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.

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The National Archives of India (NAI) has added the private papers of former President Dr. A.P.J. Abdul Kalam to its rich collection, making a major contribution to India’s historical records. It works under the Ministry of Culture and stores old government records that are no longer active but important for research and administration. It is the largest archival repository in South Asia and protects records of lasting value to the Government of India. NAI was started as the Imperial Record Department on 11 March 1891 in Kolkata and moved to New Delhi in 1911. The full transfer of records to Delhi was completed in 1937. NAI also enforces the Public Records Act, 1993 and Public Record Rules, 1997. It preserves over 34 crore pages, including official files, maps, censuses, treaties, debates, rare manuscripts, and government documents.

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The Subaru Telescope in Hawaii recently used the Hyper Suprime-Cam to carry out a deep sky survey from the University of Tokyo. It reported a Sigma Eight (S8) value of 0.747, which matches earlier results from gravitational lensing studies. Sigma Eight (S8) is a key measure in cosmology that shows how matter is clustered or “clumpy” across the universe on a scale of 26 million light-years. It tells scientists how much visible and dark matter is gathered in different parts of space. This finding helps us understand how the universe evolved from a smooth early state after the Big Bang.

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Mizoram’s Animal Husbandry and Veterinary Department has reported over 3,050 pig deaths since March 2025 due to an outbreak of African Swine Fever (ASF) in the districts of Siaha, Lawngtlai, Lunglei, and Mamit. African Swine Fever (ASF) is a highly contagious viral disease that affects domestic and wild pigs with a mortality rate that can reach 100%. Though ASF does not affect humans, it severely impacts pig populations and causes major economic loss to farmers. The virus originated in Africa and has now spread globally.

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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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Recently, scientists observed repeated unrest at Campi Flegrei between 1982–1984 and 2011–2024, involving land uplift, earthquakes, and underground rumbling due to rising fluid pressure. Campi Flegrei, also called the Phlegraean Fields, is an active volcanic system located near Naples, Italy. Unlike single-cone volcanoes like Mount Vesuvius, Campi Flegrei is a large caldera, which is a sunken volcanic area formed after a huge eruption. The caldera spans about 12 to 15 kilometers and was formed by a massive eruption nearly 39,000 years ago. That eruption may have triggered climate changes that contributed to the decline of Neanderthals.

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Prime Minister Narendra Modi launched the seventh edition of the Khelo India Youth Games on May 4, 2025, through videoconferencing. The Khelo India Youth Games are being held in Bihar for the first time, from May 4 to 15, across five districts including Patna, Nalanda, Gaya, Bhagalpur, and Begusarai. More than 8,500 athletes and 1,500 technical staff are participating in 28 sports. Bihar has seen new institutions like the Khelo India State Centre of Excellence and Bihar Sports University set up.

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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:
The Cabinet Committee on Economic Affairs (CCEA), chaired by Prime Minister Narendra Modi, approved the revised SHAKTI scheme on May 8, 2025. SHAKTI stands for Scheme for Harnessing and Allocating Koyala Transparently in India, aimed at providing coal to thermal power plants. The revised policy simplifies the coal linkage process to help power plants meet short-term and long-term needs. It introduces two windows: coal at notified price and coal at premium over notified price. Central and state thermal power projects, including joint ventures, will get coal at notified price as per existing rules. States can allocate this coal to their own power companies or Independent Power Producers (IPPs) chosen through Tariff-Based Competitive Bidding (TBCB).

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The Hubble Space Telescope recently completed 35 years of space exploration since its launch on April 24, 1990. It is the first dedicated space-based telescope system and is named after astronomer Edwin Hubble. The idea of such a telescope was first proposed in the 1940s by US astronomer Lyman Spitzer. It was launched as a joint mission between the National Aeronautics and Space Administration (NASA) and the European Space Agency (ESA). ESA contributed 15% of the mission’s cost in return for 15% of observation time. Its launch was delayed from 1986 to 1990 due to technical issues and the Space Shuttle Challenger disaster. Hubble orbits Earth at around 569 km in Low Earth Orbit and observes ultraviolet, visible, and infrared light. It was designed to be repaired and upgraded in space, making it a renewable telescope. This historic telescope continues to help scientists understand galaxies, stars, and the vast universe beyond Earth.