Science & Technology Current Affairs MCQs

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The recent approval by the United States to sell AIM-120C-8 Advanced Medium-Range Air-to-Air Missiles (AMRAAMs) to Turkey has raised serious concerns in India due to changing regional security dynamics. AIM-120C-8 Advanced Medium-Range Air-to-Air Missile (AMRAAM) is a state-of-the-art missile with beyond-visual-range air-to-air missile (BVRAAM) and surface-to-air missile (SAM) capabilities. It is developed by Raytheon Technologies, a top US defence company. The missile is designed to engage and destroy enemy aircraft at long distances before visual contact is made. It is a key component in modern air combat systems and significantly boosts the air power of its users.

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On May 23, 2025, Chennai-based startup Agnikul Cosmos successfully test-fired India’s first electric motor-driven semi-cryogenic engine. This marks a major step for private players in advancing Indian space technology. The engine uses electric motors instead of traditional gas generators to power fuel pumps, allowing precise thrust control and quick response. It runs on semi-cryogenic propulsion using liquid oxygen (LOX) and refined kerosene, balancing performance and cost. This innovation boosts engine reliability and suits future sub-orbital missions.

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Scientists at Raman Research Institute (RRI), Bengaluru, under the Department of Science and Technology, have found a new method to detect topological invariants in quantum materials using the spectral function. The spectral function is a quantum tool that shows how energy and particles like electrons behave inside a material. It is commonly used to study electronic structure such as density of states and dispersion relations. The team focused on momentum-space spectral function (SPSF), which acts like a quantum fingerprint showing how electrons are spread across energy and momentum. This method reveals hidden topological features using values like winding numbers in one-dimensional systems and Chern numbers in two-dimensional systems.

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The NASA-ISRO Synthetic Aperture Radar (NISAR) satellite has recently reached the Indian Space Research Organisation’s (ISRO) spaceport at Sriharikota. It is a joint mission between the National Aeronautics and Space Administration (NASA) and ISRO to study Earth’s changes. NISAR uses Synthetic Aperture Radar (SAR) technology to send energy pulses and measure how much is reflected back from Earth. This helps in capturing sharp images of the Earth even during darkness or cloudy weather. It detects changes in land, forests, and ice, and is useful for monitoring natural disasters and soil conditions.

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Researchers in Finland have developed a green chemical method using natural fatty acids from cooking oils to recover silver from electronic waste (e-waste). This comes at a time when global silver demand is rising and e-waste is becoming a major issue, especially in countries like India. E-waste includes discarded devices like computers, phones, and TVs that are outdated or broken. India is the third-largest generator of e-waste in the world, after China and the United States.

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Recently, the Union Health Ministry announced plans to integrate India’s Rare Donor Registry with the national online blood management platform called e-Rakt Kosh. e-Rakt Kosh is an online blood bank management system implemented under the National Health Mission. It is the official portal for all blood-related services in India. It provides real-time information on blood availability, blood banks, and donation camps across the country.

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Recently, Candida tropicalis, a major fungal pathogen in India and globally, was found using chromosome changes to resist common antifungal drugs like fluconazole and voriconazole. Candida tropicalis is a yeast species from the Candida genus and causes serious infections with high mortality rates. It lives in tropical and subtropical marine environments like seawater, marine plants, and fish intestines. It is also found in human guts, fruit surfaces, soil, and various foods. It mainly affects people with weak immune systems or those with neutropenia, a condition of low neutrophil white blood cells.

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Recently, Novo Nordisk launched its weight-loss injection semaglutide in India after Eli Lilly introduced tirzepatide. These are Glucagon-Like Peptide-1 (GLP-1) receptor agonists, which are drugs that copy the action of GLP-1, a gut hormone released after eating. GLP-1 helps control blood sugar, fat metabolism, and appetite in the body. These medicines usually come as injections, though oral forms are being developed. Semaglutide and tirzepatide are two leading GLP-1 Drugs. Semaglutide and tirzepatide transforming the treatment of obesity and diabetes in India.

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Recently, Japan successfully launched a climate monitoring satellite on its H-2A rocket, which made its final flight before retiring. The H-2A lifted off from Tanegashima Space Center carrying the Global Observing Satellite for Greenhouse gases and Water cycle (GOSAT-GW) to track carbon, methane, and water cycles. The launch faced delays due to electrical issues but succeeded, marking the 50th mission of H-2A since 2001 with a 98% success rate. GOSAT-GW will soon share high-resolution data globally, including with the United States National Oceanic and Atmospheric Administration (NOAA).

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Recently, an eight-week study in Brazil found that Kombucha improves gut bacteria in people with obesity by increasing good microbes and reducing harmful ones. However, it did not improve blood sugar or inflammation markers. Kombucha is a fermented tea that offers complex flavors without much sugar or caffeine. It originated in northeast China around 220 BCE and was known for its energizing and detoxifying effects. Kombucha is becoming popular in India, with the market growing from 45 million in 2020 to 102 million in 2024.