India's first underwater rail-road twin tunnel under the Brahmaputra river will connect Gohpur on the north bank to which location on the south bank?
The Brahmaputra Rail-Road Twin Tunnel connects Gohpur (NH-15) on the north bank to Numaligarh (NH-715) in Golaghat district on the south bank. The main tunnel is 15.79 km long (twin-tube: one rail, one 4-lane highway), approximately 32 metres below the deepest river bed level. Total project cost: Rs 18,662 crore. Travel time cut from 6 hours to 20 minutes.
💡 Concept Note
The Brahmaputra divides Assam into North Bank and South Bank with very limited crossing points. The Bogibeel Bridge (Dibrugarh, December 2018) is the longest rail-road bridge in India at 4.94 km. The Bhupen Hazarika Setu (Dhola-Sadiya, 2017) is the longest river bridge in India at 9.15 km. The new tunnel provides India’s first flood-proof, year-round north-south connection in Assam’s seismic zone V.
Previous failed removal attempts: 1954 (G.V. Mavalankar), 1966 (Hukam Singh), 1987 (Balram Jakhar). The high effective majority threshold makes removal extremely difficult in practice. During removal proceedings, the Speaker may participate in debate but cannot preside over the House; the Deputy Speaker chairs the session. Effective majority means a majority of the total membership minus vacancies.
High-Altitude Pseudo-Satellites (HAPS) for the Indian Air Force operate at which altitude range in the stratosphere?
HAPS operate in the stratosphere at 18-22 km altitude. They are solar-powered and can remain airborne for months, providing persistent ISR (Intelligence, Surveillance, Reconnaissance). India’s NAL (National Aerospace Laboratories) tested a prototype in February 2024 at Challakere Aeronautical Test Range, Karnataka. The Defence Acquisition Council (DAC) granted Acceptance of Necessity for HAPS as part of a strategic ISR capability build-up.
💡 Concept Note
HAPS fill the surveillance gap between LEO satellites (400-1,200 km, intermittent pass-over coverage) and MALE UAVs like Heron (5-10 km, shorter endurance). A HAPS at 20 km altitude has a sensor footprint of 500-800 km diameter, providing near-continuous border surveillance. The 2017 Doklam standoff revealed India’s need for persistent 24/7 surveillance of the Himalayan border. NewSpace Research and Technologies (Bengaluru) is the key private sector partner.
The National Large Optical-Near Infrared Telescope (NLOT) being built in Ladakh will have a segmented mirror of what diameter?
The NLOT will have a 13.7-metre segmented primary mirror comprising 90 hexagonal segments, to be located at Hanle, Ladakh. It is India’s most ambitious ground-based optical telescope, approved in Union Budget 2026. The Hanle Dark Sky Reserve is the world’s largest high-altitude dark sky reserve at 4,500 metres above sea level.
💡 Concept Note
The Himalayan Chandra Telescope (HCT) is already operational at Hanle (2.01 metres), operated by the Indian Institute of Astrophysics remotely from CREST, Hosakote, Karnataka. The companion NLST (2-metre solar telescope) will be at Merak near Pangong Tso. India has experience in segmented mirror technology through participation in the Thirty Meter Telescope (TMT) project. The world’s largest optical telescope under construction is the ELT (Extremely Large Telescope, 39.3 metres) in Chile.
New radiocarbon dating of Bhirrana site pottery suggests the Indus Valley Civilisation had organised settlements dating back approximately how many years?
Radiocarbon dating of pottery and animal remains from Bhirrana (Haryana) suggests human settlement stretching back approximately 8,000 years — challenging the traditional Harappan chronology of 2600-1900 BC. This would predate Egypt’s earliest pharaohs and suggest gradual cultural evolution rather than sudden urbanisation.
💡 Concept Note
The Indus Valley Civilisation (Harappan) mature phase is traditionally dated 2600-1900 BC. Major sites: Mohenjo-daro and Harappa (both Pakistan), Dholavira (Gujarat — UNESCO World Heritage Site), Lothal (Gujarat), Rakhigarhi (Haryana — largest IVC site in India), Kalibangan (Rajasthan). Bhirrana and Rakhigarhi have produced the oldest evidence of IVC occupation, pushing back the human settlement timeline significantly.
The Sangtam tribe, which passed a resolution to protect pangolins, belongs to which state?
The United Sangtam Likhum Pumji (USLP), the apex tribal body of the Sangtam Naga community, passed a resolution banning pangolin hunting and trade within Kiphire and Tuensang districts of Nagaland in February 2026. The India-Myanmar border (~1,643 km) is a major trafficking corridor for pangolins. Two pangolin species occur in Northeast India: Indian Pangolin (Manis crassicaudata) and Chinese Pangolin (Manis pentadactyla).
💡 Concept Note
Pangolins are the world’s most trafficked wild mammals (scales used in traditional Chinese medicine; meat as bushmeat). Both species are CITES Appendix I and IUCN Red List. The Wildlife Trust of India (WTI) leads the Countering Pangolin Trafficking Project, supported by the Wildlife Conservation Network’s Pangolin Crisis Fund. Community-based conservation through tribal governance is increasingly recognised as effective in Northeast India where customary land rights and forest governance overlap.
The NITI Aayog Viksit Bharat plus Net Zero roadmap targets India reaching what renewable energy capacity by 2070?
NITI Aayog’s 11 inter-ministerial working group reports target renewable capacity growing from approximately 164 GW (2025) to 6,000+ GW by 2070 on the path to Net Zero. Nuclear power is targeted to grow from 8 GW to 300+ GW by 2070. Total investment needed: USD 22.7 trillion; financing gap: USD 6.5 trillion.
💡 Concept Note
India’s current NDC (Paris Agreement) targets: 500 GW non-fossil capacity by 2030, 50% energy from renewables by 2030, Net Zero by 2070. GDP target under Viksit Bharat: USD 4.18 trillion (2025) to USD 30 trillion (2047). Electricity share in final energy demand: 21% (2025) to 60% (2070). India is already the world’s 3rd largest renewable energy producer (after China and USA).
India's DISCOM reforms reduced AT&C (Aggregate Technical and Commercial) losses from 22.62% to what level?
AT&C losses declined from 22.62% to 15.04% following DISCOM reforms. DISCOM Profit After Tax reached Rs 2,701 crore in FY 2024-25 and legacy dues fell from Rs 1,39,947 crore (June 2022) to Rs 4,927 crore (January 2026). Key reform schemes: UDAY (Ujjwal DISCOM Assurance Yojana, 2015) and RDSS (Revamped Distribution Sector Scheme, Rs 3,03,758 crore outlay).
💡 Concept Note
AT&C losses include technical losses (transmission line heat dissipation) and commercial losses (electricity theft, billing failures, non-payment). High AT&C losses were the main reason Indian DISCOMs were chronically loss-making. UDAY had states take over 75% of DISCOM debt in exchange for performance commitments. RDSS replaced IPDS and focuses on smart metering and infrastructure upgrades to reduce losses further.
The WHO prequalified nOPV2 targets which specific poliovirus threat?
The novel Oral Polio Vaccine type 2 (nOPV2) targets circulating vaccine-derived poliovirus type 2 (cVDPV2) — the main remaining polio threat in most of the world. It is genetically re-engineered to be more genetically stable than earlier OPV2, reducing the risk of the vaccine virus reverting to a virulent form. Global leaders pledged USD 1.9 billion for eradication at the Polio pledging conference.
💡 Concept Note
Wild poliovirus type 2 (WPV2) was certified eradicated globally in 2015; WPV3 in 2019. Only WPV1 remains endemic (in Afghanistan and Pakistan). However, cVDPV2 emerged from older OPV2 vaccine strains mutating in under-immunised populations in Africa and parts of Asia. India was certified polio-free in March 2014. The Global Polio Eradication Initiative (GPEI) was launched in 1988; it is a public-private partnership led by WHO, Rotary International, CDC, UNICEF, and the Bill & Melinda Gates Foundation.
Rajasthan is India's largest wool-producing state. Which two indigenous sheep breeds dominate its wool production?
Rajasthan’s wool production (16,013 thousand kg in FY24, approximately 47.5% of national output) is dominated by the Marwari and Chokla indigenous sheep breeds. Chokla is also known as the “Merino of India” for its relatively finer wool. India ranks 9th globally in wool production.
💡 Concept Note
India has 75+ sheep breeds recognised by NBAGR. Key wool-producing breeds by region: Marwari and Chokla (Rajasthan), Nali (Rajasthan/Haryana), Deccani (Maharashtra/AP/Karnataka), Gaddi (Himachal Pradesh), Rampur Bushair (UP/HP). India is a net importer of fine wool for the apparel textile industry; merino wool is imported primarily from Australia. About 85% of India’s wool production is carpet-grade (coarse variety).