Science & Technology Current Affairs MCQs

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The study of archaea, a domain of ancient microorganisms, has provided valuable insights into survival strategies in extreme environments. Archaea, meaning “ancient things” in Greek, are among the oldest life forms and belong to the third domain of life. These are primitive microorganisms. They are slow-growing and can also be found in the human gut, potentially impacting health. Archaea are known for producing antimicrobial molecules and exhibiting antioxidant activity. They have promising applications, particularly in eco-friendly wastewater treatment. They exist in extreme environments like hydrothermal vents, hot springs, and saline or acidic habitats.

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Yemen is the most cholera-affected country globally, as reported by the World Health Organization (WHO). Cholera is a diarrheal infection caused by consuming food or water contaminated with Vibrio cholerae. Most cases show mild or no symptoms and can be treated with oral rehydration solution, but it can be fatal without prompt treatment. Safe access to water, sanitation, and hygiene (WASH) is critical for cholera prevention. The Oral Cholera Vaccine (OCV) is an effective tool for cholera prevention and control.

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ISRO launched the “Space Docking Experiment” (SpaDeX) mission on 30 December from Sriharikota’s Satish Dhawan Space Centre. The mission aims to develop technology for docking, undocking, and power transfer between spacecraft. Two small spacecraft, SDX01 (Chaser) and SDX02 (Target), each weighing 220 kg, will dock in a 476-km low-Earth orbit. The launch vehicle for this mission is Polar Satellite Launch Vehicle-C60 (PSLV-C60). The mission uses the indigenous “Bharatiya Docking System” and will make India the fourth country to achieve this feat. SpaDeX will support India’s future space exploration goals, including lunar missions and the Bharatiya Antariksha Station.

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IIT-Madras has commissioned Asia’s largest shallow wave basin research facility at its Discovery campus in Thaiyur. The facility handles complex wave and current interactions, addressing challenges in Indian ports, waterways, and coastal engineering. Developed indigenously, it is supported by the National Technology Centre for Ports Waterways and Coasts (NTCPWC). The facility can test coastal structures, post-impact analysis, solar floating plants, and climate change effects. It is equipped with a mobile wave maker, enabling multiple projects and international research collaborations. This facility strengthens IIT-Madras as a global leader in marine science and engineering.

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More than 30 dermatologists suggest renaming the fungus Trichophyton indotineae as its origin in India is unconfirmed despite reports from over 40 countries. Trichophyton indotineae is a fungal pathogen causing severe, treatment-resistant skin infections. It was named after India in 2020 based on isolates from India and Nepal. The fungus belongs to the dermatophyte group, causing dermatophytosis, which affects the skin, hair, and nails. It causes itchy, inflammatory infections on the groin, gluteal region, trunk, and face, affecting all ages and genders. It spreads via direct skin contact or contaminated objects and is resistant to terbinafine.

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Scientists are concerned about the potential for ‘zombie deer’ disease, or Chronic Wasting Disease (CWD), to affect humans. CWD is a fatal neurological disease that primarily affects deer, elk, moose, and reindeer. Caused by prions, misfolded proteins that damage the brain, leading to severe dysfunction and spongy tissue. It spreads through body fluids like saliva, feces, blood, and urine, and can remain infectious in the environment for years. Symptoms include weight loss, behavioral changes, and increased drinking and salivation. There is no cure or vaccine, and although there’s no confirmed human transmission, experts remain cautious.

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Taiwan will deploy advanced National Advanced Surface-to-Air Missile Systems (NASAMS) in North Taiwan to protect Taipei. NASAMS is a medium-range, ground-based air defense system developed by Raytheon (USA) and Kongsberg Defence & Aerospace (Norway). The system defends against aircraft, helicopters, cruise missiles, UAVs, and air-to-surface threats. It protects high-value assets and population centers and has been part of the US capital’s air defense since 2005. NASAMS is the first networked short- and medium-range system, integrating with other defense equipment.

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South Africa’s MeerKAT telescope discovered a new giant radio galaxy (GRG) named ‘Inkathazo,’ meaning ‘trouble’ in Xhosa and Zulu. The galaxy spans 3.3 million light-years, 32 times the size of the Milky Way, and is 1.44 billion light-years from Earth. GRGs are massive structures that emit jets of hot plasma powered by supermassive black holes. These jets glow at radio frequencies and stretch millions of light-years into space. Once considered rare, GRGs are now being discovered frequently due to advanced radio telescopes like MeerKAT in South Africa’s Northern Cape.

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The Centre for Nano and Soft Matter Sciences (CeNS) in Bengaluru, India developed the high-entropy alloy (HEA) catalyst for hydrogen production. CeNS is an autonomous institute of the Department of Science and Technology (DST). The catalyst is made of platinum, palladium, cobalt, nickel, and manganese (PtPdCoNiMn). The catalyst was prepared using two methods: electrodeposition and solvothermal processes.  The catalyst is more efficient than pure platinum and uses seven times less platinum than commercial catalysts.  The catalyst is stable and efficient for over 100 hours in alkaline seawater.

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Brucellosis, a bacterial disease, caused the death of an 8-year-old in Kerala. It is caused by Brucella bacteria, mainly infecting cattle, goats, sheep, swine, and dogs. Humans get infected through direct contact with animals, consuming contaminated animal products, or inhaling airborne agents. Unpasteurised milk and cheese from infected animals are the most common sources. Symptoms include fever, weakness, weight loss, and discomfort, often mild and undiagnosed.