Current Affairs Quiz - May 2025

Notes:
Under the Swachh Bharat Mission-Urban, Ghaziabad issued India’s first Certified Green Municipal Bond, raising ₹150 crore for a Tertiary Sewage Treatment Plant (TSTP). This bond marks a major shift towards sustainable urban infrastructure and financial innovation. The Tertiary Sewage Treatment Plant uses advanced Membrane Filtration Technologies like microfiltration, ultrafiltration, nanofiltration, and reverse osmosis (RO) to treat wastewater. The plant has a treatment capacity of 40 Million Litres per Day (MLD) and is linked to a 95 km pipeline network. It supplies treated water to over 1,400 industrial units, cutting dependence on freshwater sources.

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Finalists from 11 cities were selected through regional contests to compete in the WAM! (WAVES Anime & Manga Contest) national finale at WAVES 2025. The World Audio-Visual & Entertainment Summit (WAVES) 2025 is held from May 1 to 4, 2025, at the Jio World Convention Centre in Mumbai, India. WAVES (World Audio-Visual & Entertainment Summit) 2025 promotes India’s talent in Animation, Visual Effects, Gaming, Comics, and Extended Reality (AVGC-XR). The summit is themed “Create in India, Create for the World” to position India as a global creative powerhouse.

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The Central Bureau of Investigation (CBI) recently conducted multiple raids under Operation Hawk to crack down on cybercrime involving Online Child Sexual Exploitation (OCSE) with global links. The action followed inputs from United States (US) authorities and led to the arrest of two individuals from Mangalore and Delhi.The CBI’s International Operations Division registered cases under the Indian Penal Code (IPC), Information Technology (IT) Act, 2000, and Protection of Children from Sexual Offences (POCSO) Act, 2012.This comes as part of CBI’s broader efforts under earlier operations like Operation CARBON (2021) and Operation Megh Chakra (2022)

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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.

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The American Association of Petroleum Geologists and the United States Geological Survey (USGS) have recently launched formal hydrogen exploration initiatives. Hydrogen is seen as the fuel of the future due to its ability to help decarbonize the global economy and reduce greenhouse gas emissions. Natural hydrogen, or white hydrogen, is hydrogen that naturally occurs in the Earth’s crust, unlike industrially produced hydrogen. It forms through geological processes such as serpentinisation, where water reacts with iron-rich rocks, radiolysis, the breakdown of water by radioactive rocks, and the decomposition of organic matter in deep geological formations.

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The Ministry of Social Justice and Empowerment (MoSJE) and the United Nations Development Programme (UNDP) are now working together under the wastepickers component of the National Action for Mechanised Sanitation Ecosystem (NAMASTE) Scheme. UNDP is providing financial support to State Project Management Units (PMUs) to strengthen the scheme’s implementation. The NAMASTE Scheme was jointly launched by Ministry of Social Justice and Empowerment (MoSJE) and the Ministry of Housing and Urban Affairs (MoHUA) in 2023 to protect the safety and dignity of sanitation workers. Its wastepicker component was launched in 2024 with the goal to digitally profile and register 2.5 lakh wastepickers across India. It also provides health insurance under Ayushman Bharat–Pradhan Mantri Jan Arogya Yojana (PMJAY), and offers skill development training.

Notes:
Tunnel No. 8 (T-8) is set to become India’s longest railway tunnel at 14.57 km, overtaking Tunnel No. 50 (T-50), which is 12.77 km long on the Udhampur-Srinagar-Baramulla Railway Link. It is part of the Rishikesh–Karnaprayag Broad Gauge Rail Link Project in Uttarakhand. T-8 is a twin tunnel located on the Devprayag–Janasu stretch of this 125-km rail line. The Rishikesh–Karnaprayag Broad Gauge Rail Link Project is being implemented by Rail Vikas Nigam Limited (RVNL), a Navratna Public Sector Undertaking under the Ministry of Railways.

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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.

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In the 2025 World Press Freedom Index by Reporters Without Borders (RSF), India ranks 151 out of 180 countries. This is a slight improvement from 159th in 2024 and 161st in 2023, but India still remains in the “very serious” press freedom category. India ranks lower than neighbours like Nepal (90th), Maldives (104th), Sri Lanka (139th), and Bangladesh (149th). Norway, Estonia, and the Netherlands are the top three performers in press freedom globally. For the first time, global press freedom is seen as in a “difficult situation” due to rising economic pressures.

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Australian Prime Minister Anthony Albanese has been re-elected, becoming the first leader in decades to win a second term, marking a major political milestone. With around 70.8% of votes counted, the Australian Broadcasting Corporation (ABC) reports that the Labor Party is set to win 85 seats, well above the 76 needed for a majority. The Opposition Liberal National Coalition is likely to secure 36 seats, while Independents are expected to get 10. After his win, Albanese called being Prime Minister the greatest honour of his life while addressing supporters in Sydney.