UPSC Prelims 2025 · GS Paper I
Science questions from UPSC 2025
Review every Science question in the 2025 paper with its answer and study explanation, then launch the same set under timed exam conditions.
Topic distribution
All 2025 Science questions
Open any question for the full options, answer, explanation, and syllabus metadata.
Question 1 · Battery Technology
In the context of electric vehicle batteries, consider the following elements : I. Cobalt II. Graphite III. Lithium IV. Nickel How many of the above usually make up battery cathodes?
Question 2 · Information Technology
With reference to 'Web 3.0', consider the following statements: 1. Web 3.0 technology enables people to control their own data. 2. In Web 3.0 world, there can be blockchain based social netw...
Question 3 · Green Technology
Consider the following types of vehicles : I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell-electric hybrid vehicles How many of the above are considered as a...
Question 4 · Biotechnology
With reference to 'CRISPR-Cas9' technology, consider the following statements: 1. It can be used to alter the genes of a living organism. 2. It can be used to treat genetic diseases like sic...
Question 5 · Space Technology
GPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground stations to provide necessary augmentation. Which of the following statements is/are correct in respect of GAGAN? I. It is...
Question 6 · Microbiology
Consider the following statements : I. No virus can survive in ocean waters. II. No virus can infect bacteria. III. No virus can change the cellular transcriptional activity in host cells. H...
Question 7 · Emerging Technologies
Consider the following statements : I. It is expected that Majorana 1 chip will enable quantum computing. II. Majorana 1 chip has been introduced by Amazon Web Services (AWS). III. Deep lear...
Question 8 · Space Technology
Consider the following space missions : I. Axiom-4 II. SpaDeX III. Gaganyaan How many of the space missions given above encourage and support micro-gravity research?
Question 9 · Chemical Compounds
Consider the following substances : I. Ethanol II. Nitroglycerine III. Urea Coal gasification technology can be used in the production of how many of them?
Question 10 · Space Technology
Consider the following statements regarding the NISAR (NASA-ISRO Synthetic Aperture Radar) mission: 1. It is a dual-frequency radar imaging satellite designed to observe Earth's land and ice...
Question 11 · Unmanned Aerial Vehicles (UAVs)
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...