Science & Technology Current Affairs MCQs

Notes:
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.

Notes:
CEREBO is a hand-held, portable, non-invasive brain injury diagnostic tool developed by Indian Council of Medical Research (ICMR), Medical Device & Diagnostics Mission Secretariat (MDMS), AIIMS Bhopal, NIMHANS Bengaluru, and Bioscan Research. It is designed for Traumatic Brain Injuries (TBIs) and detects intracranial bleeding and edema within a minute. The device is safe for infants and pregnant women and usable by paramedics and unskilled personnel. CEREBO provides colour-coded, radiation-free, cost-effective results where CT or MRI scans are inaccessible or delayed. It can be deployed in ambulances, trauma centres, rural clinics, and disaster response units.

Notes:
Prime Minister of India welcomed the agreement between Indian Space Research Organisation (ISRO) and Japan Aerospace Exploration Agency (JAXA) for the Chandrayaan-5 mission under the Lunar Polar Exploration (LUPEX) programme. LUPEX is jointly developed by ISRO and JAXA to explore the Moon’s southern polar region. The mission aims to investigate the presence of water and other elements, potentially as surface ice, and demonstrate innovative surface exploration technologies. It features a lander developed by ISRO and a rover developed by JAXA. The rover will autonomously search for water-rich areas, drill, sample soil, and analyze it with onboard instruments.

Notes:
India’s largest Lithium-ion (Li-ion) battery manufacturing plant was inaugurated in Haryana on 5 September 2025. When fully operational, it will produce 20 crore battery packs annually, meeting nearly 40% of India’s 50 crore pack requirement. The plant was set up under the Centre’s Electronics Manufacturing Cluster (EMC) scheme. Li-ion batteries are rechargeable, with lithium ions moving between graphite (negative electrode) and lithium metal oxides (positive electrode) through a non-aqueous electrolyte. They offer high energy density (75-200 Wh/kg), are lightweight, use fewer toxic metals, and provide good cycle stability and efficiency. They have low self-discharge and no memory effect, ensuring reliable performance.

Notes:
A study of fossil leaves from Nagaland revealed how Antarctica influenced the Indian Monsoons. Fossil leaves from the Laisong Formation in Nagaland revealed that the region once had a warm and wet climate with very high rainfall and temperatures. The fossils matched the period when massive ice sheets began forming in Antarctica, showing a global connection. Growth of Antarctic ice reshaped global wind and rainfall patterns by shifting the Intertropical Convergence Zone (ITCZ) toward the tropics. This shift brought intense monsoonal rains to Northeast India and led to the evolution of the monsoon system. The research used CLAMP (Climate Leaf Analysis Multivariate Program) method to analyze fossil leaves. CLAMP treats fossil leaves as “climate fingerprints” to reconstruct past climates.

Notes:
Union Culture Minister Gajendra Singh Shekhawat inaugurated the Gyan Bharatam International Conference in New Delhi on 11 September. Gyan Bharatam is a national initiative for preserving, digitising, and disseminating India’s manuscript heritage. The mission envisions 25 clusters, 20 regional centres, and 10 centres of excellence to safeguard manuscripts. The conference brought together 1,100+ participants, including scholars, experts, institutions, and cultural practitioners from India and abroad.

Notes:
Scientists at CSIR-Centre for Cellular and Molecular Biology (CCMB) discovered how white blood cells adapt their skeletons to fight pathogens. The study was published in Nature Structural & Molecular Biology. Cell shape depends on a dense, branched actin network near the membrane. Actin molecules push the membrane and create new meshworks for movement. A protein called SPIN90 regulates actin monomers and pairs with the Arp2/3 complex. Together, they grow new actin filaments in two directions about 150° apart. These filaments act as scaffolds to form branched actin mesh, reshaping the cell and aiding motility. This discovery explains rapid immune response and has implications for cancer, immune disorders, and wound healing.

Notes:
A viral infection called Hand, Foot, and Mouth Disease (HFMD) is spreading rapidly among children in Delhi and Haryana, prompting advisories. It is a highly contagious illness caused by a virus. It causes blister-like rashes on hands and feet, painful mouth sores, and sometimes rashes on chest, back, arms, legs, genitals, and buttocks. It mostly affects infants and children under 5 years, spreading quickly in schools and daycare. It is different from foot-and-mouth disease in animals, caused by a different virus. Transmission happens through unwashed hands, saliva, mucus, feces, or blister fluid. No cure or vaccine exists; recovery usually takes 7–10 days with basic care. Complications are rare, but children under 2 may take longer to recover.

Notes:
Mosquito-borne diseases like dengue fever are rising due to rapid urbanisation, climate change, and global travel. A new study published on 3 September in Science Translational Medicine shows waning immunity against Japanese Encephalitis Virus (JEV) can worsen dengue outcomes. Japanese Encephalitis (JE) is a viral zoonotic disease caused by the Japanese Encephalitis (B) virus. Transmission occurs through infected Culex mosquitoes of the Vishnui group, not from human to human. It is most common in rural Asia, especially during monsoon seasons. Both viruses belong to the genus Orthoflavivirus and show cross-immune interactions.

Notes:
Maulana Azad Medical College (MAMC), Delhi, launched the city’s first Central Tissue Bank for bone grafting in dental surgeries. The facility was inaugurated by Delhi Health Minister Dr Pankaj Kumar Singh. Bone grafting helps reverse jawbone loss and supports dental implants, dentures, and tissue regeneration. The tissue bank provides ready access to high-quality bone and soft tissue grafts, reducing cost and addressing limited availability.