Science & Technology Current Affairs MCQs

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The Union Minister for Earth Sciences recently visited the Low Temperature Thermal Desalination (LTTD) plant at Kavaratti in Lakshadweep to review desalination facilities. Low Temperature Thermal Desalination (LTTD) is a technology that converts seawater into drinking water by using temperature differences in ocean water. The project is implemented by National Institute of Ocean Technology under the Ministry of Earth Sciences. LTTD plants operate on eight Lakshadweep islands including Kavaratti, Minicoy, Agatti and Kalpeni, improving year-round drinking water supply.

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A new study found that Double Asteroid Redirection Test (DART) not only changed the motion of an asteroid but also slightly altered the orbit of the asteroid pair around the Sun. DART was launched in 2021 by National Aeronautics and Space Administration (NASA) to test asteroid deflection technology. It was the first planetary defence mission to change an asteroid’s path using the kinetic impact method. The spacecraft targeted a binary asteroid system of Didymos and its moonlet Dimorphos. In 2022, the spacecraft intentionally crashed into Dimorphos to alter its orbit around Didymos. The impact successfully changed the asteroid’s motion, proving humans can potentially deflect hazardous near-Earth objects in space.

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Avataar is India’s first amphibious drone, launched on 5 March 2026 by AquaAirX Autonomous Systems. It can operate both in air and underwater, combining drone flight with submarine-like diving for surveillance. The project received ₹12.5 crore seed funding from Rainmatter. It has reached TRL-6 (Technology Readiness Level-6), meaning a working prototype tested in real environments. It is built with carbon fibre body and anti-corrosion coatings to resist saltwater damage.

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Asteroid 2024 YR4 was recently confirmed by NASA to not collide with the Moon in 2032. It is an Apollo-type asteroid, meaning its orbit crosses Earth’s orbit but remains mostly outside it. It was discovered in 2024 by the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in Chile. In its name, Y indicates discovery in the second half of December, while R4 shows it was the 117th asteroid identified in that period. It is a Near-Earth Object (NEO) with size about 174–220 feet (53–67 metres). It likely originated from the central Main Asteroid Belt between Mars and Jupiter.

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U.S. drugmaker Pfizer and France’s Valneva reported that their experimental Lyme disease vaccine showed over 70% efficacy in a late-stage trial. Lyme disease, or Lyme borreliosis, is caused by the bacteria Borrelia burgdorferi. It affects the skin, nervous system, heart, and joints. The disease is named after Lyme, Connecticut, United States, where it was first identified in children in 1976. Lyme disease is common in North America, Europe, and parts of Asia. It is transmitted to humans through deer ticks (black-legged ticks) found in grassy, wooded, or bushy areas. Not all tick bites cause Lyme disease, and it cannot spread between humans or from pets.

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NASA is set to launch the Artemis II mission, which is part of its broader lunar exploration programme. Artemis II is a key mission under the Artemis programme, aimed at returning humans to the Moon in a sustained and strategic manner. The mission will send four astronauts on a crewed journey around the Moon, marking a major step in human space exploration. It is part of efforts to establish a long-term human presence on the Moon. The mission views the Moon as a platform for deeper space exploration, including future missions to Mars and beyond.

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Researchers at Indian Institute of Technology Guwahati developed energy-efficient bricks for passive cooling in buildings. The bricks use Phase Change Materials (PCM) to regulate indoor temperature. During the day, PCM melts to absorb heat, and at night, it solidifies to release stored heat gradually. The PCM used is OM35 with a melting point of 35°C, suitable for tropical climates. Porous biochar is used to prevent leakage by absorbing and holding molten PCM within the bricks. These bricks can reduce indoor wall temperature by about 3°C and lower cooling energy demand by 10–20%.

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India’s first indigenous Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu, has successfully attained criticality. A Fast Breeder Reactor (FBR) produces more fissile fuel than it consumes using fast neutrons. Criticality is the stage where a self-sustaining nuclear chain reaction is achieved. The 500 Megawatt Electric (MWe) PFBR is developed by Bharatiya Nabhikiya Vidyut Nigam Limited (BHAVINI). It uses Uranium-Plutonium Mixed Oxide fuel and liquid sodium as coolant. It supports India’s three-stage nuclear programme, enabling Thorium-232 to Uranium-233 conversion for long-term energy security.

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India has successfully demonstrated a 1,000-kilometre quantum communication network under the National Quantum Mission, a major breakthrough in secure communication technologies. The National Quantum Mission (NQM) was launched by the Department of Science & Technology with an outlay of Rs.6003 crore for 2023-24 to 2030-31. Its objective is to seed, nurture, and scale up scientific and industrial research and development (R&D) and create an innovative ecosystem in Quantum Technology (QT). It is one of nine initiatives under the Prime Minister’s Science Technology Innovation Advisory Council (PM-STIAC).

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Meta has launched a new artificial intelligence model, Muse Spark, under its Superintelligence Labs initiative. Muse Spark can perform tasks such as calorie estimation, object visualisation, and answering user queries. The model is currently available on Meta AI chatbot and will be expanded to WhatsApp, Instagram, and Facebook. Meta has acknowledged the feedback and plans to improve future versions of the model.