21. Which country launched the world’s largest Compressed Air Energy Storage (CAES) technology?
[A] Russia
[B] India
[C] Israel
[D] China
Show Answer
Correct Answer: D [China]
Notes:
China launched the world’s largest Compressed Air Energy Storage (CAES) project, “Nengchu-1”. It has begun full operation in Yingcheng, Hubei Province, China. It marks a milestone in China’s energy storage technologies and is the largest CAES facility globally. CAES stores electrical energy as potential energy by compressing air into sealed spaces like underground mines or salt rock caverns. Energy is stored during off-peak hours and released to the grid during peak demand.
22. Which organization has developed Combat Air Teaming System (CATS) warrior?
[A] Hindustan Aeronautics Limited (HAL)
[B] Defence Research and Development Organisation (DRDO)
[C] Indian Space Research Organisation (ISRO)
[D] None of the Above
Show Answer
Correct Answer: A [Hindustan Aeronautics Limited (HAL) ]
Notes:
Hindustan Aeronautics Limited (HAL) conducted the engine ground run of the Combat Air Teaming System (CATS) Warrior on January 11, 2025, ahead of Aero India 2025. Combat Air Teaming System (CATS) is an Indian unmanned and manned combat aircraft teaming system. Hindustan Aeronautics Limited (HAL) developed this system. The system enhances surveillance, strike capabilities, and reduces human error.
23. Which institute has developed bacterial enzyme-based solution to degrade plasticizers?
[A] IIT Bombay
[B] IIT Madras
[C] IIT Kanpur
[D] IIT Roorkee
Show Answer
Correct Answer: D [IIT Roorkee]
Notes:
IIT Roorkee researchers developed a method to degrade plasticizers like diethyl hexyl phthalate (DEHP) using bacterial enzymes. DEHP is found in plastics and personal care products, posing health risks. Esterase enzyme from Sulfobacillus acidophilus breaks DEHP into mono-(2-ethylhexyl) phthalate (MEHP) and 2-ethyl hexanol. The enzyme was structurally studied using X-ray crystallography and remains active for about a month. Researchers used four additional enzymes from Comamonas testosteroni to complete the degradation process. Integrating enzymes into bacteria ensures prolonged activity and continuous degradation without needing fresh batches. Plasticizers enhance flexibility and shine in products but can be absorbed through the skin, posing health dangers.
24. What is the name of the second multi-purpose vessel (MPV) recently launched for the Indian Navy?
[A] INS Utkarsh
[B] INS Vikrant
[C] INS Sangam
[D] INS Karanj
Show Answer
Correct Answer: A [INS Utkarsh]
Notes:
Larsen & Toubro launched the second multi-purpose vessel, INS Utkarsh, for the Indian Navy at Kattupalli Shipyard near Chennai. INS Utkarsh, meaning “Superior in Conduct,” is built by L&T Shipbuilding Limited. The vessel is 106m long, 18.6m wide, with a displacement over 3,750 tonnes, and a maximum speed of 15 knots. It will enhance maritime surveillance, patrolling, and disaster relief capabilities of the Navy. The launch follows the first MPV, INS Samarthak, within three months. This aligns with India’s Aatmanirbhar Bharat and Make in India initiatives, showcasing indigenous shipbuilding progress.
25. India has designated which day as “Lokpal Day”?
[A] 14 January
[B] 15 January
[C] 16 January
[D] 17 January
Show Answer
Correct Answer: C [16 January]
Notes:
The Lokpal of India has declared January 16 as “Lokpal Day,” with the first observance on January 16, 2025. The decision was made during a meeting on March 14, 2024. Lokpal Day highlights the establishment of the Lokpal and aims to raise awareness about its role in promoting transparency and accountability in governance.
26. Which animals are primarily affected by Chronic Wasting Disease (CWD), that was recently seen in news?
[A] Cows and goats
[B] Deer, elk, moose, and reindeer
[C] Birds
[D] Dogs and cats
Show Answer
Correct Answer: B [Deer, elk, moose, and reindeer]
Notes:
Scientists are concerned about the potential for ‘zombie deer’ disease, or Chronic Wasting Disease (CWD), to affect humans. CWD is a fatal neurological disease that primarily affects deer, elk, moose, and reindeer. Caused by prions, misfolded proteins that damage the brain, leading to severe dysfunction and spongy tissue. It spreads through body fluids like saliva, feces, blood, and urine, and can remain infectious in the environment for years. Symptoms include weight loss, behavioral changes, and increased drinking and salivation. There is no cure or vaccine, and although there’s no confirmed human transmission, experts remain cautious.
27. National Bureau of Fish Genetic Resources (NBFGR) was established under which institution?
[A] Indian Council of Agricultural Research (ICAR)
[B] Food and Agriculture Organization (FAO)
[C] National Biodiversity Authority (NBA)
[D] Ministry of Fisheries
Show Answer
Correct Answer: A [Indian Council of Agricultural Research (ICAR)]
Notes:
Around 100 tribal people from Pulicat will receive training in pearl spot culture, crab fattening, and clownfish aquaculture, organized by the National Bureau of Fish Genetic Resources (NBFGR). NBFGR was established in 1983 under Indian Council of Agricultural Research (ICAR), focuses on fish germplasm conservation. Its infrastructure was set up in Lucknow in 1999. NBFGR’s vision includes the sustainable utilization and conservation of fish genetic resources. The bureau works on documenting fish diversity, developing databases, genotyping, and genebanking to support fish population health and sustainability.
28. What is the name of the ISRO mission that successfully germinated lobia seeds in space?
[A] Plant Growth Module (PGM)
[B] Compact Research Module for Orbital Plant Studies (CROPS)
[C] Space Farming Initiative (SFI)
[D] Agricultural Research in Space (ARS)
Show Answer
Correct Answer: B [Compact Research Module for Orbital Plant Studies (CROPS)]
Notes:
The ISRO mission that successfully germinated lobia seeds (also known as cowpea seeds) in space is called the “CROPS” experiment, which stands for “Compact Research Module for Orbital Plant Studies”. The seeds sprouted on the fourth day, with leaves visible by the fifth day, marking a major milestone in space research. The experiment aims to develop sustainable food sources for long-term space missions and test plant growth in microgravity and controlled environments. Success supports astronauts by enabling food growth, oxygen generation, and CO₂ recycling in space. It highlights India’s capability in managing complex life-support systems and contributes to global space farming initiatives.
29. Where was the Asia’s second-largest ISKCON temple inaugurated recently?
[A] Gujarat
[B] Maharashtra
[C] Uttar Pradesh
[D] Odisha
Show Answer
Correct Answer: B [Maharashtra]
Notes:
Prime Minister Narendra Modi inaugurated the Sri Sri Radha Madanmohanji Temple of ISKCON in Navi Mumbai, Maharashtra, on January 15, 2025. The temple is now the second-largest ISKCON temple in Asia. The design of the temple blends spirituality and knowledge, with various facilities reflecting ISKCON’s mission to serve society.
30. Which country has developed the world’s most powerful hydrogen train engine recently?
[A] India
[B] China
[C] Japan
[D] France
Show Answer
Correct Answer: A [India]
Notes:
India has developed the world’s most powerful hydrogen train engine with 1,200 horsepower. It was made by Indian Railways using indigenous technology. The first trial run will be conducted on the Jind-Sonipat route in Haryana. This innovation supports hydrogen-powered trains and can be adapted for trucks, tugboats, and other vehicles.