Science & Technology Current Affairs MCQs

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Russian President Vladimir Putin recently announced the start of production of the Oreshnik hypersonic missile. Russia plans to deploy the Oreshnik missile in Belarus by the end of 2025. Oreshnik is a Russian intermediate-range hypersonic ballistic missile named after the Russian word for “hazel tree.” It made its operational debut on November 21, 2024, in a precision strike on the Pivdenmash defence facility in Dnipro, Ukraine. The missile is mobile and uses solid fuel, enhancing its rapid deployment capability. It can reach speeds up to Mach 10, which is ten times the speed of sound.

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The World Health Organization (WHO) and International Agency for Research on Cancer (IARC) have classified Hepatitis D virus (HDV) as carcinogenic to humans, alongside Hepatitis B (HBV) and Hepatitis C (HCV). HBV, HCV, and HDV infect over 300 million people globally, causing 1.3 million deaths annually from liver cirrhosis and cancer. HDV affects about 5% of chronic HBV patients, mainly in Asia, Africa, Amazon Basin, and high-risk groups like drug users and haemodialysis patients. Co-infection with HBV raises liver cancer risk 2–6 times; 75% may develop cirrhosis within 15 years. No separate HDV vaccine exists; prevention relies on universal HBV vaccination and testing.

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Recently, reports claim the Trump administration asked NASA to shut down Orbiting Carbon Observatories (OCO). The Orbiting Carbon Observatory (OCO) Program, managed by NASA’s Jet Propulsion Laboratory (JPL), is an initiative of NASA. OCO are Earth remote sensing satellites designed to monitor atmospheric carbon dioxide (CO₂) from space to understand climate change.

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Recently, concern was raised that despite the huge human and economic toll of Chagas disease, investment in research and development of diagnostics, medicines, and vaccines remains disproportionately low. Chagas disease, or American trypanosomiasis, is caused by the protozoan parasite Trypanosoma cruzi. It spreads mainly through blood-sucking triatomine bugs, also called reduviid or “kissing bugs,” which often bite the face. Infection occurs when parasite-containing feces of the bug enter the body. It can also spread from mother to child, contaminated food or drinks, blood transfusions, organ transplants, or lab accidents. The disease is common in South America, Central America, and Mexico.

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Two Indian aquanauts recently conducted deep-sea dives in the Atlantic Ocean under Samudrayaan Project. They collected over 100 kg of cobalt-rich polymetallic nodules from 1,173 meters depth in the Andaman Sea. Deep Ocean Mission was launched by Ministry of Earth Sciences (MoES) on 7 September 2021 with ₹4,077 crore for 5 years. The mission develops technologies for exploring and using deep ocean resources sustainably. It supports India’s Blue Economy with potential to push maritime economy beyond ₹100 billion. It aligns with United Nations Decade of Ocean Science (2021–2030).

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OpenAI has launched the Learning Accelerator program in India to empower the education ecosystem with Artificial Intelligence (AI). India is one of the largest ChatGPT markets, with millions of students using AI for assignments, research, and learning. The initiative will distribute 5 lakh ChatGPT licences to students and educators across schools, universities, and research institutes. Government schools (Classes 1–12) will receive ChatGPT access through the Ministry of Education for lesson planning and personalized student engagement. Technical institutes under All India Council for Technical Education (AICTE) will get AI tools for skill-building.

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For decades, aspirin was the main drug to prevent heart attacks and strokes. A new study presented at the European Society of Cardiology congress and published in The Lancet shows clopidogrel, a blood-thinning antiplatelet drug, may be more effective. Review of seven clinical trials with 29,000 coronary artery disease patients found clopidogrel 14% more effective than aspirin in lowering major cardiovascular risks. Importantly, there was no higher risk of serious bleeding compared to aspirin. Clopidogrel (a P2Y₁₂ inhibitor) works by blocking platelet receptors to stop dangerous blood clots. It is low-cost, widely available, and safe, making it a strong candidate to replace aspirin in treatment guidelines.

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Russia has launched EnteroMix, a new mRNA-based cancer vaccine, reported to show 100 percent efficacy in early trials. It was developed by the National Medical Research Radiology Centre (NMRRC) and Engelhardt Institute of Molecular Biology under the Russian Academy of Sciences. The launch took place at the St Petersburg International Economic Forum (SPIEF 2025) and shared globally via Sputnik news service. The vaccine targets colorectal cancer first, with versions in development for glioblastoma and melanoma. EnteroMix uses four harmless viruses to attack cancer cells and boost immune defence. Russian Federal Medical and Biological Agency (FMBA) confirmed its safety for repeated use and personalised RNA-based tailoring.

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Cholesterol, a fat-like substance, can control the spin of electrons, a quantum property crucial for next-generation spintronic devices. Spintronics uses electron spin to develop energy-efficient electronics and bioelectronic devices. Scientists from the Institute of Nano Science and Technology (INST), Mohali, under the Department of Science and Technology (DST), developed cholesterol-based nanomaterials for spintronic and quantum applications. Cholesterol’s intrinsic handedness (chirality) and flexibility allow precise control over molecular properties. This innovation could enable energy-efficient memory chips and greener quantum technologies.

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A new analysis of NASA’s Cassini spacecraft data shows that Saturn’s moon Enceladus may support life. Cassini was a joint mission of NASA, European Space Agency (ESA), and Italian Space Agency (ASI). It was launched on October 15, 1997, to study Saturn and its moons in detail. The mission had NASA’s Cassini orbiter and ESA’s Huygens probe, which landed on Titan, Saturn’s largest moon. Cassini studied Saturn’s atmosphere, rings, and magnetosphere, along with Titan’s surface and atmosphere. It provided key insights into Saturn’s cloud properties, ring composition, and planetary evolution.