DAILY CURRENT AFFAIRS IAS | UPSC Prelims and Mains Exam – 30th October – 2025
Archives (PRELIMS Focus) Indus Water Treaty (IWT) Category: International Relations Context: Writers are beginning to explain the ramifications of the suspension of the Indus Water Treaty, which was a shared heritage between India and Pakistan. About Indus Water Treaty (IWT): Parties: Indus Waters Treaty was signed on September 19, 1960, between India and Pakistan and was brokered by the World Bank. Objective: The treaty sets out a mechanism for cooperation and information exchange between the two sides on the use of the water of the Indus River and its five tributaries Sutlej, Beas, Ravi, Jhelum, and Chenab. Allocation of rivers: It prescribes how water from the six rivers of the Indus River System would be shared between India and Pakistan. It allocated the three western rivers Indus, Chenab and Jhelum to Pakistan for unrestricted use, barring certain non-consumptive, agricultural and domestic uses by India and the three Eastern rivers Ravi, Beas and Sutlej were allocated to India for unrestricted usage. Permanent Indus Commission: Under the Indus Waters Treaty, both countries must set up a Permanent Indus Commission, mandated to meet annually. Dispute Resolution Mechanism: The IWT provides a three-step dispute resolution mechanism under which “questions” on both sides can be resolved at the Permanent Commission, or can also be taken up at the inter-government level. Unresolved differences between the countries on water-sharing can be addressed by the World Bank-appointed Neutral Expert (NE). Appeal from a Neutral Expert of WB can be referred to a Court of Arbitration set up by the World Bank. Major projects under IWT: Pakal Dul and Lower Kalnai: Pakal Dul Hydro Electric Project is built on river Marusudar, a tributary of the Chenab. Lower Kalnai is developed on the Chenab. Kishanganga Hydroelectric Project: It is a run-of-the-river project located in J&K. Pakistan objected to the project arguing that it would affect the flow of the Kishanganga River (called the Neelum River in Pakistan). In 2013, The Hague’s Permanent Court of Arbitration (CoA) ruled that India could divert all the water with certain conditions. Ratle Hydroelectric Project: It is a run-of-the-river hydroelectric power station on the Chenab River, in J&K. Source: The Hindu Helium Category: Science and Technology Context: When cooled to just a few degrees above absolute zero, helium becomes a superfluid and can move freely without getting stuck, something impossible for any normal fluid. About Helium: Nature: It is an inert gas and does not react with other substances or combust. Atomic number: Its atomic number is 2, making it the second lightest element after hydrogen. Uniqueness: Helium has a very low boiling point (-268.9° C), allowing it to remain a gas even in super-cold environments. Non-toxic: The gas is non-toxic, but cannot be breathed on its own, because it displaces the oxygen humans need for respiration. Space technology: Helium is used to pressurize fuel tanks, ensuring fuel flows to the rocket’s engines without interruption; and for cooling systems. As fuel and oxidiser are burned in the rocket’s engines, helium fills the resulting empty space in the tanks, maintaining the overall pressure inside. Easy detection of leaks: Its small atomic size and low molecular weight mean its atoms can escape through small gaps or seals in storage tanks and fuel systems. But because there is very little helium in the Earth’s atmosphere, leaks can be easily detected – making the gas important for spotting potential faults in a rocket or spacecraft’s fuel systems. Source: The Hindu 8th Central Pay Commission (CPC) Category: Polity and Governance Context: The Union Cabinet has approved the Terms of Reference of the 8th Central Pay Commission (CPC), the body in charge of deciding the pay structure and retirement benefits of central government employees. About 8th Central Pay Commission (CPC): Nature: The 8th Central Pay Commission (CPC) is a temporary expert body set up by the Union Government to review and recommend revisions in the salary structure, allowances, and pension benefits of Central Government employees. Establishment: It was announced in January 2025 and formally constituted after Cabinet approval in October 2025 to ensure timely implementation from 2026. Composition: It has 3 members. It is headed by Justice Ranjana Prakash Desai (Retd.) and the other two members include Prof. Pulak Ghosh (IIM Bangalore) and Pankaj Jain, IAS (Petroleum Secretary). Tenure: The Commission will submit its final report within 18 months of constitution and may provide interim recommendations on specific issues. Coverage: The 8th CPC covers serving and retired employees of the Central Government, defence forces, All India Services, and Union Territories. Functions: It will examine and propose changes in pay scales, allowances, and pension structures. It will also consider the overall economic situation and maintain budgetary discipline while recommending pay revisions. Equity Across Sectors: It will ensure parity between Central services, PSUs, and private sector employees in terms of emoluments and working conditions. Sustainability of Pensions: It will address concerns related to non-contributory pension liabilities and their long-term fiscal implications. Expected Implementation: The recommendations are expected to come into effect from January 1, 2026, continuing the decade-long cycle of pay revisions followed since the First CPC (1946). Source: The Indian Express SJ-100 Aircraft Category: Defence and Security Context: The Hindustan Aeronautics Limited (HAL) and Russia’s United Aircraft Corporation (UAC) have signed a Memorandum of Understanding for production of civil commuter aircraft SJ-100. About SJ-100 Aircraft: Nature: It is a new generation short-haul jet aircraft of Russian origin. It is a twin-engine, narrow-body aircraft. Design: Earlier called the Sukhoi Superjet 100, it originally was designed by the now-merged Russian aircraft company Sukhoi Civil Aircraft. Operation: The aircrafts are being operated by more than 16 airlines across the world, nine of them being from Russia. Uses: The aircraft is primarily used for commercial purposes. It can operate at extreme weather conditions, from -55 degrees Celsius to +45 degrees Celsius. Seating capacity: It is capable of accommodating 103 seats and has a flight range of 3,530 kilometres. The aircraft has been touted as having low operating costs for airlines. Significance for India:
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