Note4Students
From UPSC perspective, the following things are important :
Prelims level: ‘Blue Ghost’ Mission 1
Why in the News?
US’s Firefly Aerospace’s Blue Ghost Mission 1 successfully landed on the Moon, becoming the second private mission to do so and the first to land upright.
What is ‘Blue Ghost’ Mission 1?
- Blue Ghost Mission 1 is a private lunar landing mission by Firefly Aerospace under NASA’s Commercial Lunar Payload Services (CLPS) program.
- It was launched aboard a SpaceX Falcon 9.
- It successfully landed on the Moon, at Mons Latreille, Mare Crisium.
- The mission is designed to operate for 14 Earth days (one lunar day).
Key Features of Blue Ghost Mission 1:
- Carries 10 scientific instruments, including a lunar soil analyzer, a radiation-tolerant computer, and a GPS-based navigation experiment to test satellite navigation on the Moon.
- Equipped with a high-definition imaging system to capture a lunar eclipse (March 14, 2024) and lunar sunset (March 16, 2024).
- Successfully navigated a rocky and cratered surface using hazard-avoidance technology, slowing from thousands of miles per hour to just two mph before touchdown.
- The lander is golden in color and about the size of a hippopotamus.
- It supports Artemis missions by testing lunar technologies and reducing costs for future human exploration.
PYQ:
[2016] What is ‘Greased Lightning-10 (GL-10)’, recently in the news?
(a) Electric plane tested by NASA
(b) Solar-powered two-seater aircraft designed by Japan
(c) Space observatory launched by China
(d) Reusable rocket designed by ISRO |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Traditional water harvesting systems in India
Why in the News?
With summers nearing, the arid and semi-arid regions of Rajasthan particularly in Churu, Jaisalmer, and Barmer districts largely rely on ‘Kundi’ system of traditional rainwater harvesting.
What is Kundi System?
- Found in Churu, Rajasthan, kundis (or kunds) are traditional rainwater harvesting structures designed for storing drinking water.
- A circular or rectangular pit, often lined with bricks or stones, is dug into the ground.
- Rainwater is collected through sloped catchments and funneled into the kundi for storage.
- A lid or stone slab covers the pit to prevent contamination and evaporation.
- These structures help communities survive in regions with scarce groundwater and unpredictable rainfall.
Other Traditional Water Harvesting Systems in India
| Khadin (Rajasthan) |
Earthen embankment (bund) built across slopes to retain surface runoff for moisture conservation and groundwater recharge, used since the 15th century. |
| Johads (Rajasthan, Haryana) |
Small crescent-shaped embankments that store rainwater, recharge groundwater, prevent runoff, and improve water availability. |
| Baolis / Stepwells (Rajasthan, Gujarat, Delhi, MP) |
Deep stepwells with stairs leading to groundwater storage, used for drinking, irrigation, and bathing; famous examples include Rani ki Vav (UNESCO site) and Agrasen ki Baoli. |
| Virdas (Gujarat – Kutch region) |
Shallow wells dug in depressions to separate fresh rainwater from saline groundwater, used by Maldhari pastoralists for drinking and livestock. |
| Tankas (Rajasthan, Gujarat) |
Circular underground tanks built in homes and temples for storing rainwater; lined with lime for purification, found in Bikaner, Jaisalmer, and Dwarka. |
| Zabo (Nagaland) |
Terraced ponds built on hill slopes to collect rainwater for drinking, irrigation, and livestock, preventing soil erosion and increasing groundwater recharge. |
| Kuls (Himachal Pradesh, Uttarakhand, J&K) |
Small channels (kuls) diverting glacial meltwater to fields for irrigation, made of stones, wood, and mud, and managed by local communities. |
| Ahar-Pyne (Bihar, Jharkhand) |
Ancient system from the Mauryan period, where reservoirs (Ahar) collect rainwater, and channels (Pyne) distribute it for paddy cultivation. |
| Eri (Tamil Nadu) |
Interconnected chain of tanks developed during the Chola period for irrigation, groundwater recharge, and flood control, still supporting agriculture. |
| Surangam (Kerala, Karnataka) |
Horizontal tunnels dug into hillsides to extract water from aquifers, similar to Iran’s Qanat system, common in Malabar and Kasargod. |
| Phad Irrigation (Maharashtra) |
Community-managed canal irrigation system drawing water from rivers, used in drought-prone areas, managed by a village council (patkari system). |
PYQ:
[2021] Which one of the following ancient towns is well-known for its elaborate system of water harvesting and management by building a series of dams and channelizing water into connected reservoirs?
(a) Dholavira
(b) Kalibangan
(c) Rakhigarhi
(d) Ropar |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: National Science Day
Why in the News?
February 28 is observed as National Science Day in India to commemorate the discovery of the Raman Effect by Sir C.V. Raman in 1928. It is the only Nobel achieved by an Indian while working in India.
About National Science Day
- National Science Day is celebrated in India on February 28 every year.
- It marks the discovery of the Raman Effect by Sir C.V. Raman on February 28, 1928.
- The GoI declared this day as National Science Day in 1986 to promote scientific awareness.
- The primary objective of the day is to promote scientific temper, encourage research, and recognize India’s contributions to science.
- Schools, colleges, and research institutions organize seminars, science exhibitions, and debates to celebrate this day.
- The theme for National Science Day 2024 is “Empowering Indian Youth for Global Leadership in Science & Innovation for Viksit Bharat.”
Who was C.V. Raman?
- Chandrasekhara Venkata Raman was an Indian physicist born on November 7, 1888, in Tiruchirappalli, Tamil Nadu.
- He completed his Bachelor’s and Master’s degrees in Physics from Presidency College, Madras.
- He initially worked as an Assistant Accountant General but continued his passion for physics through research.
- In 1917, he became a professor at Calcutta University and conducted groundbreaking experiments.
- He established the Raman Research Institute in Bangalore in 1948, which became a major center for scientific research.
|
Contributions of C.V. Raman
- Raman Effect (1928): Proved that light changes wavelength when scattered by molecules.
- Inspired by the blue color of the Mediterranean Sea, disproving the earlier sky-reflection theory.
- Won the Nobel Prize in Physics in 1930, becoming India’s first Nobel laureate in science.
- Conducted research on vibrations of musical instruments like the veena, tabla, and mridangam.
- Raman Spectroscopy is widely used in chemistry, physics, medicine, and space exploration.
- Used by NASA in Mars Rover missions for mineral analysis.
- He established the Raman Research Institute to promote advanced scientific research in India.
- He contributed to strengthening India’s scientific infrastructure and mentored future physicists.
PYQ:
[2016] A recent movie titled The Man Who Knew Infinity is based on the biography of:
(a) S. Ramanujan
(b) S. Chandrasekhar
(c) S. N. Bose
(d) C. V. Raman |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Doomsday Fish
Why in the News?
Recent sightings of the rare oarfish, also known as the “Doomsday Fish,” near the shores of Baja California Sur, Mexico, have sparked speculation and social media frenzy.
About the ‘Doomsday Fish’
- Japanese Folklore calls the oarfish “Ryugu no tsukai” or “Sea God’s Palace Messenger” and believes its rare appearance signals an impending natural calamity.
- The belief gained strength in 2011 when multiple oarfish washed ashore in Japan just before the Tohoku earthquake and tsunami (9.0 magnitude).
- Some cultures also consider the oarfish a messenger of the deep, warning humans of major disturbances in the ocean.
Popular Legends
- Some scientists suggest that deep-sea fishlike oarfish may be sensitive to underwater vibrations from fault lines and could surface before an earthquake.
- However, no conclusive scientific evidence supports this theory.
- Powerful ocean currents, storms, or underwater disturbances may push weakened or dying oarfish toward the surface.
- The El Niño phenomenon or changes in water temperature might also affect their movements.
- A 2019 study in the Bulletin of the Seismological Society of America found no relationship between oarfish sightings and earthquakes in Japan.
PYQ:
[2017] Due to some reasons, if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences?
1. Pollination of some plants could be adversely affected.
2. There could be a drastic increase in the fungal infections of some cultivated plants.
3. It could lead to a fall in the population of some species of wasps, spiders and birds.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3 |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: PUNCH Mission
Why in the News?
NASA is set to launch the Polarimetry to Unify the Corona and Heliosphere (PUNCH) mission on February 28, 2025, aboard a SpaceX Falcon 9 rocket.
About the PUNCH Mission
- PUNCH Mission is a groundbreaking solar mission designed to study the Sun’s corona and solar wind using advanced imaging techniques.
- It will consist of 4 small satellites operating in Low Earth Orbit (LEO) for an expected two-year mission.
- Unlike previous missions, PUNCH will use polarimetry (measurement of polarized light) to observe solar phenomena in 3D.
- It allows scientists to study the origin and evolution of solar winds and Coronal Mass Ejections (CMEs), both of which impact space weather and Earth’s technological systems.
- Focus Areas of the PUNCH Mission:
-
- Study how the Sun’s outer corona transforms into the solar wind.
- Observe how CMEs are formed, gain speed, and travel through space.
- Improve space weather forecasting to protect satellites, astronauts, and power grids.
- Provide real-time data to help scientists predict solar storms and geomagnetic disturbances.
- Contribute to NASA’s Artemis program by ensuring safe deep-space exploration.
Key Features of the PUNCH Mission:
- 4 microsatellite weighs 64 kg each and works together to capture a wide-field view of the Sun’s corona.
- Advanced Imaging Instruments:
- Narrow Field Imager (NFI): Captures high-resolution images of the inner corona.
- Wide Field Imagers (WFIs): Observe solar wind and CMEs across interplanetary space.
- STEAM (X-ray spectrometer): Monitors coronal heating and solar flares.
- Provides real-time data every four minutes.
- Offers a 90° field of view, covering the Sun’s outer atmosphere and heliosphere.
- Helps mitigate the effects of solar storms on Earth’s communication systems.
- Aids in protecting astronauts and satellites from harmful solar radiation.
PYQ:
[2022] If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth?
- GPS and navigation systems could fail.
- Tsunamis could occur at equatorial regions.
- Power grids could be damaged.
- Intense auroras could occur over much of the Earth.
- Forest fires could take place over much of the planet.
- Orbits of the satellites could be disturbed.
- Shortwave radio communication of the aircraft flying over polar regions could be interrupted.
Select the correct answer using the code given below:
(a) 1, 2, 4 and 5 only
(b) 2, 3, 5, 6 and 7 only
(c) 1, 3, 4, 6 and 7 only
(d) 1, 2, 3, 4, 5, 6 and 7 |
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From UPSC perspective, the following things are important :
Prelims level: Chandra Shekhar Azad
Why in the News?
Leaders from across the political spectrum paid tributes to the freedom fighter Chandra Shekhar Azad on his martyrdom day (27th February 1931).
Who was Chandra Shekhar Azad?
- Chandra Shekhar Azad (1906–1931) was a revolutionary who played a key role in India’s independence struggle.
- Born in Bhabhra, Madhya Pradesh, he joined Gandhi’s Non-Cooperation Movement at 15 but turned to armed revolution after its suspension.
- He reorganized the Hindustan Republican Association (HRA) into the Hindustan Socialist Republican Association (HSRA) alongside Bhagat Singh.
- Azad vowed never to be captured alive and sacrificed himself in a shootout at Alfred Park, Allahabad, on February 27, 1931.
His Contributions to the Freedom Struggle
- Non-Cooperation Movement (1921): Arrested at 15, he declared his name as “Azad” (Free) in court and was punished with 15 lashes.
- Joining HRA (1924): Became a member of Ram Prasad Bismil’s HRA and raised funds through political dacoities.
- Kakori Train Robbery (1925): Helped loot a British train carrying treasury money; escaped capture while others were sentenced.
- Reorganizing HSRA (1928): Transformed HRA into HSRA with Bhagat Singh, introducing socialist ideology.
- Assassination of John Saunders (1928): Avenged Lala Lajpat Rai’s death, personally eliminating a police officer in the escape.
- Attempt to Blow Up Lord Irwin’s Train (1929): Planned to assassinate Viceroy Lord Irwin, but the plan failed.
- Final Stand (1931): Surrounded by British police, killed three officers, ensured his comrade’s escape, and shot himself with his last bullet.
PYQ:
[2020] Since the decade of the 1920s, the national movement acquired various ideological strands and thereby expanded its social base. Discuss. |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Tea Horse Road
Why in the News?
Recently, China’s Ambassador to India highlighted the historical significance of ‘Tea Horse Road’ in fostering Sino-Indian ties.
About the Tea Horse Road
- The Tea Horse Road originated during the Tang Dynasty (618-907 CE).
- Buddhist monk Yijing (635-713 CE) recorded early trade between China, Tibet, and India, mentioning exchanges of sugar, textiles, and herbs.
- By the Song Dynasty (960-1279 CE), the trade focused on tea exports to Tibet and importing horses for China’s military.
- The network spanned over 2,000 km, crossing treacherous mountain passes at altitudes above 10,000 feet.
- The Tea Horse Road was not a single road but a network of multiple routes. Two primary routes were:
- Yunnan Route: Starting from Pu’er and Dali, passing through Lijiang, reaching Lhasa (Tibet), and extending into India (via Sikkim, Nepal, and Bhutan).
- Sichuan Route: Connecting Chengdu (Sichuan) to Tibet and North India.
- Tea from southwestern China was transported to Tibet, then moved through the Himalayan passes to Kolkata and beyond, reaching Europe and Asia.
- The rise of modern roads and railways in the mid-20th century led to its gradual decline.
Historical Significance:
- Trade & Economy: Connected Tibet and China to India’s markets, facilitating the export of Chinese tea and Tibetan wool to Kolkata while Indian textiles and spices moved northward.
- Horses for Indian Cavalry: Tibetan horses, transported through the route, were crucial for Indian military campaigns, especially in the Mughal and British periods.
- Spread of Buddhism: The route enabled Buddhist scholars and monks to travel between Nalanda, Tibet, and China, promoting cultural and religious exchanges.
- Political & Diplomatic Relations: British India sought control over Sikkim and Tibet’s trade routes, leading to diplomatic interventions like the 1904 British expedition to Tibet.
- Impact on Himalayan Regions: Strengthened trade and cultural ties between Ladakh, Sikkim, Arunachal Pradesh, and Tibet, influencing their shared heritage and economy.
PYQ:
[2018] The China-Pakistan Economic Corridor (CPEC) is viewed as a cardinal subset of China’s larger ‘One Belt One Road’ initiative. Give a brief description of CPEC and enumerate the reasons why India has distanced itself from the same.
[2016] ‘Belt and Road Initiative’ is sometimes mentioned in the news in the context of the affairs of
(a) African Union
(b) Brazil
(c) European Union
(d) China |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Ultra-Conserved Elements (UCEs) in DNA
Why in the News?
Researchers have discovered a reason why certain segments of the human and mouse genomes (Tra2b gene) have remained unchanged for 80 million years. These segments, known as ultra-conserved elements (UCEs), play a vital role in regulating protein production
What are Ultra-Conserved Elements (UCEs) in DNA?
- Ultra-Conserved Elements (UCEs) are long, highly conserved DNA sequences (200+ base pairs) that have remained unchanged for millions of years across multiple species, including humans, mice, rats, chickens, and even fish.
- Key Characteristics:
- Found in both coding (gene) and non-coding (regulatory) regions of the genome.
- Do not tolerate mutations, meaning they remain identical across species for tens of millions of years.
- Many UCEs do not code for proteins but play crucial roles in gene regulation and cellular function.
-
- Evolutionary Significance: Their extreme conservation suggests they are essential for survival, as any mutation would likely be harmful.
- Gene Regulation: UCEs may function as enhancers or silencers, controlling when and where genes are activated.
- Developmental Roles: They are often linked to brain development, fertility, and immune response.
- Disease Prevention: UCEs may protect against genetic disorders and cancers by stabilizing gene expression.
Why do Human and Mouse Genomes overlap?
- Humans and mice share a common mammalian ancestor that lived around 80 million years ago.
- Genomic Similarity:
- Around 85% of mouse genes have direct counterparts in humans.
- Nearly 500 UCEs are identical between humans and mice, despite millions of years of evolution.
- Many fundamental processes like cell division, metabolism, and brain function are similar between species, necessitating high conservation of crucial DNA regions.
- Medical Research:
- Because of these similarities, mice serve as a model organism for studying human genetics, diseases, and drug responses.
- UCEs help scientists understand gene function across species, leading to insights into evolution and biomedical advancements.
PYQ:
[2013] Recombinant DNA technology (Genetic Engineering) allows genes to be transferred
1. across different species of plants
2. from animals to plants
3. from microorganisms to higher organisms
Select the correct answer using the codes given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3 |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: SPHEREx Telescope
Why in the News?
NASA is set to launch its latest space telescope, SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) aboard a SpaceX Falcon 9 rocket from California.
What is the SPHEREx Telescope?
- SPHEREx is a new space telescope developed by NASA.
- It is designed to map the entire sky in infrared light and provide insights into the origins of the universe, galaxy formation, and the distribution of life-forming molecules.
- Its mission is expected to last 2 years, during which it will survey the sky 4 times.
-
- Infrared Spectroscopy: Unlike traditional optical telescopes, SPHEREx will capture the universe in 102 infrared colors, which are invisible to the human eye.
- Wide-Sky Coverage: Unlike the James Webb Space Telescope (JWST), which focuses on narrow regions, SPHEREx will map the entire sky every 6 months.
- High Data Output: It will collect data on one billion galaxies, 100 million stars, and 10,000 asteroids, creating an unprecedented cosmic map.
- Study of Cosmic Inflation: SPHEREx will analyze the earliest moments after the Big Bang, helping scientists understand how the universe expanded rapidly in its infancy.
- Search for Life-Forming Molecules: The telescope will identify biogenic molecules like water, carbon dioxide, and methanol in the Milky Way galaxy, revealing where the building blocks of life exist.
How will SPHEREx Create the “Most Colourful” Map of the Cosmos?
- Spectroscopic Imaging: SPHEREx will divide light from celestial objects into 96 infrared bands, significantly more than previous sky-mapping telescopes.
- Mapping Galactic Evolution: By observing 450 million galaxies, SPHEREx will reveal how they evolved over cosmic history.
- Identifying Cosmic Ice: The telescope will detect frozen water and organic molecules in interstellar dust clouds, essential for understanding planetary formation.
- Unprecedented Infrared Insights: Unlike Hubble, which focuses on optical light, and JWST, which targets deep-space infrared observations, SPHEREx will capture broad infrared spectra across the entire sky, revealing hidden cosmic structures.
PYQ:
[2015] In the context of modern scientific research, consider the following statements about ‘IceCube’, a particle detector located at South Pole, which was recently in the news:
- It is the world’s largest neutrino detector, encompassing a cubic kilometre of ice.
- It is a powerful telescope to search for dark matter.
- It is buried deep in the ice.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3 |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Veer Savarkar
Why in the News?
Prime Minister paid tribute to Veer Savarkar on his death anniversary (26th February), acknowledging his contributions to India’s freedom movement.
About Veer Savarkar: Life, Contributions, and Legacy
|
Details |
| Who was Veer Savarkar? |
• Born on May 28, 1883, in Bhagur, Maharashtra.
• Founded Abhinav Bharat Society (1904) for armed resistance.
• Led India House in London (1906) and the Free India Society.
• Arrested in 1910, sentenced to life imprisonment in Cellular Jail (Kala Pani, Andaman & Nicobar Islands).
• Became President of the Hindu Mahasabha (1937-1943).
• Died on February 26, 1966, after fasting till death. |
| His Contributions |
• Advocated armed revolution against British rule.
• Coined Hindutva (1923), defining Indian identity beyond religion.
• Opposed Partition, emphasizing Hindu political unity.
• Championed military nationalism over passive resistance.
• Writings and ideology influenced Indian nationalist movements. |
| Literary Works |
• The First War of Indian Independence (1909): Reinterpreted the 1857 Revolt as a nationalist struggle.
• Hindutva: Who is a Hindu? (1923): Laid the ideological foundation of Hindutva.
• My Transportation for Life (1950): Memoirs of his imprisonment in Cellular Jail.
• Six Glorious Epochs of Indian History: Advocated Hindu resistance against foreign invaders. |
| Controversies |
• Gandhi Assassination Case (1948): Arrested but acquitted due to lack of evidence.
• Mercy Petitions (1911-1924): Wrote clemency petitions for early release from prison, debated as tactical or compromising.
• Opposition to Quit India Movement (1942): Rejected Gandhi’s call, favored military strength over civil disobedience.
• Hindutva Ideology: Critics claim it fostered religious divisions, while supporters see it as reviving Hindu identity. |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Cali Fund
Why in the News?
A new international biodiversity fund, the ‘Cali Fund’, was launched at the 16th Conference of Parties (COP16) to the United Nations Convention on Biological Diversity (CBD) in Rome.
What is the Cali Fund?
- The Cali Fund is an international biodiversity financing mechanism launched on February 25, 2025, at COP16 of the UN Convention on Biological Diversity (CBD) in Rome.
- It collects funds from private companies that utilize Digital Sequence Information (DSI) from nature in their businesses.
- The fund supports biodiversity conservation, scientific research, and indigenous communities.
Key Features of the Cali Fund:
- Funding Source: Businesses using genetic data (DSI) from plants, animals, and microorganisms will contribute financially.
- Utilization of Funds:
- 50% allocated to indigenous and local biodiversity projects.
- Supports scientific research and developing nations’ biodiversity action plans.
- Global Management: Managed by UNDP and UNEP, with MPTFO handling finances.
- Alignment with Global Goals: Supports Kunming-Montreal Global Biodiversity Framework (KMGBF) to reverse biodiversity loss by 2030.
- First-of-Its-Kind: Direct private sector contributions to a global UN biodiversity fund.
What is Digital Sequence Information (DSI)?
- DSI refers to genetic data extracted from plants, animals, and microorganisms.
- Used extensively in industries such as:
- Pharmaceuticals (medicine development).
- Cosmetics (natural ingredient research).
- Agriculture (crop improvement, pest resistance).
- Biotechnology (genetic engineering, bioinformatics).
|
About the Convention on Biological Diversity (CBD):
- The CBD, with 196 contracting parties, stands as the most comprehensive international agreement focused on nature conservation and the sustainable use of natural resources.
- It was opened for signing at the 1992 UN Conference on Environment and Development in Rio de Janeiro.
- The CBD has 3 main objectives:
- Conservation of biological diversity (including genetic, species, and habitat diversity).
- Sustainable use of biological diversity.
- Fair and equitable sharing of benefits arising from the use of genetic resources.
- It addresses biodiversity at all levels: ecosystems, species, and genetic resources.
- The Conference of the Parties (COP) is the CBD’s governing body, and it meets biennially to assess progress, set priorities, and develop action plans.
- The Secretariat of the CBD is located in Montreal, Canada.
- To further its goals, the CBD includes two binding protocols:
- The Cartagena Protocol (2000), which regulates the transboundary movement of living modified organisms (LMOs) and came into force in 2003.
- The Nagoya Protocol (2010), which provides a legal framework for the access to genetic resources and the fair sharing of benefits from their use.
PYQ:
[2014] With reference to ‘Global Environment Facility’, which of the following statements is/are correct?
(a) It serves as financial mechanism for ‘Convention on Biological Diversity’ and ‘United Nations Framework Convention on Climate Change’
(b) It undertakes scientific research on environmental issues at global level
(c) It is an agency under OECD to facilitate the transfer of technology and funds to underdeveloped countries with specific aim to protect their environment.
(d) Both A and B |
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From UPSC perspective, the following things are important :
Prelims level: Gharial
Why in the News?
Madhya Pradesh CM released 10 gharials into the Chambal River at the National Chambal Gharial Sanctuary in Morena.
About Gharial
- The gharial (Gavialis gangeticus) is a unique species of crocodilian, characterized by its long, slender snout, which is perfectly adapted for catching fish.
- The species derives its name from the “ghara”, a bulbous growth found on the snouts of adult males, which aids in vocalization and mating displays.
- It is a fish-eating crocodile native to the Indian subcontinent.
- They are a crucial indicator of clean river water.
Conservation Status:
- Recognizing the rapid decline in gharial populations, India launched captive breeding and release programs in the late 1970s.
- Between 1975 and 1982, the country established 16 captive breeding centers and 5 protected sanctuaries to ensure the survival of the species.
- Gharials are ‘Critically Endangered’ in the IUCN Red List of Species.
- The species is also listed under Schedule I of the Wildlife (Protection) Act, 1972.
- Today, gharials primarily survive in 5 major refuges:
- National Chambal Sanctuary (NCS) – The largest stronghold of gharials.
- Katerniaghat Wildlife Sanctuary in Uttar Pradesh.
- Chitwan National Park in Nepal.
- Son River Sanctuary in Madhya Pradesh.
- Satkosia Gorge Sanctuary in Odisha.
PYQ:
[2013] Consider the following fauna of India:
1. Gharial
2. Leatherback turtle
3. Swamp deer
Which of the above is/are endangered?
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Black Plastic
Why in the News?
A recent study suggested that black plastic contains harmful flame retardants, which may leach into food at hazardous levels.
What is Black Plastic?
- Black plastic is often made from recycled electronic waste like old computers, TVs, and appliances.
- These electronics contain flame retardants (such as bromine-based compounds), heavy metals (lead, cadmium, mercury), and other hazardous chemicals.
- Flame retardants are added to prevent fire hazards, but they can persist in recycled plastics.
- Many of these chemicals are now banned in several countries due to their toxicity.
- However, legacy plastics containing these substances continue to enter the recycling stream, leading to contamination of household products.
Threats Posed by Black Plastic:
- Contains Toxic Chemicals: Made from recycled e-waste, it may have flame retardants, heavy metals, and antimony.
- Food Contamination: Heat and acidic foods can leach harmful chemicals into meals.
- Environmental Impact: Difficult to recycle, it pollutes landfills and groundwater.
- Health Risks: Linked to hormonal issues, neurological damage, and cancer.
PYQ:
[2019] Why is there a great concern about the ‘microbeads’ that are released into environment?
(a) They are considered harmful to marine ecosystems.
(b) They are considered to cause skin cancer in children.
(c) They are small enough to be absorbed by crop plants in irrigated fields.
(d) They are often found to be used as food adulterants. |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Quantum Gravity
Why in the News?
A new proposal published on October 29, 2024, suggests an experiment that could provide direct evidence for quantum gravity, unifying general relativity and quantum mechanics. A new experiment proposes testing weak gravitational fields at the quantum level, a historic breakthrough in physics if successful.
What is Quantum Gravity?
- Quantum Gravity is a theoretical framework that aims to unify general relativity (which explains gravity at large scales) and quantum mechanics (which governs subatomic particles).
- Since gravity behaves differently from the other fundamental forces in quantum mechanics, physicists have been searching for a theory that integrates gravity into the quantum world.
- General relativity treats gravity as the curvature of spacetime, while quantum mechanics describes forces through particle interactions.
- Gravity has never been directly observed in quantum form, unlike the other fundamental forces.
- Theories like String Theory and Loop Quantum Gravity attempt to explain quantum gravity but lack experimental validation.
Significance of the Experiment
- First Realistic Test for Quantum Gravity: Most quantum gravity theories rely on extreme conditions (e.g., black holes), making them impossible to test. This experiment provides a lab-based alternative.
- Testing Gravity at the Quantum Level: If a small mass in quantum superposition is influenced by gravity, it could prove gravity itself is quantum in nature.
- Weak Gravity Instead of Strong Gravity: Unlike previous studies focused on black holes, this experiment explores weak gravitational interactions, making it more feasible.
- Towards a Unified Theory of Physics: Proving quantum gravity could merge general relativity and quantum mechanics, solving a major gap in modern physics.
- Challenging Existing Theories: If results differ from both classical and quantum predictions, it could suggest a new force or a modified gravity theory.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Battle of Karnal
Why in the News?
On February 24, 1739, the Battle of Karnal marked a turning point in the history of Mughal empire.
About Battle of Karnal
- The Battle of Karnal on February 24, 1739, saw Nadir Shah’s Persian army defeat Mughal Emperor Muhammad Shah ‘Rangila’ in under three hours.
- Despite having 300,000 soldiers, the Mughal army was crushed by Nadir Shah’s 55,000 well-trained troops using modern tactics and superior firearms.
- Following the victory, Delhi was sacked, 30,000 civilians massacred, and the Mughal treasury looted, including the Koh-i-Noor diamond and the Peacock Throne.
Impact on Mughal Decline
- Economic Collapse: The Mughal treasury was emptied, crippling military and administrative strength.
- Weakening Central Power: Governors of Bengal, Awadh, and Hyderabad declared independence.
- Military Decline: The Mughal army’s outdated tactics were exposed; future invasions (e.g., Ahmad Shah Abdali, 1748-1761) followed.
- Rise of Regional Powers: The Marathas expanded, eventually capturing Delhi (1771); the Sikhs grew in Punjab.
- British Expansion: The East India Company took advantage, leading to British rule after 1857.
PYQ:
[2019] With reference to Mughal India, what is/are the difference/differences between Jagirdars and Zamindar?
1. Jagirdars were holders of land assignments in lieu of judicial and police duties, whereas Zamindars were holders of revenue rights without obligation to perform any duty other than revenue collection.
2. Land assignments to Jagirdars were hereditary and revenue rights of Zamindars were not hereditary.
Select the correct answer using the codes given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2 |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: 'Quality of Public Expenditure' Index
Why in the News?
The Quality of Public Expenditure (QPE) Index, developed by the RBI, evaluates how efficiently government funds are used, focusing on expenditure composition and its long-term impact on economic growth.
About the QPE Index
- The QPE Index by the Reserve Bank of India (RBI) measures how effectively government funds are utilized.
- It focuses on fiscal discipline, capital investment, and efficient allocation of public resources for long-term growth.
- Key Indicators of the QPE Index:
- Capital Outlay to GDP Ratio: Measures government spending on infrastructure as a percentage of GDP. Higher ratio = better quality expenditure.
- Revenue Expenditure to Capital Outlay Ratio: Lower ratio preferred, as excessive spending on salaries & subsidies reduces funds for development.
- Development Expenditure to GDP Ratio: Tracks spending in education, healthcare, infrastructure, improving human capital & productivity.
- Development Expenditure as % of Total Expenditure: Higher share indicates better resource allocation.
- Interest Payments to Total Expenditure Ratio: Lower ratio = better debt management & fiscal sustainability.
Key Findings from RBI’s QPE Index Analysis:
- 1991-2003: Post-liberalization, focus on reducing fiscal deficit led to a decline in public investment.
- 2003-2008: FRBM Act (2003) improved fiscal discipline, increasing capital spending & state revenues.
- 2008-2013: Global Financial Crisis (GFC) led to higher government spending, increasing fiscal deficits but supporting recovery.
- 2013-2017: 14th Finance Commission (2015) increased states’ share in central taxes, boosting development expenditure.
- 2017-2020: GST implementation challenges affected the Centre’s revenues, but states benefited from higher tax shares.
- 2020-Present: Record capital expenditure boosted infrastructure & economic recovery, improving public expenditure quality.
PYQ:
[2014] With reference to Union Budget, which of the following, is/are covered under Non-Plan Expenditure?
1. Defence-expenditure
2. Interest payments
3. Salaries and pensions
4. Subsidies
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1, 2, 3 and 4
(d) None |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Rupee-Dollar Swap Auction
Why in the News?
The Reserve Bank of India (RBI) will conduct a $10 billion dollar-rupee swap auction on February 28, 2025, aimed at injecting durable rupee liquidity into the banking system.
This 3-year forex swap is expected to inject ₹86,000 crore into the banking system at a time when there is a liquidity deficit of ₹1.7 lakh crore in the financial sector.
What is the RBI’s Forex Swap Auction?
- Forex swap auctions are a tool used by the RBI to manage liquidity and stabilize financial markets.
- In return, the RBI will inject rupee liquidity into the banking system.
- Buy-Sell Swap: RBI buys dollars now and sells them back later (liquidity injection).
- Sell-Buy Swap: RBI sells dollars now and buys them back later (liquidity absorption).
- After 3 years, the transaction will be reversed, with the RBI selling dollars back to banks and absorbing rupee liquidity from the system.
How does it work?
- Auction Process:
- Banks bid in the swap auction by quoting the swap rate (forward premium).
- The lowest premium bids are accepted first (similar to G-sec auctions).
- Liquidity Injection:
- Banks sell US dollars to the RBI at the prevailing exchange rate.
- The RBI provides rupees in exchange, boosting liquidity in the banking system.
- Reverse Swap After Three Years:
- On March 6, 2028, the swap will be reversed.
- The RBI will return US dollars to the banks and absorb the equivalent amount of rupees.
- This allows the RBI to control liquidity over a longer period without permanently altering its forex reserves.
Significance of this move
- Reduces Borrowing Costs: More liquidity in the system lowers short-term interest rates. Bond yields and corporate borrowing costs decline, benefiting businesses and NBFCs.
- Stabilizes Foreign Exchange Markets: The rupee’s availability increases, reducing pressure on exchange rates. Lower hedging costs for companies with foreign liabilities.
- Enhances RBI’s Monetary Policy Toolkit: This approach provides a temporary boost to liquidity, while ensuring a controlled reversal in the future.
PYQ:
[2015] Convertibility of rupee implies:
(a) Being able to convert rupee notes into gold
(b) Allowing the value of rupee to be fixed by market forces
(c) Freely permitting the conversion of rupee to other currencies and vice versa
(d) Developing an international market for currencies in India |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: BOBP-IGO
Why in the News?
India has taken over the Chairmanship of the Bay of Bengal (BOB) Inter-Governmental Organisation from Bangladesh at the 13th Governing Council Meeting in Male, Maldives.
What is BOBP-IGO?
- BOBP-IGO is a regional fisheries body promoting sustainable fisheries management and improving the livelihoods of small-scale fishers in the Bay of Bengal region.
- It was established in 2003 and is headquartered in Chennai.
- It evolved from the Bay of Bengal Programme (BoBP), which was launched in 1979 under the Food and Agriculture Organization (FAO) of the United Nations.
- Members:
- Full Members: Bangladesh, India, Maldives, Sri Lanka.
- Cooperating Non-Contracting Parties: Indonesia, Malaysia, Myanmar, Thailand.
- Objectives: Enhance marine fisheries management, build fisher capacities, promote policy cooperation, and combat Illegal, Unreported & Unregulated (IUU) fishing.
Significance of India’s Chairmanship in BOBP-IGO
- India will lead policies for sustainable fisheries management and marine conservation across member nations.
- This would strengthen monitoring, surveillance, and enforcement to prevent overfishing and illegal activities.
- It will facilitate collaboration among member nations, exchange best practices, and integrate advanced technology in fisheries.
- It would promote scientific research, innovation, and economic growth while reinforcing India’s influence in the Indian Ocean Region.
PYQ:
[2022] Do you think that BIMSTEC is a parallel organisation like the SAARC? What are the similarities and dissimilarities between the two? How are Indian foreign policy objectives realized by forming this new organisation? |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Jhumur Dance
Why in the News?
Prime Minister witnessed the largest-ever Jhumur dance performance in Guwahati, to commemorate the 200th anniversary of Assam’s tea industry.
What are Tea Tribes/Tea Garden Communities of Assam?
- The Tea Tribes or Tea Garden Communities of Assam are descendants of laborers brought by the British in the 19th century to work in tea plantations.
- These workers were mainly from Jharkhand, Odisha, Chhattisgarh, West Bengal, and Andhra Pradesh.
- Many were brought through forced migration, and even voluntary migration occurred under exploitative conditions.
- They were subjected to poor wages, inhumane working conditions, and restricted mobility.
- The community is concentrated in Upper Assam districts like Tinsukia, Dibrugarh, Golaghat, Sonitpur, and Sivasagar, and in the Barak Valley.
- They currently have Other Backward Classes (OBC) Status but demand Scheduled Tribe (ST) status, as many of their sub-groups, like Munda, Santhal, and Oraon, hold ST status in their original states.
- Despite adversity, the Tea Garden Communities preserved their cultural identity, with distinct festivals, music, and dance forms.
- Their major festivals include Tushu Puja and Karam Puja, celebrated with the traditional Jhumur dance.
About Jhumur Dance
- Jhumur (also spelled Jhumoir or Jhumair) is a folk dance of the Sadan ethnolinguistic group, mainly practised by Assam’s Tea Garden Communities.
- It originated in Chotanagpur Plateau (Jharkhand, Odisha, Bengal, and Chhattisgarh) and was brought to Assam during the British colonial era.
- Over time, it blended with Assamese culture, incorporating Assamese musical and linguistic influences.
- Performance and Style:
- Women are the primary dancers, standing shoulder-to-shoulder in synchronized formations.
- Men accompany them with traditional instruments like madal, dhol, dhak (drums), cymbals, flutes, and shehnai.
- Attire: Women wear red and white sarees, while men wear kurta-dhoti with gamocha (traditional Assamese cloth).
- Jhumur songs depict both celebration and hardship, narrating:
- Love and Nature – Seasonal changes, harvest, and romance.
- Hardships of Tea Workers – Struggles, migration, and exploitation.
- Festivals and Community Life – Unity, faith, and social cohesion.
- It serves as a cultural bridge, helping retain their traditions and forge a unique identity in Assam.
PYQ:
[2021] With reference to India, the terms ‘Halbi, Ho and Kui’ pertain to:
(a) Dance forms of Northwest India
(b) Musical instruments
(c) Pre-historic cave paintings
(d) Tribal languages |
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Pagri Sambhal Jatta Movement
Why in the News?
On February 23, 2025, farmers protesting at the Punjab and Haryana borders are observing Pagri Sambhal Diwas in honor of Ajit Singh, a freedom fighter, revolutionary, and Bhagat Singh’s paternal uncle.
About the Pagri Sambhal Jatta Movement (1907)
- The Pagri Sambhal Jatta movement was a peasant uprising in Punjab against the oppressive British land laws that exploited farmers.
- The movement was led by Ajit Singh, Kishan Singh (Bhagat Singh’s father), and Lala Lajpat Rai, who mobilized farmers to resist these unfair policies.
- Farmers protested against three major British laws:
- Punjab Land Alienation Act, 1900 – Restricted farmers from selling or mortgaging their land, favoring landlords and moneylenders.
- Punjab Land Colonisation Act, 1906 – Allowed the British to take control of farmers’ land after their death instead of passing it to their heirs.
- Doab Bari Act, 1907 – Deprived farmers of ownership rights and reduced them to contract workers.
- The British also raised taxes on agricultural land and irrigation, making it harder for farmers to sustain themselves.
- The slogan “Pagri Sambhal Jatta“, meaning “Take care of your turban, O farmer,” was coined by Banke Dayal, a nationalist poet, and became a symbol of self-respect and protest.
- The movement resulted in mass protests and acts of civil disobedience, forcing the British to roll back some clauses of these laws.
- Ajit Singh and Lala Lajpat Rai were arrested in May 1907 and exiled to Burma. Due to public pressure, they were released in November 1907.
- Fearing further persecution, Ajit Singh fled to Persia and later lived in Turkey, Brazil, Germany, and Italy, where he worked with other revolutionaries against British rule.
- The movement became a landmark in India’s freedom struggle, inspiring future farmers’ agitations, the Ghadar Movement, and Bhagat Singh’s revolutionary activities.
Who was Ajit Singh?
- Ajit Singh was a freedom fighter, revolutionary, and nationalist leader who played a crucial role in India’s independence movement.
- He was born on February 23, 1881, in Khatkar Kalan, Punjab, which is now part of Shaheed Bhagat Singh Nagar district.
- He was the elder brother of Kishan Singh, the father of Bhagat Singh, and played a key role in shaping Bhagat Singh’s revolutionary ideals.
- Ajit Singh co-founded the Bharat Mata Society, an organization that aimed to unite farmers and revolutionaries against British exploitation.
- Due to his active role in the Pagri Sambhal Jatta movement, he became a prime target of British authorities and was forced into exile for 38 years (1909-1947).
- He lived in Persia, Turkey, Brazil, Germany, and Italy, where he continued his revolutionary activities and worked with Lala Hardayal and Madame Cama.
- In March 1947, Ajit Singh returned to India, just a few months before India gained independence.
- However, due to prolonged illness, he passed away on August 15, 1947, the very day India became independent.
- Since 2021, February 23 has been observed as Pagri Sambhal Diwas, honoring Ajit Singh’s contributions to India’s independence and farmers’ rights.
|
PYQ:
[2010] What was the immediate cause for the launch of the Swadeshi movement?
(a) The partition of Bengal done by Lord Curzon.
(b) A sentence of 18 months rigorous imprisonment imposed on Lokmanya Tilak.
(c) The arrest and deportation of Lala Lajpat Rai and Ajit Singh; and passing of the Punjab Colonization Bill.
(d) Death sentence pronounced on the Chapekar brothers. |
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