41. India has inaugurated the world’s second National Environmental Standard Laboratory (NESL) in which city?
[A] Bengaluru
[B] New Delhi
[C] Chennai
[D] Hyderabad
Show Answer
Correct Answer: B [New Delhi]
Notes:
India inaugurated the world’s second National Environmental Standard Laboratory (NESL) and the world’s fifth National Primary Standard Facility for Solar Cell Calibration at CSIR–National Physical Laboratory (NPL), New Delhi. NESL will provide India-specific calibration and certification of air pollution monitoring systems, supporting regulatory bodies, industries, and startups, and improving policy enforcement under programmes like the National Clean Air Programme (NCAP).
42. Which telescope of NASA recently discovered a new astronomical object named Cloud-9?
[A] Spitzer Space Telescope
[B] Roman Space Telescope
[C] Hubble Space Telescope
[D] James Webb Space Telescope
Show Answer
Correct Answer: C [Hubble Space Telescope]
Notes:
NASA’s Hubble Space Telescope discovered a new astronomical object named Cloud-9. Cloud-9 is a starless, gas-rich, dark-matter-dominated cloud, classified as a Reionization-Limited H I Cloud (RELHIC). It is located 14 million light-years from Earth, near the spiral galaxy Messier 94 (M94). The cloud is made of neutral hydrogen (H I) spanning about 4,900 light-years, with a mass approx 1 million times the Sun. Cloud-9’s dark matter mass is estimated at 5 billion solar masses. It is a relic of early galaxy formation, a “failed galaxy” that did not form stars.
43. Vera C. Rubin Observatory, that was recently seen in news, is located in which country?
[A] Russia
[B] Germany
[C] China
[D] Chile
Show Answer
Correct Answer: D [Chile]
Notes:
Scientists used first images from the Vera C. Rubin Observatory to discover the fastest-spinning asteroid of its size, named 2025 MN45. The Vera C. Rubin Observatory is located on Cerro Pachón in the Chilean Andes at 8,684 feet altitude. It is named after astronomer Vera C. Rubin, who provided early evidence for dark matter. It is jointly funded by the United States National Science Foundation (NSF) and the United States Department of Energy (DoE). Its goals include studying dark matter and dark energy, mapping the Milky Way, tracking asteroids and comets, and observing changing cosmic objects.
44. Akatsuki mission, also called PLANET-C was operated by which space agency?
[A] Indian Space Research Organisation (ISRO)
[B] National Aeronautics and Space Administration (NASA)
[C] European Space Agency (ESA)
[D] Japan Aerospace Exploration Agency (JAXA)
Show Answer
Correct Answer: D [Japan Aerospace Exploration Agency (JAXA)]
Notes:
Japan officially ended the Akatsuki mission after losing contact with the spacecraft for over a year. Akatsuki, also called PLANET-C or Venus Climate Orbiter (VCO), was operated by Japan Aerospace Exploration Agency (JAXA). It was the only active spacecraft orbiting Venus, studying volcanism and atmospheric dynamics, especially super-rotation.
45. Borax is primarily composed of which elements?
[A] Boron, sodium, and oxygen
[B] Sodium, chlorine, and hydrogen
[C] Calcium, boron, and nitrogen
[D] Potassium, boron, and sulfur
Show Answer
Correct Answer: A [Boron, sodium, and oxygen]
Notes:
A 19-year-old college girl in Tamil Nadu died after consuming borax for weight loss. Borax is also called sodium tetraborate decahydrate, a white powdery mineral. It is composed of boron, sodium, and oxygen. It is used in glass and pottery glazes, metallurgy, welding flux, fertilizer additive, soap, disinfectant, mouthwash, and water softener. It naturally occurs in evaporite deposits from seasonal lake evaporation and can be synthetically produced.
46. Hanle Dark Sky Reserve is located in which state?
[A] Sikkim
[B] Ladakh
[C] Arunachal Pradesh
[D] Himachal Pradesh
Show Answer
Correct Answer: B [Ladakh]
Notes:
A rare blood-red aurora was recorded at the Indian Astronomical Observatory using an all-sky camera in Hanle, Ladakh. Hanle Dark Sky Reserve is located at about 4,500 metres altitude in the Changthang region of Ladakh. It lies within the Changthang Wildlife Sanctuary and has Bortle-1 category skies, the darkest level. It was notified in December 2022 and is India’s first International Dark Sky Reserve. The reserve is managed by the Indian Institute of Astrophysics under the Department of Science and Technology. It aims to reduce light pollution and promote astro-tourism for local livelihoods.
47. SPHEREx mission is an initiative of which space organization?
[A] National Aeronautics and Space Administration (NASA)
[B] European Space Agency (ESA)
[C] China National Space Administration (CNSA)
[D] Japan Aerospace Exploration Agency (JAXA)
Show Answer
Correct Answer: A [National Aeronautics and Space Administration (NASA)]
Notes:
NASA’s SPHEREx mission recently observed interstellar comet 3I/ATLAS, the third such object discovered in our solar system. SPHEREx stands for Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer. It is a NASA Astrophysics mission launched on March 11, 2025. The telescope has a megaphone-shaped design and will conduct an all-sky spectral survey. It surveys the sky in optical and near-infrared light, which helps study cosmic phenomena invisible to the human eye.
48. Which state is home to India’s first Quantum Valley (Amaravati Quantum Valley)?
[A] Andhra Pradesh
[B] Gujarat
[C] Karnataka
[D] Maharashtra
Show Answer
Correct Answer: A [Andhra Pradesh]
Notes:
India entered the quantum era with the launch of the Amaravati Quantum Valley on 8 February 2026. It is supported by the ₹6,000 crore National Quantum Mission to make India a global deep-tech power. The Amaravati Quantum Valley is India’s first integrated quantum ecosystem spread over 50 acres. It brings together government, universities, and companies like International Business Machines (IBM) and Tata Consultancy Services (TCS). It is located in Andhra Pradesh. It will support healthcare, finance, defence, secure communication, and create jobs while strengthening national security.
49. What is the primary objective of the National Large Solar Telescope (NLST)?
[A] To study exoplanets outside the solar system
[B] To study the Sun’s dynamics, magnetism and space-weather processes
[C] To observe distant galaxies and dark matter
[D] To monitor Earth’s climate change
Show Answer
Correct Answer: B [To study the Sun’s dynamics, magnetism and space-weather processes]
Notes:
In the Union Budget, the government approved National Large Solar Telescope (NLST) and National Large Optical–Near Infrared Telescope. National Large Solar Telescope (NLST) is a 2-metre aperture solar telescope being set up at Merak near Pangong Tso Lake. It will study the Sun in visible and near-infrared wavelengths of the electromagnetic spectrum. It will help in understanding solar dynamics, magnetism and space weather affecting Earth and satellites. National Large Solar Telescope (NLST) will become India’s third ground-based solar observatory.
50. Bio-AI Mulankur hubs have been announced by which ministry?
[A] Ministry of Health and Family Welfare
[B] Ministry of Science and Technology
[C] Ministry of Agriculture and Farmers’ Welfare
[D] Ministry of Finance
Show Answer
Correct Answer: B [Ministry of Science and Technology]
Notes:
Ministry of Science and Technology announced the establishment of Bio-AI Mulankur hubs to strengthen integration of biotechnology and Artificial Intelligence. Aim is to create integrated closed-loop research platforms where Artificial Intelligence based predictions are tested and validated in laboratories within the same system. This will reduce gap between computational research and experimental results. Initiative is aligned with BioE3 Policy, which stands for Biotechnology for Environment, Economy and Employment. It aims to promote sustainable development, economic growth and job creation through biotechnology. Implementing agencies are Department of Biotechnology and Biotechnology Industry Research Assistance Council.