Science & Technology Current Affairs MCQs

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Ukraine’s Security Service and Navy used a Neptune missile to strike an ammunition depot in Russia’s Rostov region. The R-360 Neptune is a Ukrainian-made subsonic cruise missile, originally designed for anti-ship use and later adapted for land attacks. It is based on the Russian Kh-35 missile, known as AS-20 Kayak by NATO. The missile entered service with the Ukrainian Navy in March 2021. It weighs 870 kg, is 5.05 meters long, and has a 400 km range. It travels at 900 km/h, with altitudes from 10 to 300 meters, dropping to 3 meters in the final phase.

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Researchers at the Guangzhou Institute of Geochemistry, China, developed Electrokinetic Mining (EKM) for eco-friendly extraction of rare earth elements (REEs). EKM uses an electric field to concentrate REEs, simplifying their separation. REEs are 17 metallic elements with critical properties for modern technologies, including magnetic, electronic, and chemical applications. EKM relies on electrokinetics, which involves the movement of particles or fluids under an electric field to extract REEs from ore.

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Scientists discovered that metal lumps, called polymetallic nodules, on the dark seabed produce oxygen. Dark oxygen is created without sunlight or photosynthesis, which was previously thought to be the only way oxygen is produced. The oxygen comes from electrochemical activity in the nodules, not plants. Polymetallic nodules, made of metals like manganese, iron, cobalt, nickel, copper, and lithium, split H2O molecules into hydrogen and oxygen. This discovery challenges previous understanding and opens up new avenues for studying deep ocean processes and oxygen production at extreme depths.

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IIT-Madras researchers have extracted silicon carbide (SiC) from simulated moon soil, aiding future lunar habitat construction. Silicon carbide (SiC), also called carborundum, is a synthetic crystalline compound of silicon and carbon. It is extremely hard, has high thermal conductivity, and offers excellent resistance to wear, oxidation, and chemical reactions.

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Chinese researchers developed a new voice-based method for early Alzheimer’s detection. The study was led by Prof. Li Hai at the Hefei Institutes of Physical Science, Chinese Academy of Sciences. Alzheimer’s disease is a brain condition that causes memory loss and cognitive decline. It affects thinking, learning, and organizing skills over time. It is the most common type of dementia, making up 60-80% of cases. The disease impacts brain regions responsible for thought, memory, and language.

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NASA is set to launch SPHEREx, a revolutionary space telescope, to explore the universe’s origins. It will cost $488 million, far less than the $10 billion James Webb Space Telescope (JWST). Unlike JWST, which zooms in on deep-space objects, SPHEREx will survey the entire sky in 102 infrared colors. The telescope will take 600 images daily, completing four full sky scans in 27 months. SPHEREx will map 450 million galaxies, revealing how the universe evolved after the Big Bang. It will also study 100 million Milky Way stars, tracing life’s building blocks in space.

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China has successfully demonstrated artificial photosynthesis in space, with their astronauts on the Tiangong space station producing oxygen and rocket fuel using this technology. The astronauts used a process mimicking natural photosynthesis to convert carbon dioxide and water into oxygen and rocket fuel components using solar energy. The experiment was conducted on China’s Tiangong space station. This breakthrough is considered a major step forward in space exploration, as it could enable future missions to generate necessary resources in space.

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Satya Nadella discussed Jevons Paradox, noting AI efficiency may increase demand and make it a commodity. Jevons Paradox states that technological progress making a resource cheaper often leads to higher demand rather than reduced use. It was proposed by William Stanley Jevons in 1865. Jevons observed that technology improving coal efficiency led to more coal being used, not less. Technological progress satisfies needs that couldn’t be met before due to lack of technology.

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Pakistan’s space agency SUPARCO is collaborating with China for the Chang’e-8 lunar mission in 2028. A 35-kg indigenous Pakistani rover will explore the Moon’s south pole as part of the mission. Chang’e-8 is part of China’s International Lunar Research Station (ILRS) project and aims to test technologies for a lunar science base. The mission will conduct surveys, lunar sample analysis, and resource utilization experiments. China has allocated 200 kg of payload capacity for international participation. This follows Pakistan’s iCube Qamar CubeSat launch on China’s Chang’e-6 mission in May 2024.

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Uganda and WHO confirmed an outbreak of Sudan Virus Disease (SVD). It is a viral hemorrhagic fever, related to Ebola, caused by the Sudan virus (SUDV). It was first identified in Sudan in 1976. It exists in animal reservoirs in the region. It has a high fatality rate and spreads through direct contact with bodily fluids or contaminated surfaces. Symptoms start with fever, fatigue, and sore throat, followed by vomiting, diarrhea, rash, and bleeding. There are no approved treatments or vaccines, but early supportive care improves survival chances.