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:
Maharashtra has topped the CareEdge State Ranking Report 2025, released by CARE Ratings Ltd (CareEdge Ratings). This is the second edition of the CareEdge State Rankings. The rankings evaluate state performance across seven key pillars: economic performance, fiscal management, infrastructure development, financial sector growth, social development, governance quality, and environmental sustainability. The evaluation uses 50 measurable indicators. The primary aim is to provide a data-driven assessment of state performance. The rankings help identify strengths, gaps, and opportunities for policy improvement. This report offers valuable insights for improving state governance and development strategies.

Notes:
Odisha Housing and Urban Development (H&UD) Minister Krushna Chandra Mahapatra launched SAHAJOG to help urban poor access government welfare schemes. SAHAJOG stands for a unique initiative that identifies eligible urban poor and connects them to social schemes through awareness, doorstep services, and better local implementation. In the first phase, it covers 44 Urban Local Bodies (ULBs) in 8 districts and aims to reach over 15 lakh people. The initiative will run in a fast-track campaign mode till June 20 and aligns with “Viksit Odisha” and “Vikasit Bharat” goals. An app will soon be launched to help connect beneficiaries, and rural areas will be covered in the next phase.

Notes:
A new non-contact wearable device developed by researchers from the United States and South Korea can monitor health by measuring skin flux without touching the skin. The device is about the size of a smartphone and tracks molecular movements like vapour leaving the body and chemicals entering through the skin. It was developed under the leadership of Professor John A. Rogers at Northwestern University, USA. It creates a small sealed microclimate next to the skin and uses wireless electronics and tiny sensors to detect water vapour, carbon dioxide (CO₂), and volatile organic compounds (VOCs). A remote-controlled valve adjusts the chamber’s openness for accurate comparisons.

Notes:
Tissue-cultured teak is being promoted in India as a high-yield, fast-return solution to enhance timber cultivation and trade, sparking discussions on its economic and ecological impact. Teak (Tectona grandis) is renowned for its strength, durability, and resistance to pests and water, earning it the title “king of timbers.” It is a valuable tropical hardwood used in shipbuilding, furniture, and flooring. India holds 35% of the world’s planted teak forests, with Asia contributing over 95% of global teak resources. Madhya Pradesh and Maharashtra have the largest areas of native teak forests, according to the FAO Global Teak Resources and Market Assessment 2022. Teak is native to South and Southeast Asia and grows mainly in moist deciduous forests.

Notes:
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.

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.

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Defence Research and Development Organisation (DRDO) has successfully conducted the first flight trial of the Stratospheric Airship Platform in Sheopur, Madhya Pradesh. The platform was developed by DRDO’s Aerial Delivery Research and Development Establishment (ADRDE) based in Agra. The airship carried an instrumental payload and reached a high altitude of about 17 kilometres. The total flight lasted 62 minutes and helped gather important data through onboard sensors. This data will help in building accurate simulation models for future high-altitude missions. The test also checked the envelope pressure control and emergency deflation systems, and the airship was safely recovered.

Notes:
Lawrence Wong has been elected as Prime Minister of Singapore. He is from the People’s Action Party (PAP), which has ruled Singapore since independence. Wong is an economist and served as the Finance Minister since 2021 before becoming Prime Minister. In the 2025 general elections, under his leadership, PAP won 87 out of 97 parliamentary seats. This included 82 seats through voting and 5 uncontested. The PAP’s popular vote increased to 65.6 percent, showing strong public support.

Notes:
Maharashtra has become the first Indian state to approve a dedicated and independent Shipbuilding, Ship Repair and Ship Recycling Policy. The goal is to make Maharashtra a leading hub for shipbuilding, ship repair, and ship recycling. The state targets an investment of ₹6,600 crore and 40,000 jobs by 2030. By 2047, the aim is to attract ₹18,000 crore in investments and create 3.3 lakh jobs. The policy supports research and development (R&D), modern technology, and skilled workforce. It aims to contribute one-third of India’s total shipbuilding output by 2030.