Miscellaneous Science & Nobel Prizes

Nanotechnology

Nanotechnology Basics


Define nanotechnology and state its primary scale.	- Nanotechnology: Science, engineering, and technology conducted at the nanoscale, which is 1 to 100 nanometers ($1\text{ nm} = 10^{-9}\text{ m}$).
What key properties change when materials are structured at the nanoscale?	Key Properties: - Significantly increased surface-area-to-volume ratio (leads to higher chemical reactivity). - Quantum confinement effects become dominant. - Altered optical, electrical, magnetic, and mechanical properties compared to bulk material.
Identify natural sources of nanoparticles.	Naturally Occurring Nanoparticles: - Volcanic ash - Ocean spray - Forest fire smoke - Biological entities (e.g., viruses)

Applications of Nanotechnology


Outline the main applications of nanotechnology across medicine, electronics, energy, agriculture, environment, and textiles.	Applications: - Medicine: Targeted drug delivery, cancer therapeutics (destroying tumor cells), and diagnostic imaging. - Electronics: Transistors at sub-10nm nodes, quantum dot displays (QLED). - Energy: High-efficiency solar cells, advanced batteries, and hydrogen fuel cells. - Agriculture: Nano-fertilizers (e.g., Nano Urea), smart pesticide delivery systems. - Environment: Water purification membranes, oil spill remediation, and pollutant degradation. - Textiles: Stain-resistant, water-repellent, and antimicrobial fabrics.

Outline the main applications of nanotechnology across medicine, electronics, energy, agriculture, environment, and textiles.

Applications: - Medicine: Targeted drug delivery, cancer therapeutics (destroying tumor cells), and diagnostic imaging. - Electronics: Transistors at sub-10nm nodes, quantum dot displays (QLED). - Energy: High-efficiency solar cells, advanced batteries, and hydrogen fuel cells. - Agriculture: Nano-fertilizers (e.g., Nano Urea), smart pesticide delivery systems. - Environment: Water purification membranes, oil spill remediation, and pollutant degradation. - Textiles: Stain-resistant, water-repellent, and antimicrobial fabrics.

Carbon Nanostructures


Compare Fullerenes, Carbon Nanotubes (CNTs), and Graphene.	Carbon Allotropes at Nanoscale: - Fullerene (C60): A football-shaped carbon molecule. Used in targeted drug delivery and advanced organic electronics. - Carbon Nanotubes (CNTs): Cylindrical carbon molecules with high tensile strength (~100 times stronger than steel). Used in structural composites and electronics. - Graphene: A single, two-dimensional layer of carbon atoms arranged in a hexagonal lattice. Used in high-speed electronics and filtration membranes.

Compare Fullerenes, Carbon Nanotubes (CNTs), and Graphene.

Carbon Allotropes at Nanoscale: - Fullerene (C60): A football-shaped carbon molecule. Used in targeted drug delivery and advanced organic electronics. - Carbon Nanotubes (CNTs): Cylindrical carbon molecules with high tensile strength (~100 times stronger than steel). Used in structural composites and electronics. - Graphene: A single, two-dimensional layer of carbon atoms arranged in a hexagonal lattice. Used in high-speed electronics and filtration membranes.

Advanced Materials

Superconductivity


Define superconductivity and identify its major applications.	Superconductivity: A state of zero electrical resistance and expulsion of magnetic fields (Meissner effect) occurring in certain materials when cooled below a characteristic critical temperature. Applications: - MRI (Magnetic Resonance Imaging) machines - Maglev (Magnetic Levitation) trains - Particle accelerators - Lossless power transmission lines
What are High-Temperature Superconductors (HTS)?	- High-Temperature Superconductors: Materials that exhibit superconductivity at temperatures relatively higher than traditional superconductors (often above the boiling point of liquid nitrogen, 77 K), making cooling less expensive but still required.

Molecular Machines


Who were the awardees of the 2016 Nobel Prize in Chemistry, and what was their achievement?	- Laureates: Jean-Pierre Sauvage, J. Fraser Stoddart, and Bernard L. Feringa. Achievement: The design and synthesis of Molecular Machines (nanoscale machines with controllable movements when energy is added).
List examples and applications of molecular machines.	- Examples: Molecular motors, nano-sized elevators, and molecular switches. Applications: Targeted drug delivery systems, molecular computing components, and adaptive smart materials.

Water Technologies

Osmosis & Reverse Osmosis


Compare Osmosis and Reverse Osmosis (RO) in terms of flow direction, driving forces, and application.	- Osmosis: Natural movement of solvent (water) from a region of low solute concentration to high solute concentration across a semi-permeable membrane. Used in plant water uptake. Reverse Osmosis (RO): Forced movement of solvent in the opposite direction (high solute concentration to low solute concentration) by applying external pressure exceeding the osmotic pressure. Used in water desalination and purification.
What is the role of the RO membrane?	- RO Membrane: A semi-permeable membrane that allows water molecules to pass through while blocking dissolved salts, heavy metals, and large molecules.

Compare Osmosis and Reverse Osmosis (RO) in terms of flow direction, driving forces, and application.

- Osmosis: Natural movement of solvent (water) from a region of low solute concentration to high solute concentration across a semi-permeable membrane. Used in plant water uptake.
Reverse Osmosis (RO): Forced movement of solvent in the opposite direction (high solute concentration to low solute concentration) by applying external pressure exceeding the osmotic pressure. Used in water desalination and purification.

What is the role of the RO membrane?

- RO Membrane: A semi-permeable membrane that allows water molecules to pass through while blocking dissolved salts, heavy metals, and large molecules.

Water Purification Methods


Compare key water purification methods in terms of what they remove and their typical scale of use.	Purification Comparison: - Reverse Osmosis (RO): Removes dissolved salts, microplastics, and heavy metals. Used at both home and industrial scales. - UV Treatment: Uses ultraviolet light to destroy the DNA of bacteria and viruses (disinfection). Typically used at home scale; does not remove dissolved chemical impurities. - Chlorination: Chemical disinfection that kills pathogens. Used primarily at the municipal water treatment scale. - Activated Carbon: Adsorbs organic compounds, chlorine, and odor-causing molecules. Used in home filters. - Distillation: Involves boiling water and condensing the steam to remove all impurities (physical and dissolved chemical). Used at laboratory and industrial scales.

Compare key water purification methods in terms of what they remove and their typical scale of use.

Purification Comparison: - Reverse Osmosis (RO): Removes dissolved salts, microplastics, and heavy metals. Used at both home and industrial scales. - UV Treatment: Uses ultraviolet light to destroy the DNA of bacteria and viruses (disinfection). Typically used at home scale; does not remove dissolved chemical impurities. - Chlorination: Chemical disinfection that kills pathogens. Used primarily at the municipal water treatment scale. - Activated Carbon: Adsorbs organic compounds, chlorine, and odor-causing molecules. Used in home filters. - Distillation: Involves boiling water and condensing the steam to remove all impurities (physical and dissolved chemical). Used at laboratory and industrial scales.

Pollution Control

Air Pollution Control


Identify the target pollutants for Electrostatic Precipitators, Scrubbers, Catalytic Converters, and Bag Filters.	Pollution Control Equipment: - Electrostatic Precipitator (ESP): Removes particulate matter (PM) from industrial exhaust using electrical charge. - Scrubbers: Remove sulfur dioxide ($SO_2$) and acid gases by spraying liquid reagents (wet scrubbers). - Catalytic Converters: Reduce carbon monoxide (CO), nitrogen oxides ($NO_x$), and unburnt hydrocarbons in vehicle exhausts. - Bag Filters (Fabric Filters): Capture fine dust particles physically using fabric bags.

Identify the target pollutants for Electrostatic Precipitators, Scrubbers, Catalytic Converters, and Bag Filters.

Pollution Control Equipment: - Electrostatic Precipitator (ESP): Removes particulate matter (PM) from industrial exhaust using electrical charge. - Scrubbers: Remove sulfur dioxide ($SO_2$) and acid gases by spraying liquid reagents (wet scrubbers). - Catalytic Converters: Reduce carbon monoxide (CO), nitrogen oxides ($NO_x$), and unburnt hydrocarbons in vehicle exhausts. - Bag Filters (Fabric Filters): Capture fine dust particles physically using fabric bags.

Smog Tower


What is a Smog Tower, how does it work, and what is the associated controversy?	- Smog Tower: A large-scale air purifier designed to reduce particulate matter (PM2.5 and PM10) in localized urban environments. Mechanism: Air is drawn in by powerful fans, forced through multi-layer particulate filters, and clean air is discharged into the surroundings. Indian Example: Smog towers installed in Delhi (2021). Controversy: Scientists and environmentalists question their cost-effectiveness and efficiency in open, unconfined urban spaces.

What is a Smog Tower, how does it work, and what is the associated controversy?

- Smog Tower: A large-scale air purifier designed to reduce particulate matter (PM2.5 and PM10) in localized urban environments.
Mechanism: Air is drawn in by powerful fans, forced through multi-layer particulate filters, and clean air is discharged into the surroundings.
Indian Example: Smog towers installed in Delhi (2021).
Controversy: Scientists and environmentalists question their cost-effectiveness and efficiency in open, unconfined urban spaces.

Intellectual Property Rights (IPR)

Types of IPR


Define and state the protection durations for Patents, Copyrights, Trademarks, GIs, Trade Secrets, and Industrial Designs in India.	Intellectual Property Rights: - Patent: Protects novel inventions (products or processes). Duration: 20 years. - Copyright: Protects original literary, dramatic, musical, and artistic works. Duration: Lifetime of the author + 60 years. - Trademark: Protects signs, brand names, and logos used to distinguish goods/services. Duration: 10 years (renewable indefinitely). - Geographical Indication (GI): Identifies goods originating from a specific region that possess qualities or a reputation due to that place. Duration: 10 years (renewable; effectively indefinite for the community). - Trade Secret: Protects confidential business information (e.g., formulas, processes). Duration: Indefinite (as long as secrecy is maintained). - Industrial Design: Protects the aesthetic and visual design of articles. Duration: 10 years (extendable up to 15 years total).

Define and state the protection durations for Patents, Copyrights, Trademarks, GIs, Trade Secrets, and Industrial Designs in India.

Intellectual Property Rights: - Patent: Protects novel inventions (products or processes). Duration: 20 years. - Copyright: Protects original literary, dramatic, musical, and artistic works. Duration: Lifetime of the author + 60 years. - Trademark: Protects signs, brand names, and logos used to distinguish goods/services. Duration: 10 years (renewable indefinitely). - Geographical Indication (GI): Identifies goods originating from a specific region that possess qualities or a reputation due to that place. Duration: 10 years (renewable; effectively indefinite for the community). - Trade Secret: Protects confidential business information (e.g., formulas, processes). Duration: Indefinite (as long as secrecy is maintained). - Industrial Design: Protects the aesthetic and visual design of articles. Duration: 10 years (extendable up to 15 years total).

Patent System in India


Detail the legal framework, regulatory office, and TRIPS compliance of India's patent system.	Indian Patent Framework: - Governing Law: The Patents Act, 1970 (amended in 2005 to introduce product patents). - Regulatory Office: Office of the Controller General of Patents, Designs & Trade Marks (CGPDTM). - TRIPS Compliance: India became fully compliant with the WTO's TRIPS Agreement in 2005.
What is Compulsory Licensing? Give an Indian example.	- Compulsory Licensing: An authorization granted by the government to a third party to manufacture and sell a patented product (usually pharmaceuticals) without the consent of the patent owner, typically in national emergencies or public health crises. Example: India issued its first compulsory license to Natco Pharma for the generic production of Bayer's cancer drug Nexavar.

Biopiracy & TK


Define biopiracy and give famous historical examples involving India.	Biopiracy: The unauthorized commercial exploitation of biological resources or traditional knowledge indigenous to a country, without providing fair compensation or obtaining prior informed consent. Key Examples: - Turmeric Patent: US patent on wound-healing properties of turmeric (successfully revoked by India). - Neem Patent: European patent on fungicidal properties of neem (revoked). - Basmati Rice: Patent dispute over "Texmati" (rice hybrid resembling Basmati) claimed by a US firm.
What measures has India and the international community taken to prevent biopiracy?	Protection Mechanisms: - TKDL (Traditional Knowledge Digital Library): India's digital database documenting traditional medicinal knowledge to prevent erroneous patent grants. - Nagoya Protocol: An international agreement under the Convention on Biological Diversity (CBD) regulating Access and Benefit-Sharing (ABS) of genetic resources.

Define biopiracy and give famous historical examples involving India.

Biopiracy: The unauthorized commercial exploitation of biological resources or traditional knowledge indigenous to a country, without providing fair compensation or obtaining prior informed consent.
Key Examples: - Turmeric Patent: US patent on wound-healing properties of turmeric (successfully revoked by India). - Neem Patent: European patent on fungicidal properties of neem (revoked). - Basmati Rice: Patent dispute over "Texmati" (rice hybrid resembling Basmati) claimed by a US firm.

What measures has India and the international community taken to prevent biopiracy?

Protection Mechanisms: - TKDL (Traditional Knowledge Digital Library): India's digital database documenting traditional medicinal knowledge to prevent erroneous patent grants. - Nagoya Protocol: An international agreement under the Convention on Biological Diversity (CBD) regulating Access and Benefit-Sharing (ABS) of genetic resources.

Indian Scientists & Contributions

Major Indian Scientists


List the key contributions of C.V. Raman, S.N. Bose, Homi Bhabha, and Vikram Sarabhai.	Pioneering Indian Scientists: - C.V. Raman: Awarded the Nobel Prize in Physics (1930) for the discovery of the Raman Effect (scattering of light). - S.N. Bose: Developed Bose-Einstein statistics; bosons (subatomic particles) are named after him. - Homi J. Bhabha: Father of the Indian Nuclear Programme; formulated India's three-stage nuclear power strategy. - Vikram Sarabhai: Father of the Indian Space Programme; instrumental in establishing ISRO.
List the contributions of A.P.J. Abdul Kalam, Venkatraman Ramakrishnan, Har Gobind Khorana, and S. Chandrasekhar.	Pioneering Indian Scientists (Contd.): - A.P.J. Abdul Kalam: "Missile Man of India"; led the Integrated Guided Missile Development Programme (IGMDP). - Venkatraman Ramakrishnan: Nobel Prize in Chemistry (2009) for mapping the structure of the ribosome. - Har Gobind Khorana: Nobel Prize in Medicine (1968) for deciphering the genetic code and synthesis of proteins. - Subrahmanyan Chandrasekhar: Nobel Prize in Physics (1983) for astrophysical research on the structure of stars (the Chandrasekhar Limit).
List the contributions of Meghnad Saha, J.C. Bose, and Srinivasa Ramanujan.	Pioneering Indian Scientists (Contd.): - Meghnad Saha: Formulated the Saha Ionization Equation, fundamental to stellar astrophysics. - Jagadish Chandra Bose: Pioneered investigation of radio and microwave optics; demonstrated plant response to stimuli (crescograph). - Srinivasa Ramanujan: Mathematical genius who made extraordinary contributions to number theory, infinite series, and continued fractions.

Indian Research Organizations


State the mandate for CSIR, DRDO, ISRO, ICAR, and ICMR.	Indian Research Mandates: - CSIR (Council of Scientific & Industrial Research): Promotes industrial and applied R&D across a wide array of fields. - DRDO (Defence Research and Development Organisation): Formulates and develops advanced military technology and defense systems. - ISRO (Indian Space Research Organisation): Coordinates India's space program and satellite systems. - ICAR (Indian Council of Agricultural Research): Coordinates agricultural research and education in India. - ICMR (Indian Council of Medical Research): The apex body in India for the formulation, coordination, and promotion of biomedical research.
State the roles of DST, DBT, and DAE.	Scientific Departments: - DST (Department of Science & Technology): Promotes new areas of science and technology, acting as a major funding body. - DBT (Department of Biotechnology): Coordinates and funds biotechnology R&D, infrastructure, and biosafety regulations. - DAE (Department of Atomic Energy): Directs atomic energy development, power production, and nuclear research.

State the mandate for CSIR, DRDO, ISRO, ICAR, and ICMR.

Indian Research Mandates: - CSIR (Council of Scientific & Industrial Research): Promotes industrial and applied R&D across a wide array of fields. - DRDO (Defence Research and Development Organisation): Formulates and develops advanced military technology and defense systems. - ISRO (Indian Space Research Organisation): Coordinates India's space program and satellite systems. - ICAR (Indian Council of Agricultural Research): Coordinates agricultural research and education in India. - ICMR (Indian Council of Medical Research): The apex body in India for the formulation, coordination, and promotion of biomedical research.

State the roles of DST, DBT, and DAE.

Scientific Departments: - DST (Department of Science & Technology): Promotes new areas of science and technology, acting as a major funding body. - DBT (Department of Biotechnology): Coordinates and funds biotechnology R&D, infrastructure, and biosafety regulations. - DAE (Department of Atomic Energy): Directs atomic energy development, power production, and nuclear research.

Nobel Prizes (Recent)

Nobel Prize in Physics


Detail the 2024 and 2023 Nobel Prizes in Physics (Laureates and achievements).	Recent Physics Laureates: - 2024: John J. Hopfield and Geoffrey E. Hinton for foundational discoveries and inventions that enable machine learning with artificial neural networks. - 2023: Pierre Agostini, Ferenc Krausz, and Anne L'Huillier for experimental methods that generate attosecond pulses of light for the study of electron dynamics in matter.
Detail the 2022 and 2021 Nobel Prizes in Physics.	Recent Physics Laureates (Contd.): - 2022: Alain Aspect, John F. Clauser, and Anton Zeilinger for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science. - 2021: Syukuro Manabe, Klaus Hasselmann, and Giorgio Parisi for groundbreaking contributions to our understanding of complex physical systems, including climate models.
Detail the 2020 and 2017 Nobel Prizes in Physics.	Recent Physics Laureates (Contd.): - 2020: Roger Penrose (black hole formation is a robust prediction of general relativity) and Reinhard Genzel & Andrea Ghez (discovery of a supermassive compact object at the center of our galaxy). - 2017: Rainer Weiss, Barry C. Barish, and Kip S. Thorne for decisive contributions to the LIGO detector and the observation of gravitational waves.

Nobel Prize in Chemistry


Detail the 2024 and 2023 Nobel Prizes in Chemistry.	Recent Chemistry Laureates: - 2024: David Baker (computational protein design) and Demis Hassabis & John M. Jumper (protein structure prediction using AlphaFold). - 2023: Moungi G. Bawendi, Louis E. Brus, and Alexei I. Ekimov for the discovery and synthesis of quantum dots.
Detail the 2022 and 2020 Nobel Prizes in Chemistry.	Recent Chemistry Laureates (Contd.): - 2022: Carolyn R. Bertozzi, Morten Meldal, and K. Barry Sharpless for the development of click chemistry and bioorthogonal chemistry. - 2020: Emmanuelle Charpentier and Jennifer A. Doudna for the development of a method for genome editing (CRISPR-Cas9 genetic scissors).
Detail the 2016 Nobel Prize in Chemistry.	Recent Chemistry Laureates (Contd.): - 2016: Jean-Pierre Sauvage, J. Fraser Stoddart, and Bernard L. Feringa for the design and synthesis of molecular machines.

Nobel Prize in Medicine


Detail the 2024 and 2023 Nobel Prizes in Physiology or Medicine.	Recent Medicine Laureates: - 2024: Victor Ambros and Gary Ruvkun for the discovery of microRNA and its role in post-transcriptional gene regulation. - 2023: Katalin Karikó and Drew Weissman for their discoveries concerning nucleoside base modifications that enabled the development of effective mRNA vaccines against COVID-19.
Detail the 2022, 2021, and 2020 Nobel Prizes in Physiology or Medicine.	Recent Medicine Laureates (Contd.): - 2022: Svante Pääbo for his discoveries concerning the genomes of extinct hominins and human evolution (sequencing Neanderthal genome). - 2021: David Julius and Ardem Patapoutian for their discoveries of receptors for temperature and touch. - 2020: Harvey J. Alter, Michael Houghton, and Charles M. Rice for the discovery of the Hepatitis C virus.

Detail the 2024 and 2023 Nobel Prizes in Physiology or Medicine.

Recent Medicine Laureates: - 2024: Victor Ambros and Gary Ruvkun for the discovery of microRNA and its role in post-transcriptional gene regulation. - 2023: Katalin Karikó and Drew Weissman for their discoveries concerning nucleoside base modifications that enabled the development of effective mRNA vaccines against COVID-19.

Detail the 2022, 2021, and 2020 Nobel Prizes in Physiology or Medicine.

Recent Medicine Laureates (Contd.): - 2022: Svante Pääbo for his discoveries concerning the genomes of extinct hominins and human evolution (sequencing Neanderthal genome). - 2021: David Julius and Ardem Patapoutian for their discoveries of receptors for temperature and touch. - 2020: Harvey J. Alter, Michael Houghton, and Charles M. Rice for the discovery of the Hepatitis C virus.

Subject in Trends

Recent Science Topics


Briefly explain MEMS/NEMS, Quantum Supremacy, and Lab-Grown Diamonds.	Key Emerging Technologies: - MEMS/NEMS: Micro/Nano Electro-Mechanical Systems; tiny integrated devices combining electrical and mechanical components. - Quantum Supremacy: The point where a quantum computer performs a calculation that is practically impossible for classical supercomputers (achieved by Google's 53-qubit Sycamore processor in 2019). - Lab-Grown Diamonds: Synthetic diamonds produced using methods like Chemical Vapor Deposition (CVD) or High Pressure High Temperature (HPHT), mimicking natural diamond crystalline structures.
Briefly explain Carbon Capture, Metamaterials, Neuromorphic Computing, and 6G.	Key Emerging Technologies (Contd.): - Carbon Capture: Direct Air Capture (DAC) and industrial capture systems that extract $CO_2$ directly from the atmosphere or emissions points for sequestration or utilization. - Metamaterials: Artificially engineered materials with electromagnetic or optical properties not found in nature (e.g., negative refractive index for cloaking devices). - Neuromorphic Computing: Computing architectures inspired by the physical structure and operation of the human brain's neural networks. - 6G Technology: Next-generation wireless communications expected around 2030+, utilizing Terahertz (THz) frequency bands to achieve ultra-low latency and Tbps speeds.

Briefly explain MEMS/NEMS, Quantum Supremacy, and Lab-Grown Diamonds.

Key Emerging Technologies: - MEMS/NEMS: Micro/Nano Electro-Mechanical Systems; tiny integrated devices combining electrical and mechanical components. - Quantum Supremacy: The point where a quantum computer performs a calculation that is practically impossible for classical supercomputers (achieved by Google's 53-qubit Sycamore processor in 2019). - Lab-Grown Diamonds: Synthetic diamonds produced using methods like Chemical Vapor Deposition (CVD) or High Pressure High Temperature (HPHT), mimicking natural diamond crystalline structures.

Briefly explain Carbon Capture, Metamaterials, Neuromorphic Computing, and 6G.

Key Emerging Technologies (Contd.): - Carbon Capture: Direct Air Capture (DAC) and industrial capture systems that extract $CO_2$ directly from the atmosphere or emissions points for sequestration or utilization. - Metamaterials: Artificially engineered materials with electromagnetic or optical properties not found in nature (e.g., negative refractive index for cloaking devices). - Neuromorphic Computing: Computing architectures inspired by the physical structure and operation of the human brain's neural networks. - 6G Technology: Next-generation wireless communications expected around 2030+, utilizing Terahertz (THz) frequency bands to achieve ultra-low latency and Tbps speeds.

🎯 UPSC Prelims 2026 Questions & Explanations


Kingdom. b. Richard Robson – Incorrect. He was not among the recipi...	- Question 47: Kingdom. b. Richard Robson – Incorrect. He was not among the recipients of the 2025 Nobel Prize in Physics. c. John Clarke – He was born in the United Kingdom, worked as a professor at an American university, and was a recipient of the 2025 Nobel Prize in Physics. d. Joel Mokyr – Incorrect. He was not a recipient of the 2025 Nobel Prize. Which of the following statements with regard to the Grand Slam Tennis Tournaments is/are correct? 1. The tournaments have a shared governance structure establishing the partnership among the four Grand Slam Tournaments. 2. They are open for entry to all internationally ranked tennis players above the age of 14. 3. There is a limitation on the number of 'Wild Cards' a player may receive to compete in a Grand Slam Tournament. Select the answer using the code given below: (a) 1 and 2 only (b) 2 and 3 only Correct Answer: () Key Concepts & Explanation: 2025-nobel- prize- winners/articles how/124396081 .cms $ ^{C} $ $ ^{} $ (As per the provisional answer key of the UPSC, the answer is 'A', but the USPS differs from the given Vision/AS differs from the given answer based on the fact mentioned in Rules Book (which can be found in the next cell)). Tennis Grand Slams refer to the four most prestigious annual tournaments in the sport: the Australian Open, French Open (Roland Garros), Wimbledon, and the US Open. They offer the highest prize money, the most ranking points, and are the pinnacle of professional tennis competition. The four Grand Slam tournaments – the Australian Open, French Open, Wimbledon, and US Open – coordinate through a shared governance mechanism known as the Grand Slam Board, which works in partnership with the International Tennis Federation (ITF). Hence statement is correct. As per the Grand Slam Rule Book, 'The four Grand Slam Tournaments are open for entry to all internationally Year Asked:* Prelims 2026

Kingdom. b. Richard Robson – Incorrect. He was not among the recipi...

- Question 47: Kingdom.
b. Richard Robson – Incorrect. He was not among the recipients of the 2025 Nobel Prize in Physics.
c. John Clarke – He was born in the United Kingdom, worked as a professor at an American university, and was a recipient of the 2025 Nobel Prize in Physics.
d. Joel Mokyr – Incorrect. He was not a recipient of the 2025 Nobel Prize.
Which of the following statements with regard to the Grand Slam Tennis Tournaments is/are correct?
1. The tournaments have a shared governance structure establishing the partnership among the four Grand Slam Tournaments.
2. They are open for entry to all internationally ranked tennis players above the age of 14.
3. There is a limitation on the number of 'Wild Cards' a player may receive to compete in a Grand Slam Tournament.
Select the answer using the code given below: (a) 1 and 2 only (b) 2 and 3 only

Correct Answer: ()

Key Concepts & Explanation:
2025-nobel-
prize-
winners/articles
how/124396081
.cms
$ ^{C} $
$ ^{*} $
(As per the provisional answer key of the UPSC, the answer is 'A', but the USPS differs from the given Vision/AS differs from the given answer based on the fact mentioned in Rules Book (which can be found in the next cell)).
Tennis Grand Slams refer to the four most prestigious annual tournaments in the sport: the Australian Open, French Open (Roland Garros), Wimbledon, and the US Open. They offer the highest prize money, the most ranking points, and are the pinnacle of professional tennis competition.
The four Grand Slam tournaments – the Australian Open, French Open, Wimbledon, and US Open – coordinate through a shared governance mechanism known as the Grand Slam Board, which works in partnership with the International Tennis Federation (ITF). Hence statement is correct.
As per the Grand Slam Rule Book, 'The four Grand Slam Tournaments are open for entry to all internationally

Year Asked: Prelims 2026

High-Yield S&T Rapid Revision: Indian Scientific Pioneers

Jayant Narlikar: Proponent of the Steady State cosmological model challenging the Big Bang theory (IUCAA).
P.C. Mahalanobis: Founder of the Indian Statistical Institute, developer of the Mahalanobis Distance, and architect of India's Second Five-Year Plan (ISI).
V. Rajaraman: Authored early computer science textbooks and pioneered computer application education in India (IISc).
M.R. Srinivasan: Key architect of the domestic Three-Stage Nuclear Power Program and the pressurized heavy water reactor fleet (DAE).
Srinivasa Ramanujan: Developed partition functions and mock theta functions that provide foundational mathematics for string theory and black hole entropy (National Academy of Sciences).

Miscellaneous Science & Nobel Prizes ​

🎯 UPSC Prelims 2026 Questions & Explanations ​

Miscellaneous Science & Nobel Prizes

🎯 UPSC Prelims 2026 Questions & Explanations