only
B.
2 and 3 only
C.
1 and 2 only
D.
1, 2 and 3
😑 View Answer Rough Work
ANSWER :
C. 1 and 2 only
42.
Which of the following statements with regard to Large Language Models (LLMs) used in machine learning is/are correct ?
1. LLMs assign probabilities to the next possible words and then pick the one with the highest probability.
2. LLMs process data through mathematical optimization to minimise prediction errors.
3. LLMs produce unbiased outputs.
Select the answer using the code given below :
A.
1 only
B.
1 and 2 only
C.
2 and 3 only
D.
1, 2 and 3
😑 View Answer Rough Work
ANSWER :
B. 1 and 2 only
43.
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 :
A.
1 only
B.
2 and 3 only
C.
1 and 2 only
D.
1, 2 and 3
😑 View Answer Rough Work
ANSWER :
C. 1 and 2 only
44.
Which of the following statements with regard to Black Boxes used in modern aircrafts is/are correct ?
1. They carry a beacon emitting red light pulses to facilitate underwater detection.
2. They record both the cockpit voice and flight data.
3. Their memory units are made using either stainless steel or titanium.
Select the answer using the code given below :
A.
1 only
B.
2 and 3 only
C.
1 and 2 only
D.
1, 2 and 3
😑 View Answer Rough Work
ANSWER :
B. 2 and 3 only
45.
Which of the following statements with regard to Green Hydrogen is/are correct ?
1. It is decarbonized hydrogen obtained from natural gas reforming combined with carbon capture and storage (CCS).
2. It is produced using electrolysis of water with electricity generated by renewable energy.
3. National Green Hydrogen Mission of India aims for abatement of nearly 50 MMT of annual greenhouse gas emissions by 2030.
Select the answer using the code given below :
A.
1 only
B.
2 and 3 only
C.
2 only
D.
1, 2 and 3
😑 View Answer Rough Work
ANSWER :
C. 2 only
46.
Consider the following statements with regard to involvement of private entities in India's space programme :
1. The Indian National Space Promotion and Authorisation Centre (IN-SPACe) is an autonomous agency formed to facilitate participation of private entities.
2. Agnikul Cosmos launched the world's first flight using 3D-printed rocket engine.
3. Skyroot Aerospace has developed liquid fuel for GSLV.
Which of the statements given above is/are correct ?
A.
1 only
B.
2 and 3 only
C.
1 and 2 only
D.
1, 2 and 3
😑 View Answer Rough Work
ANSWER :
C. 1 and 2 only
47.
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 :
A.
1 only
B.
2 and 3 only
C.
1 and 2 only
D.
1, 2 and 3
😑 View Answer Rough Work
ANSWER :
A. 1 only
48.
Which of the following statements with regard to GenomeIndia Project is/are correct ?
1. It is a part of the Human Genome Project.
2. The project is funded by the Department of Biotechnology (DBT).
3. Its main aim is to build a catalogue of the genetic diversity of the Indian population.
Select the answer using the code given below :
A.
1 only
B.
2 and 3 only
C.
1 and 2 only
D.
1, 2 and 3
😑 View Answer Rough Work
ANSWER :
B. 2 and 3 only
49.
Which of the following statements with regard to the National Quantum Mission (NQM) is/are correct ?
1. It aims at developing intermediate-scale quantum computers with 50-1000 physical qubits.
2. Its implementation includes setting up of four Thematic Hubs (T-Hubs) in academic and national R&D institutes across India.
Select the answer using the code given below :
A.
1 only
B.
2 only
C.
Both 1 and 2
D.
Neither 1 nor 2
😑 View Answer Rough Work
ANSWER :
C. Both 1 and 2
50.
Which of the following statements with regard to India's Deep Ocean Mission is/are correct ?
1. It was launched by the Ministry of Ports, Shipping and Waterways, Government of India.
2. Matsya-6000 has been designed to carry 3 people for deep sea exploration.
3. Samudrayaan is a project under this mission.
Select the answer using the code given below :
A.
1 only
B.
2 and 3 only
C.
1 and 2 only
D.
1, 2 and 3
😑 View Answer Rough Work
ANSWER :
B. 2 and 3 only