Current Affairs Quiz - May 2025

Notes:
Researchers at the Institute of Nano Science and Technology (INST), Mohali, have found a new way to improve green hydrogen production. They created a special heterostructure using Copper Tungsten Oxide and Copper Oxide. This structure uses the Built-In Electric Field (BIEF) effect to boost the Hydrogen Evolution Reaction (HER). The Copper Tungsten Oxide nanoparticles are grown over a Cu(OH)₂ base, forming a p-n heterojunction with an uneven electronic setup. This BIEF helps in better proton adsorption and desorption. Green hydrogen, made from water using clean energy, is a pollution-free fuel of the future.

Notes:
International Labour Day, also called International Workers’ Day, is celebrated every year on May 1 to honour the hard work and contributions of workers across all sectors. The day highlights the need for fair wages, safe working conditions, and reasonable working hours for all employees. It also reminds us of the struggle of workers in history and the continued importance of protecting their rights. The International Labour Organization (ILO), a United Nations agency, plays a key role in setting global labour standards.

Notes:
A rare inscription from the time of Vikramaditya I of the Badami Chalukya dynasty was recently found at Madapura Lake in Davangere district, Karnataka. Vikramaditya I ruled from 644 Common Era (CE) to 681 CE. He became king after the defeat of his father Pulakeshin II by the Pallava king Narasimhavarman I. His most important military success was the recapture of Vatapi, the Chalukya capital, from the Pallavas. He supported temple architecture and encouraged the construction of freestanding temples, a key feature of Chalukya style. The inscription offers new insights into his rule and regional history.

Notes:
The Indo Tibetan Border Police (ITBP) recently scaled Mt. Makalu, the fifth highest mountain in the world. Mt. Makalu stands at 8,485 meters above sea level and is located in the Mahalangur range of the Nepal Himalayas on the Nepal-Tibet border. It lies 23 kilometers southeast of Mount Everest and is part of the Makalu Barun National Park. The mountain is famous for its pyramid-like shape with sharp ridges and includes two subsidiary peaks, Makalu I and Makalu II.

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Recently, all political parties in Punjab united and firmly opposed releasing any extra water to Haryana from the Bhakra Dam, showing strong regional consensus. The Bhakra Dam is a concrete gravity dam built across the Sutlej River, located near the Punjab-Himachal Pradesh border. It stands near Bhakra village in Bilaspur district of Himachal Pradesh. It is the world’s highest straight gravity dam with a height of 207.26 meters. It is Asia’s second tallest dam after the 261-meter-high Tehri Dam in Uttarakhand. The dam is 518.25 meters long and about 9.1 meters wide at its crest.

Notes:
A research team from the Hong Kong University of Science and Technology (HKUST) has made the first-ever experimental observation of a two-dimensional layered altermagnet at room temperature. Altermagnets are a new class of antiferromagnetic materials that show momentum-dependent spin splitting without needing spin–orbit coupling (SOC) or overall magnetization. This spin splitting is caused by exchange interactions between magnetic sublattices connected by crystal symmetry, known as C-paired spin-valley locking (SVL). Altermagnets combine the stable spin properties of antiferromagnets with spin-split energy bands, making them promising for next-generation spintronic devices.

Notes:
Scientists are closely watching the Axial Seamount as it is expected to erupt for the first time in ten years. Axial Seamount is an underwater shield volcano located about 300 miles off the coast of Oregon, United States, in the Pacific Ocean. It has a large caldera at its summit and rises to a depth of 1,400 meters below sea level. The volcano was formed by a hot spot, where molten material from Earth’s mantle rises into the crust. It lies on the Juan de Fuca Ridge, the tectonic boundary between the Pacific and Juan de Fuca plates. It features hydrothermal vents, which are underwater hot springs that release mineral-rich plumes heated by magma.

Notes:
World Asthma Day 2025 is observed on 6th May, which is the first Tuesday of May. It is a global event organized every year by the Global Initiative for Asthma (GINA) to raise awareness about asthma. The day focuses on educating people about asthma, its triggers, and how it affects daily life. It began in 1998 during the first World Asthma Meeting in Barcelona, Spain. The theme for World Asthma Day 2025 is “Make Inhaled Treatments Accessible for ALL”. This theme highlights the urgent need for everyone with asthma to access inhaled medicines for better control. Asthma is a chronic disease where the lung airways become narrow, swollen, and produce extra mucus.

Notes:
Kozhikode city has recently been honoured with membership in the Global Network for Age-friendly Cities and Communities (GNAFCC) of the World Health Organization (WHO). GNAFCC was established in 2010 to help cities become better places for older people to live in. It has over 1300 members from 51 countries, promoting global cooperation on age-friendly policies. The aim is to connect cities, communities, and organizations to create supportive environments for ageing populations. It works to inspire change, share knowledge, and help cities find smart, practical solutions. This membership shows Kozhikode’s commitment to healthy ageing and inclusive urban development.

Notes:
On May 5, 2025, Yemen’s Presidential Leadership Council (PLC) appointed Salem Saleh Bin Braik as the new Prime Minister. This follows the sudden resignation of Ahmed Awad bin Mubarak, who stepped down due to constitutional limits and lack of power to implement key reforms. The leadership change is significant as Yemen continues to struggle with civil war and economic crisis. Salem Bin Braik has served as Finance Minister since 2019 and previously held the post of Vice Finance Minister along with other administrative roles. He was appointed just hours after bin Mubarak resigned.