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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The Reserve Bank of India (RBI) has made it mandatory for all banks, financial institutions, and regulated entities to submit applications through the PRAVAAH portal from May 1, 2025. PRAVAAH stands for Platform for Regulatory Application, Validation, and Authorization. It is a secure, web-based digital portal launched by RBI on May 28, 2024. The portal serves as a single-window system for applying for RBI permissions, licenses, and approvals. This step aims to improve transparency, reduce paperwork, and speed up the approval process. It ensures faster communication between applicants and the RBI.

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Kamla Persad-Bissessar has been elected as the next Prime Minister of Trinidad and Tobago after her party, United National Congress, won the parliamentary elections. This marks a strong comeback for the 73-year-old leader who earlier served as Prime Minister from 2010 to 2015. She remains the only woman ever to have led the Caribbean nation. Trinidad and Tobago is a twin-island country in the Caribbean with its capital at Port of Spain.

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Jal Shakti Minister C R Paatil held a review meeting on 30 April with the Wildlife Institute of India to assess the progress of the ‘Jalaj’ project. The ‘Jalaj’ project is a key initiative developed by the Ministry of Jal Shakti to support the rejuvenation of the Ganga River and biodiversity conservation. It involves setting up floating platforms on the Ganga River to promote livelihood activities for local communities. These platforms also raise awareness about conserving the river and its ecosystem. The project blends ecological restoration with sustainable development for Ganga-dependent populations.

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The National AYUSH Mission (NAM) Conference 2025 takes place on May 1-2 at Kaivalyadhama in Lonavala, Maharashtra. The event is organized by the Ministry of Ayush to strengthen the integration of traditional Indian medicine systems into mainstream healthcare. The conclave aims to foster a collaborative ecosystem, discuss latest developments, research innovations, and sectoral collaborations across various AYUSH systems.

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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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The government introduced the “Depot Darpan” portal and mobile app to monitor food storage depots in real time. Ministry of Consumer Affairs, Food & Public Distribution is responsible for launching the Depot Darpan portal. The initiative aims to ensure quality and safety in food grain storage for over 80 crore beneficiaries. Depot Darpan is part of a larger push for scientific warehousing and smart storage solutions. It will allow depot managers to track infrastructure, operational efficiency, and financial performance using geo-tagged data. The platform will provide automated ratings and insights for timely improvements. All data will be 100% validated by supervisory officers and random third-party audits.

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On May 2, 2025, Australian boatbuilder Incat launched the world’s largest electric-powered ship, named Hull 096. The ship is a 130-metre-long aluminium catamaran designed for South American ferry operator Buquebus. It can carry 2,100 passengers and up to 225 vehicles across the River Plate between Buenos Aires and Uruguay. Hull 096 is powered by over 250 tonnes of batteries with an Energy Storage System (ESS) providing more than 40 megawatt hours of capacity. It was initially planned to run on Liquefied Natural Gas (LNG) but was later converted to battery power. The launch highlights a major step towards reducing maritime carbon emissions, which account for about three percent of global greenhouse gas emissions. This comes after the International Maritime Organization (IMO) voted for a global carbon pricing system, with cleaner fuels required by 2028.

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Scientists from the University of Oxford have suggested a new way to monitor volcanic eruptions using a method called shear-wave splitting. Shear-wave splitting happens when seismic waves travel at different speeds depending on their direction, especially through rocks with tiny cracks. This technique was studied at Mount Ontake in Japan, which is an active stratovolcano located on Honshū Island, near Tokyo. Mount Ontake is Japan’s second-highest volcano and lies in the Pacific Ring of Fire.

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Iran recently unveiled a new solid-fuel ballistic missile named Ghassem Basir. It is a Medium-Range Ballistic Missile (MRBM) developed to strike targets over 1,200 kilometers away. The missile is about 11 meters long and weighs around 7 tons. It uses carbon fiber composite material for its body, making it lighter and harder to detect by radar. It runs on solid fuel, making it quicker to launch and easier to store than liquid-fuel missiles. It can reach speeds up to Mach 12. A thermal imaging sensor helps it track targets using heat in the final phase of flight. It has a Maneuverable Reentry Vehicle (MaRV) that detaches mid-flight to avoid radar and improve accuracy. It can be launched from mobile Transporter-Erector-Launchers (TELs), even from vehicles that look like civilian trucks.