Note4Students
From UPSC perspective, the following things are important :
Prelims level: Diyodar Meteorite
Mains level: Not Much

Central idea: A rare and unique meteorite, known as the Diyodar meteorite, was discovered in Banaskantha, Gujarat in December 2022. It is significant because it is the first aubrite to be found in India in 170 years.
What are Aubrites?
- Aubrites are a type of meteorite that are believed to have formed on a different planet in the early solar system.
- They are known for their unusual mineralogy and composition and are believed to have originated from a differentiated parent body, such as an asteroid or a planetesimal.
- They are primarily composed of a mineral called enstatite, which is a magnesium-rich silicate. They also contain other minerals such as nickel-iron, troilite, and chromite.
- Aubrites are relatively rare, comprising only about 0.1% of all known meteorites.
- They are believed to have formed under highly reducing conditions, with very little oxygen present.
Meteorite found in Diyodar, Gujarat
- The Diyodar meteorite is thought to be around 4.5 billion years old, and it is believed to have originated from the asteroid belt between Mars and Jupiter.
- Its discovery provides scientists with an opportunity to study the composition and structure of these unique meteorites.
- This, in turn, can help researchers to better understand the early solar system and the processes that led to the formation of planets.
Its composition
- Around 90% of the meteorite was composed of orthopyroxene.
- Pyroxenes are silicates consisting of single chains of silica tetrahedra (SiO 4); orthopyroxenes are pyroxenes with a certain structure.
- Pyroxenes such as diopside and jadeite have been used as gems. Spodumene was historically used as lithium ore.
- Rocks with pyroxene have also been used to make a crushed stone that is used in construction.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Constitutional position of Mayor
Mains level: Not Much
Central idea: The Supreme Court ordered the Lieutenant Governor of Delhi to notify the first meeting of the Municipal Corporation of Delhi to elect a Mayor within 24 hours and held that nominated members cannot vote in these polls.
What is the issue?
- The issue at hand is whether the nominated members of the Municipal Corporation of Delhi should be allowed to vote in the mayoral polls.
- A Party had challenged the eligibility of the nominated members to vote, arguing that they were appointed by the Delhi government and were therefore not neutral.
- The Supreme Court of India has now ruled that the nominated members cannot vote in the mayoral polls.
What has the Supreme Court ruled?
- The Bench did not agree with the L-Gâs contention that nominated members could vote in the first meeting.
- The court pointed out that Article 243R of the Constitution did not distinguish between the first and regular meetings.
Who is a Mayor?
- In India, the mayor is the head of a municipal corporation, which is responsible for providing essential services and infrastructure to the residents of a city or town.
- The mayor is usually elected by the members of the municipal corporation or council, and serves as the ceremonial head of the local government.
History of Mayorâs elections in India
- Municipal corporation mechanisms in India was introduced during British Rule with formation of municipal corporation in Madras (Chennai) in 1688, later followed by municipal corporations in Bombay (Mumbai) and Calcutta (Kolkata) by 1762.
- However the process of introduction for an elected President in the municipalities was made in Lord Mayo’s Resolution of 1870.
- Since then the current form and structure of municipal bodies followed is similar to Lord Ripon’s Resolution adopted in 1882 on local self-governance.
- The 74th Constitutional Amendment Act of 1992 was introduced providing for the transfer of 18 different powers to urban local bodies, including the election of a mayor and to recognise them which included Municipal Corporations, Nagar Panchayats, and Municipal Councils.
Elections and tenure
- The method of electing mayor and their tenure varies for each city in India.
- In Bengaluru (Karnataka) the election process is indirect with a tenure being for one year, in Mumbai (Maharashtra) it follows indirect elections with tenure for 2.5 years and Bhopal (Madhya Pradesh) follows a directly elected mayor with a term for 5 years.
Roles and Responsibilities
- Governs the local civic body.
- Fixed tenure varying in different towns.
- First citizen of city.
- Has two varied roles â Representation and upholding of the dignity of the city during ceremonial times and a presiding over discussions of the civic house with elected representatives in functional capacity.
- The Mayor’s role is confined to the corporation hall of presiding authority at various meetings relating to corporation.
- The Mayor’s role extends much beyond the local city and country as the presiding authority at corporation meetings during visits of a foreign dignitary to the city as he is invited by the state government to receive and represent the citizens to the guest of honour.
- At government, civic and other social functions he is given prominence.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Pangolin
Mains level: Wildlife trade

The World Pangolin Day was observed on February 18.
Why in news?
- A not-for-profit organization working on the international trade of animals and plants, has brought out a fact sheet reporting that 1,203 pangolins have been found in illegal wildlife trade in India from 2018 to 2022.
Pangolins
IUCN status: Endangered
- India is home to two species of pangolin.
- While the Chinese Pangolin (Manis pentadactyla) is found in northeastern India, the Indian Pangolin is distributed in other parts of the country as well as Sri Lanka, Bangladesh and Pakistan.
- Both these species are protected and are listed under the Schedule I Part I of the Wild Life (Protection) Act, 1972 and under Appendix I of the Convention on International Trade in Endangered Species (CITES).
- Commonly known as âscaly anteatersâ, the toothless animals are unique, a result of millions of years of evolution.
- Pangolins evolved scales as a means of protection. When threatened by big carnivores like lions or tigers they usually curl into a ball.
- The scales defend them against dental attacks from the predators.
Why protect Pangolins?
- Pangolins are currently the most trafficked wildlife species in the world.
- These Scales has now become the main cause of the pangolinâs disappearance.
- The scales are in high demand in China, where they are used in traditional Chinese medicine.
- Pangolin meat is also in high demand in China and Southeast Asia.
- Consequently, pangolins have seen a rapid reduction in population globally. The projected population declines range from 50 per cent to 80 per cent across the genus.
Try this PYQ:
Consider the following animals:
- Hedgehog
- Marmot
- Pangolin
To reduce the chance of being captured by predators which of the above organisms rolls up/roll up and protects/protect its/their vulnerable parts?
(a) 1 and 2
(b) 2 only
(c) 3 only
(d) 1 and 3
Post your answers here.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: GST, GST COuncil
Mains level: Not Much

Central idea: The article discusses the possibility of the government presenting the reverse charging of Goods and Services Tax (GST) on Steel and other metal scraps before the GST council.
Scrap recycling in India
- India is now the world’s second-largest steel producer, with output expected to increase by 17.8 per cent to 118.1 million tonnes in 2021.
- In contrast to countries that take pride in using increasing amounts of steel scrap to produce ferrous metal and thus reduce carbon dioxide (CO2) emissions, India only uses about 30 MT of scrap per year.
- India is still in its early stages, with low recycling awareness. Unfortunately, only 30 per cent of India’s recyclable scrap is recycled.
What is Reverse Charging of GST?
- Reverse charging of Goods and Services Tax (GST) is a mechanism in which the liability to pay the tax is shifted from the supplier to the recipient of goods or services.
- Under normal circumstances, it is the supplier who is liable to pay GST to the government.
- However, in cases of reverse charging, the recipient of the goods or services becomes liable to pay the tax instead of the supplier.
- Reverse charging is usually implemented in situations where the supplier is not registered under GST or has failed to deposit the GST dues with the government.
- Reverse charging is a way for the government to ensure that the GST liability is fulfilled even if the supplier does not fulfill its obligations.
Some examples of goods and services on which reverse charging is already applied are:
- Services provided by a goods transport agency
- Services provided by an advocate to a business entity
- Supply of manpower for any purpose
- Renting of a motor vehicle provided by any individual or HUF to a business entity
- Supply of specified goods like gold, silver, or precious stones by an unregistered supplier to a registered person.
Why scrap industry?
- The scrap industry in India is a largely unorganized sector, and many small players operate without proper registration or compliance.
- This has led to tax evasion and revenue losses for the government.
- Reverse charging on the scrap industry is aimed at plugging this gap and ensuring that the GST liability is fulfilled even if the supplier (in this case, the scrap dealer) is not registered or fails to deposit the GST dues with the government.
Consequences of the move
- Compliance Costs: The implementation of reverse charging on the scrap industry may increase compliance costs for stakeholders. Small players in the industry may find it challenging to comply with the new regulations, leading to increased compliance costs.
- Administrative Burden: The scrap industry in India is largely an unorganized sector, and the application of reverse charging may impose an administrative burden on stakeholders. Many small players may not have the necessary infrastructure or resources to comply with the new regulations.
- Cash flow impact: Reverse charging could impact the cash flow of small businesses, as they would have to pay GST upfront and then claim it back through input tax credit. This could lead to a shortage of working capital for small businesses.
- Increased Paperwork: The application of reverse charging on the scrap industry may lead to an increase in paperwork and documentation for stakeholders. This could be challenging for small players who may not have the resources to handle the additional paperwork.
- Implementation Challenges: The implementation of reverse charging on the scrap industry could be challenging, given that the sector is largely unorganized. It could be challenging to track unregistered players, and the government may face difficulties in enforcing the new regulations.
Woes of Scrap Industry in India
- Lack of infrastructure: The scrap industry in India is primarily an unorganized sector, with limited access to infrastructure such as proper storage facilities, transport, and handling equipment. This can limit the efficiency and productivity of the sector.
- Low productivity: The scrap industry in India faces low productivity due to the use of outdated technology and inadequate skills among workers. This can limit the competitiveness of the industry and its ability to meet the demand for scrap.
- Inadequate regulatory support: The scrap industry in India lacks adequate regulatory support, which can result in a lack of standardization and transparency in the sector. This can lead to issues such as underreporting of sales, tax evasion, and other malpractices.
Stakeholder response
- The scrap industry has expressed concerns over the potential increase in compliance costs and administrative burden that may arise from the implementation of reverse charging.
- This might affect the recycle economy.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Tipu Sultan
Mains level: His legacy

Central idea: The article examines the controversial nature of Tipu Sultan’s legacy and the differing opinions about his reign and his place in Indian history. It discusses the contrasting views of Tipu Sultan as a hero and patriot who fought against British colonialism, or as a tyrant who persecuted Hindus and Christians.
Rise of Tipu Sultan
- Tipu Sultan was born on November 10, 1750, in Devanahalli, present-day Bangalore.
- His father was Hyder Ali, who rose through the ranks of the army of the Wodeyars, the Hindu rulers of Mysore.
Rise to power
- Hyder Ali seized power from the Wodeyars in 1761 and ruled for 20 years, a period in which the kingdom of Mysore had slowly expanded by capturing disputed areas at its borders.
- During this time, Tipu was educated in both matters of statecraft and warcraft, participating in his first battle at the age of only 15.
- When Hyder Ali died in 1782, Tipuâs primary motivation was to consolidate the territory he had inherited from his father.
- Specifically, the rebellious provinces of Malabar, Kodagu, and Bednur, were crucial to Mysoreâs strategic and economic interests.
- His rule in these areas is what is often cited as proof of his bigotry and authoritarianism.
Contribution to freedom struggle
- In the course of Indiaâs freedom struggle, Tipu Sultan became a symbol of resistance against British rule.
- His death while defending his fortress of Srirangaptna against British armies in 1799 was valorised as the ultimate sacrifice for the motherland.
Reforms carried out by Tipu
Administrative reforms
- Tipu Sultan also pioneered administrative and economic reforms.
- He introduced new coins, started a new land revenue system in Mysore, as well as introduced sericulture or silkworm cultivation, which continues to employ many Kannadigas to date.
- Furthermore, some claim that upon hearing of the plight of lower caste women who were not allowed to wear blouses, Tipu personally supplied them with cloth.
Modernization of weaponry: Advent of Rockets

- Tipu is credited for the introduction of iron-cased rockets in warfare.
- While rocket-like weapons had previously been used in War, Tipuâs army used what can be termed as the first modern war rockets in the Anglo-Mysore Wars.
- These rockets were used to devastating effects against much larger British armies, driving them to panic and disarray.
- The British used Tipuâs models for their own rockets, which would go on to play an important role in the Napoleonic Wars.
Scientific temper

- Tipuâs fascination with European culture was a result of what he saw while fighting Europeans.
- Tipu wanted Mysore to be a modern rival of the European powers and made investments in technology accordingly.
Why is Tipu branded as a tyrant?
- Warfare in Tipuâs time was brutal and those who rebelled were dealt with an iron fist. It was common practice to set strong examples to forestall future opposition.
- The punishments Tipu applied to rebels or conspirators included forced conversion and the transfer of people from their home territories to Mysore.
- The forced removals occurred from both Kodagu and Malabar, the former as a response to continued resistance against Mysore ruleâ as a result of their resistance and perceived treachery in the Anglo-Mysore Wars.
- The rightâs narrative of Tipuâs bigotry emphasizes Tipuâs militarism as well as his perceived attacks on âHinduâ rulers and subjects.
Historianâs justification of Tipuâs actions
- Tipuâs actions are questionable by todayâs standards, they were commonplace in the 18th century among rulers of all faiths.
- He was a tyrant, but his motivations were not necessarily religious zealotry.
- Rather, he was a pragmatist who ruled within the accepted conventions of kingship and warfare at the time.
- He undoubtedly ordered forced conversions in areas he annexed, Tipu also patronized various temples and Hindu shrines, including the Sri Ranganatha temple at Srirangapatna and the Math in Sringeri.
- Both these actions were to solidify his position as a ruler â the former to crush dissidents and the latter to gain legitimacy among his largely Hindu subjects.
Tipuâs legacy: looking at the past from the prism of the present
- Today, there has been an increased spotlight on his autocratic tendencies and brutal repression in annexed territories, with an increased emphasis on his religion.
- Both portrayals fall short, missing the complexity of Tipuâs character and material circumstances.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Mehrauli
Mains level: History of Delhi

The Delhi Development Authority (DDA) carried out an anti-encroachment drive in the nearby villages of Mehrauli and Ladha Sarai leaving hundreds of families in uncertainty about their future.
History of Delhi
- Purani Dilli, commonly referred to as Old Delhi, is a misnomer as the city’s history dates back to before the establishment of Shahjahanabad.
- The oldest evidence of habitation in Delhi, dating back to the Iron Age (around 1100-800 BC), is the painted grey ware fragments found in Purana Quila.
- Historians recognize seven cities of Delhi, from the 11th century onwards, namely Lalkot/Quila Rai Pithora/Mehrauli, Siri, Tughlaqabad, Firozabad, Shergarh (Old Fort), Shahjahanabad, and New Delhi.
- However, depending on what is considered a city, this number can be as high as 11.
In focus: City of Mehrauli
- Mehrauli is widely considered to be the oldest âcityâ of Delhi and is the oldest area of the metropolis to be continuously inhabited.
- It was first built by a ruler called Anangpal II in the 11th century, and it was called Lalkot.
- Later, it was known as ‘Quila Rai Pithora’ and was fortified by the Chauhans.
- The Mamluk dynasty took control of the city in 1192, and Qutubudin Aibak, the first ruler of the dynasty, built the Qutub Minar and the Quwwat-al-Islam mosque (oldest mosque in North India).
- In the following century, more buildings like tombs, step wells, palaces, and fortifications were constructed during the reigns of Iltutmish, Razia Sultan, and Alauddin Khilji.
Continued relevance and inhabitation
- Even as the newer cities came up and the seat of power shifted northwards, Mehrauli witnessed building activity as late as the Mughal and British periods.
- Due to its location on the lap of the Aravallis hills, the area was preferred as a summer retreat.
- Two Mughal summer palaces (Zafar Mahal and Jahaz Mahal) and a summer abode of Sir Thomas Metcalfe (Dilkhusha) are situated here.
- Mehrauli lay on a historic trade route, as the number of sarais (Ladho Sarai, Ber Sarai, Neb Sarai) around the area would suggest. A sarai was a resthouse for weary travellers.
Cultural significance of Mehrauli
- Mehrauli is also a spiritual centre. Sufi saint Hazrat Qutubuddin Bakhtiar Kaki (1173 -1235 AD) was buried in the city and his dargah remains popular till date, across religious lines.
- Some historians cite the dargah as a reason for the city surviving the test of time â despite power shifting elsewhere, the dargah remained a revered destination for pilgrims far and wide.
- Another spiritual centre for the community is the Yogmaya mandir, believed to be one of the oldest in the city.
- Yoginis (semi-divine deities) have been an integral part of Indian folklore and this temple dedicated to them is believed to have been constructed by the Pandavas.
How it ended up in encroachments?
- Like much of the rest of Delhi, the Partition brought many changes to Mehrauli too.
- Many refugees from the West found sanctuary here. The city has also seen sectarian tensions.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Thwaites Glacier
Mains level: Sea Level rise

The new research suggests that even low amounts of melting can potentially push Thwaites glacier further along the path toward eventual disappearance.
Thwaites Glacier
- Called the Thwaites Glacier, it is 120 km wide at its broadest, fast-moving, and melting fast over the years.
- Because of its size (1.9 lakh square km), it contains enough water to raise the world sea level by more than half a meter.
- Studies have found the amount of ice flowing out of it has nearly doubled over the past 30 years.
- Thwaitesâs melting already contributes 4% to global sea-level rise each year. It is estimated that it would collapse into the sea in 200-900 years.
- Thwaites is important for Antarctica as it slows the ice behind it from freely flowing into the ocean. Because of the risk it faces â and poses â Thwaites is often called the Doomsday Glacier.
How is Thwaites glacier melting?

- Thwaites Glacier is melting due to a combination of warming ocean currents and a weakening of the ice shelf that acts as a barrier between the glacier and the ocean.
- The cause of the melting is thought to be the influx of relatively warm bottom water drawn in from the wider ocean.
- In the 1990s it was losing just over 10 billion tonnes of ice a year. Today, it’s more like 80 billion tonnes.
Why is this glacier so important?
- Huge size: Flowing off the west of the Antarctic continent, Thwaites is almost as big as Great Britain. Â It is one of the largest and most important glaciers in Antarctica, as it acts as a gateway to a vast area of the continent.
- Melting faster: It’s a majestic sight, with its buoyant front, or “ice shelf”, pushing far out to sea and kicking off huge icebergs. But satellite monitoring indicates this glacier is melting at an accelerating rate.
- Seal level rise: Thwaites’ ice loss contributes approximately 4% to the annual rise in global sea-levels, with the potential to add 65cm in total should the whole glacier collapse. Â Its melting could also destabilize the entire West Antarctic Ice Sheet, leading to a further rise in sea levels.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Roche Limit, Quaoar, Dwarf Planets
Mains level: Not Much

Central idea: A new study shows that a dwarf planet, named Quaoar, has a ring system that exists within its Roche limit.
What is the news?
- Astronomers have found a ring around a dwarf planet, located in the Kuiper Belt at the solar systemâs edge, called Quaoar, according to a new study.
- The ring, however, is positioned much further away from the planet than is usual and defies theoretical explanations.
About Quaoar
- With an estimated radius of 555 km, Quaoar is roughly half the size of Pluto and orbits beyond Neptune.
- It also has a moon of its own, which is known as Weywot.
- As the dwarf planet is too small and too distant to be observed directly, the researchers detected the ring with the help of a phenomenon called stellar occultation.
How was the ring discovered?
- A stellar occultation occurs when, as seen from Earth, a bright star passes behind a planet.
- This allows astronomers or anybody on Earth to observe the sharp silhouette of the planet for a brief period of time.
- The phenomenon, which rarely occurs, is used by researchers to analyze a planetâs atmosphere and determine if it has a ring around it â in 1977, scientists discovered the Uranian ring system with the help of stellar occultation.
What is the Roche limit?
- The most intriguing part of the findings is the distance between Quaoar and its ring.
- Located 2,500 miles away from the dwarf planet, the ring is around 1,400 miles further away from the Roche limit, as per the calculations of the scientists.
- It suggests that at such a distance, the particles of the ring should have come together to form a moon.
- For a further understanding of the Roche limit, letâs look at the Earth and the moon. The Earthâs gravity pulls on the moon.
- However, one side of the moon is closer to the planet and hence, the pull is stronger on the side facing the Earth.
- The result is the so-called tidal force, which either stretches or compresses the moon from all sides.
What is the reason behind Quaoarâs far-out ring?
- As of now, nobody exactly knows how Quaoarâs ring has managed to remain stable at such a distance from the Roche limit.
- The researchers said that there can be a variety of possible explanations but they arenât sure about any one of them.
- It might be possible that Quaoarâs moon, Weywot, or some other unseen moon contributes gravity that somehow holds the ring stable.
- Another potential explanation can be that the particles of the ring are colliding with each other in such a way that they are avoiding to coalesce into a moon.
Try this MCQ:
Q.What is the Roche limit?
A) The distance from a planet where its gravity is balanced by the gravitational force of another celestial body
B) The minimum distance from a planet that a moon can orbit without being pulled apart by tidal forces
C) The distance from the sun at which a planet can have a stable orbit
D) The distance from the earth where meteoroids burn up upon entering the atmosphere
Post your answers here.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Lavani
Mains level: NA

Central idea: The article is based on the controversy surrounding the Maharashtra folk dance form, Lavani, which has come under criticism for being ‘vulgar’ and ‘obscene’.
What is the Lavani folk art form?
- The word Lavani comes from âlavanyaâ or beauty.
- Lavani is a traditional folk art form in which women dancers wearing nine-yard-long sarees in bright colours, make-up, and ghunghroos perform on dholak beats on a stage before a live audience.
- As an indigenous art form, Lavani has a history going back several centuries, and it attained particular popularity in the Peshwa era in the 18th century.
- Traditionally, performances were held in front of kings or lords, and for the entertainment of tired soldiers resting during breaks in fighting.
Genres of Lavani
- There are several types of Lavani, of which the most popular is the Shringarik (erotic) kind, in which the lyrics are often teasing, with sensuous dance steps and delicate gestures employed to convey erotic meaning.
- Over the years, Lavani has gained more acceptability among the people, even though certain taboos around it continue.
- The audience has historically been all-male, but in recent years, some women too have begun to attend performances.
Why is it under fire these days?
- Lost its original form: Some also argue that the commercialization of Lavani has led to a loss of authenticity and cultural significance.
- Objectifying women: The criticism of Lavani dance centres on the traditional dance form’s alleged objectification and commodification of women’s bodies.
- Public obscenity: It has been accused of promoting obscenity and vulgarity and reinforcing patriarchal attitudes towards women.
- Communalizing/Stereotyping: Critics have also argued that the dance form perpetuates negative stereotypes of women from marginalized communities, such as the notion that Dalit women are “loose” or sexually promiscuous.
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From UPSC perspective, the following things are important :
Prelims level: InfoCrop v2.1
Mains level: Use of AI in agriculture

Central idea: Scientists at the Indian Agricultural Research Institute conducted an experiment using InfoCrop version 2.1 to quantify the impact of hot weather on crop yield in Punjab and Haryana.
What is InfoCrop v2.1?
- InfoCrop version 2.1 is Indiaâs only dynamic crop simulation model developed and released by the IARI in 2015 to study the long-term impact of climate change and crop management practices on yield.
- InfoCrop is more suited for India as it has the life cycle data for almost all the local varieties of 11 crops: paddy, wheat, maize, sorghum, pearl millet, pigeon pea, chickpea, soybean, groundnut, potato and cotton.
How does it work?
- In InfoCrop, the parameters are already calibrated to Indian crop varieties and they are updated at regular intervals by the institute.
- The parameters deal with aspects of-
- Weather (precipitation, temperature, radiation and others)
- Crop growth (phenology, grain characteristics, leaf growth, temperature and flooding sensitivity and others)
- Soil (texture and organic carbon, water holding characteristics and pH levels) and
- Pests and crop management (organic matter, fertiliser and irrigation).
Efficiency of InfoCrop model
- The model has an 85 per cent accuracy rate.
- This is on par with widely used dynamic models such as the Decision Support System for Agrotechnology Transfer model, developed by the US, and Agriculture Production Systems sIMulator, developed by Australia.
Utility of this tool
- Prevent on-field corruption: India currently relies on field trials, which are expensive and resource-intensive as well as highly corrupt practise.
- Crop insurance prediction: Government and insurance companies can use this for climate impact projections and for pre- or in-season crop yield forecasts to improve accuracy.
- Assess crop loss: Besides forecasting, simulation models can be used to assess crop loss in the aftermath of an extreme weather event, which can then be used to provide relief packages.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Marburg Virus
Mains level: Rise in zoonotic diseases
Central idea: Equatorial Guinea has confirmed its first-ever outbreak of Marburg virus disease.
Where is Equatorial Guinea located?

- Equatorial Guinea is a country located in Central Africa.
- It is situated on the west coast of Africa, bordered by Cameroon to the north and Gabon to the south and east. It also includes two small islands, Bioko and Annobon, which are located in the Atlantic Ocean.
|
Marburg Virus
- The Marburg virus is a highly dangerous pathogen that targets several organs and reduces the body’s ability to function on its own.
- Depending on the strain and case management, the fatality rates for the virus range from 24% to 88%.
Transmission and Prevention
- The natural carrier of the Marburg virus is the African fruit bat, which carries the virus but does not fall sick from it.
- Human-to-human transmission occurs through contact with blood or other bodily fluids.
- Rehydration treatment to alleviate symptoms can improve the chances of survival.
Its outbreaks
- The virus has caused simultaneous outbreaks of disease in laboratories in Marburg, Germany and Belgrade, Serbia in 1967, resulting in seven deaths.
- During an outbreak in Angola in 2004, the virus killed 90% of the 252 people who were infected, and in Ghana last year, two people died of Marburg.
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https://indianexpress.com/article/explained/explained-health/equatorial-guinea-confirms-marburg-virus-outbreak-explained-8443753/
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Office of Profit
Mains level: Read the attached story
Central idea: Jharkhand CMâs chair remains uncertain as the Election Commission (EC) is understood to have conveyed its decision in an office-of-profit complaint against him to the Governor.
Why in news?
- Under Section 9A of the Representation of the People Act, 1951, the CM could face disqualification for entering into a government contract.
- The Constitution of India does not define the Office of Profit. It has only mentioned it under Article 102 (1) and Article 191 (1).
What is âOffice of Profitâ?
- In India, the concept of an “Office of Profit” refers to a situation where a person holds a government position that brings them financial gain or other advantages, while at the same time they hold an elected or other public office.
- The idea behind this concept is to prevent any conflict of interest and ensure that elected representatives do not hold positions that may compromise their independence and impartiality.
Indian context to this
- MPs and MLAs, as members of the legislature, hold the government accountable for its work.
- The essence of disqualification is if legislators hold an âoffice of profitâ under the government, they might be susceptible to government influence, and may not discharge their constitutional mandate fairly.
- The intent is that there should be no conflict between the duties and interests of an elected member.
- Hence, the office of profit law simply seeks to enforce a basic feature of the Constitution- the principle of separation of power between the legislature and the executive.
What governs the term?
- At present, the Parliament (Prevention of Disqualification) Act, 1959, bars an MP, MLA or an MLC from holding any office of profit under the central or state government unless it is exempted.
- However, it does not clearly define what constitutes an office of profit.
- Legislators can face disqualification for holding such positions, which bring them financial or other benefits.
- Under the provisions of Article 102 (1) and Article 191 (1) of the Constitution, an MP or an MLA (or an MLC) is barred from holding any office of profit under the Central or State government.
An undefined term
- The officials of the law ministry are of the view that defining an office of profit could lead to the filing of a number of cases with the Election Commission and the courts.
- Also, once the definition is changed, one will also have to amend various provisions in the Constitution including Article 102 (1) (a) and Article 109 (1) (a) that deal with the office of profit.
- It will have an overarching effect on all the other sections of the Constitution.
Factors constituting an âoffice of profitâ
- The 1959 law does not clearly define what constitutes an office of profit but the definition has evolved over the years with interpretations made in various court judgments.
- An office of profit has been interpreted to be a position that brings to the office-holder some financial gain, or advantage, or benefit. The amount of such profit is immaterial.
- In 1964, the Supreme Court ruled that the test for determining whether a person holds an office of profit is the test of appointment.
What is the âtest of appointmentâ?
Several factors are considered in this determination including factors such as:
- whether the government is the appointing authority,
- whether the government has the power to terminate the appointment,
- whether the government determines the remuneration,
- what is the source of remuneration, and
- power that comes with the position
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Try this MCQ:
Q. What is an “Office of Profit” in India?
a) A position that is controlled by the government and comes with no financial gain or other benefits.
b) A position that is controlled by the government and comes with some financial gain or other benefits.
c) A position that is controlled by the private sector and comes with no financial gain or other benefits.
d) A position that is controlled by the private sector and comes with some financial gain or other benefits.
Post your answers here.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Read the attached story
Mains level: Social reforms stipulated by Dr. Ambedkar

Dr. BR Ambedkar was India’s first Law Minister after independence. The letter of his resignation is now missing from official records.
Dr Ambedkar as Law Minister
- Dr. B.R. Ambedkar served as Independent India’s first law minister.
- He was an Indian jurist, economist, politician, and social reforme, who was posthumously awarded the Bharat Ratna in 1990.
- It is believed that Sardar Patel and Mahatma Gandhi proposed Dr. Ambedkar’s name for the post of Law Minister in the Nehru Cabinet.
Why was he selected for the post?
- Being father of our Constitution: Sardar Patel, then deputy PM, had a high regard for Dr. Ambedkar’s intellectual abilities and his contributions to the drafting of India’s Constitution.
- Political urge for inclusivity: Additionally, Dr. Ambedkar’s role in the Dalit movement and his fight against caste discrimination also made him a significant political figure.
- Representation of the marginalized: His appointment as the Law Minister was seen as a symbol of inclusivity and representation of marginalized communities in the government.
Why did Dr. Ambedkar resign?
- Political differences with Nehru: He resigned as Law Minister, due to differences with the then PM, Jawaharlal Nehru, over the Hindu Code Bill. He specifically wanted to reform Hindu Personal Laws and not every personal laws in India.
- Row over reforming Personal Laws: The bill aimed to reform Hindu personal laws related to marriage, divorce, and inheritance, but Dr. Ambedkar believed that it did not go far enough in granting women’s rights and wanted more radical changes.
- Injustice to women: Ambedkar had proposed a more comprehensive set of reforms that would have given women greater rights in matters such as property ownership and inheritance, but his proposals were met with resistance from Nehru and other members of the government.
Efforts to locate his resignation letter
- The letter was not found in the National Archives of India and the Ministry of Home Affairs.
- The Maharashtra government has also been unable to locate the letter in its archives.
- RTI (Right to Information) requests were also unsuccessful.
Significance of his letter
- The missing letter is a matter of concern as it is an important historical document.
- Ambedkar’s resignation was a significant event in India’s political history and the reasons behind it are still relevant today.
- The letter could shed light on the differences between the visionary Dr. Ambedkar and then mainstream politicians.
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India’s first Provisional Government (Constitutionally)
- Jawaharlal Nehru became the first Prime Minister of India after the country gained independence in 1947.
- The members of his first cabinet, which was sworn in on August 15, 1947, were as follows:
- Jawaharlal Nehru – Prime Minister and Minister of External Affairs
- Vallabhbhai Patel – Deputy Prime Minister and Minister of Home Affairs
- Dr. B.R. Ambedkar – Minister of Law and Member of the Viceroy’s Executive Council
- C. Rajagopalachari – Minister of Industry and Supply
- John Mathai – Minister of Railways
- Liaquat Ali Khan – Minister of Finance
- Baldev Singh – Minister of Defence
- Sardar Baldev Singh – Minister of Communications
- Sardar Swaran Singh – Minister of Works, Mines and Power
- Jagjivan Ram – Minister of Labour and Rehabilitation
- Dr. Rajendra Prasad – Minister of Food and Agriculture
- Maulana Abul Kalam Azad – Minister of Education
- Sardar K.M. Panikkar – Minister of States
- Rafi Ahmed Kidwai – Minister of Communications (Independent Charge)
- Asaf Ali – Minister of Railways (Independent Charge)
- It is worth noting that this was a provisional government, and the first general election to form a permanent government was held in 1952.
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Note: Azad Hind was not Indiaâs first provisional government. The credit for establishing that â formally known as the ”Hukumat-i-Moktar-i-Hind” â in Kabul on 1st Dec, 1915, goes to Raja Mahendra Pratap and Maulana Barkatullah.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Axiom Mission 2
Mains level: NA

Central idea: Saudi Arabia will send its first-ever woman astronaut on the US-led Axiom 2 space mission later this year, in the latest move to revamp the kingdom’s ultra-conservative image.
Axiom Mission 2
- Axiom Mission 2 is a private spaceflight mission organized by Axiom Space, a Houston-based aerospace company.
- The mission is scheduled to launch in 2023 and aims to send four private individuals on a 10-day trip to the International Space Station (ISS).
- Rayyana Barnawi will join fellow Saudi male astronaut Ali Al-Qarni on a mission to the International Space Station (ISS) during the second quarter of 2023.
- The mission is the second private crewed flight to the ISS, following the Inspiration4 mission by SpaceX.
- The crew is expected to undergo months of training, including simulations, physical conditioning, and emergency procedures.
- The mission is part of Axiom Space’s plan to establish a private space station attached to the ISS, which is expected to be launched in 2024.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Maharishi Dayanand Saraswati
Mains level: Not Much

PM inaugurated celebrations commemorating Maharishi Dayanand Saraswatiâs 200th birth anniversary.
Dayanand Saraswati (1824-1883)
- Dayanand Saraswati (born Mool Shankar Tiwari) was a religious leader and founder of the Arya Samaj, a reform movement in the nineteenth century.
- He was a profound scholar of the Vedic lore and Sanskrit language.
- Dayanand was a great scholar, and was well-versed in the Vedas and the Upanishads.
- He was also proficient in Sanskrit grammar, philosophy, religion, politics and other sciences.
Notable works
(1) Literary works
- He wrote several books, including the Satyarth Prakash, which became the moral and spiritual foundation of the Arya Samaj.
- This book was translated into many languages, including Hindi, English and Urdu.
(2) Freedom movement
- He was the first to give the call for Swaraj as “Indian for India” – in 1876, a call later taken up by Lokmanya Tilak.
- Subsequently, the philosopher and President of India, S. Radhakrishnan, called him one of the “makers of Modern India”, as did Sri Aurobindo.
(3) Religious reform
- Denouncing the idolatry and ritualistic worship prevalent in Hinduism at the time, he worked towards reviving Vedic ideologies.
- He believed that the Vedas should be interpreted in the light of reason and not of blind faith.
- He also campaigned against animal sacrifice and the worship of idols.
(4) Social reform
- Dayanand was a staunch advocate of women’s rights.
- He believed in the equality of all human beings and advocated the abolition of the caste system.
(5) Education
- Dayanand was an ardent believer in the power of knowledge and education.
- He established the Gurukul system of education, which provided free education to all, irrespective of caste or gender.
- Based on his teachings, in 1885 the first DAV School was established at Lahore which was subsequently upgraded to become the first DAV College.
- In 1886 the DAV College Trust and Management Society was established and registered.
Try this PYQ:
Which among the following event happened earliest?
(a) Swami Dayanand established Arya Samaj
(b) Dinabandhu Mitra wrote Neeldarpan
(c) Bankim Chandra Chattopadhyay wrote Anandmath
(d) Satyendranath Tagore became the first India to succeed in the Indian Civil Services Examination.
Post your answers here.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Quasicrystals
Mains level: NA

Scientists have discovered a new type of quasicrystal, one with 12-fold symmetry, in the Sand Hills of north central Nebraska, USA.
What is a Quasicrystal?
- Quasicrystal is essentially a crystal-like substance.
- However, unlike a crystal, in which atoms are arranged in a repeating pattern, a quasicrystal consists of atoms that are arranged in a pattern that doesnât repeat itself regularly.
- For the longest time, physicists believed every crystalline arrangement of atoms must have a pattern that repeats itself perfectly over and over again.
- However, this changed in 1982, when material scientist Dan Shechtman discovered crystal structures that are mathematically regular, but that do not repeat themselves.
How are they formed?
- Electrical discharge triggered quasicrystal formation in the recent finding.
- Itâs also the first time that researchers have found a quasicrystal somewhere other than meteorites or the debris from nuclear blasts.
Applications of quasicrystals
- There is no major commercial applications yet exploit properties of the quasicrystalline state directly.
- Quasicrystals form in compounds noted for their high strength and light weight, suggesting potential applications in aerospace and other industries.
- They can be used in surgical instruments, LED lights and non-stick frying pans.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Agasthyarkoodam Observatory
Mains level: NA

Agasthyarkoodam was once home to a forgotten and long-lost 19th-century observatory established by Scottish meteorologist John Allan Broun.
Agasthyarkoodam Observatory
- The Agasthyarkoodam Observatory is an astronomical research observatory located in the state of Kerala.
- The observatory is situated at an altitude of 1600 meters above sea level and is owned and operated by the Indian Institute of Astrophysics (IIA).
- The observatory is equipped with a 1-meter optical telescope and various other instruments for studying the night sky.
- The observatory is used for research and educational purposes and is open to the public for viewing night-sky objects.
Why in news?
- Agasthyarkoodam in the Western Ghats once housed a magnetic observatory that was established by Scottish meteorologist John Allan Broun.
- Broun used it to record magnetic and meteorological observations in tandem with the Thiruvananthapuram astronomical observatory.
- Brounâs astronomical research in India began after he was invited by the ruler of the erstwhile Travancore Uthram Tirunal Marthanda Varma to helm the Thiruvananthapuram observatory following the death of its first director John Caldecott in 1849.
- The observatory started recording observations in July 1855.
- However, it was closed in 1881 by the then Madras Governor Sir William Denison.
What are magnetic observatories?
- Magnetic observatories continuously measure and record Earthâs magnetic field at a number of locations.
- In an observatory of this sort, magnetized needles with reflecting mirrors are suspended by quartz fibres.
- Light beams reflected from the mirrors are imaged on a photographic negative mounted on a rotating drum.
- Variations in the field cause corresponding deflections on the negative.
- Their magnetograms are photographed on microfilm and submitted to world data centres, where they are available for scientific or practical use.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Solar Prominence
Mains level: Not Much

Recently, the sun puzzled many scientists with a large prominence near its north pole.
What is Solar Prominence?
- A solar prominence (also known as a filament when viewed against the solar disk) is a large, bright feature extending outward from the Sun’s surface.
- Prominences are anchored to the Sun’s surface in the photosphere, and extend outwards into the Sun’s hot outer atmosphere, called the corona.
- A prominence forms over timescales of about a day, and stable prominences may persist in the corona for several months, looping hundreds of thousands of miles into space.
How are they formed?
- Scientists are still researching how and why prominences are formed.
- The red-glowing looped material is plasma, a hot gas comprised of electrically charged hydrogen and helium.
- The prominence plasma flows along a tangled and twisted structure of magnetic fields generated by the sunâs internal dynamo.
- An erupting prominence occurs when such a structure becomes unstable and bursts outward, releasing the plasma.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Delhi-Mumbai Expressway
Mains level: Road infrastructure

Photos of the soon-to-be-inaugurated Delhi-Mumbai Expressway have gone viral, receiving widespread appreciation online.
Delhi-Mumbai Expressway
- The Delhi-Mumbai Expressway is a proposed 1380 km expressway that will link the capital city of Delhi to Mumbai, India.
- The expressway is being planned as a six-lane expressway and will pass through the states of Uttar Pradesh, Rajasthan, Madhya Pradesh and Maharashtra.
- Started in 2018, the project is set to be completed by the end of 2023.
- The expressway is expected to reduce the travel time between Delhi and Mumbai by up to 12 hours.
- The expressway will also have several rest stops and will be equipped with advanced technology such as electronic toll collection, smart traffic management and surveillance systems.
- The expressway will be built in a Public-Private Partnership (PPP) model.
Some basic details
- The expressway is being constructed with an initial budget of INR 98,000 crore.
- According to claims by the Ministry of Road Transport and Highways, it will reduce the distance between Delhi and Mumbai by 180 km (from 1424 km to 1242 km).
- Depending on the volume of traffic the expressway sees, there are plans in place to expand it to a 12-lane expressway in the future.
- The reduction in distance and travel time is set to result in annual fuel savings of more than 320 million litres and reduce CO2 emissions by 850 million kg.
Some unique features
- Importantly, the Delhi-Mumbai Expressway is set to introduce certain features seldom seen in road construction in India.
- According to claims from the Ministry of Road Transport and Highways, the expressway will boast of a state-of-art traffic management system.
- There will also be a dedicated three metre wide corridor for laying utility lines including fibre optic cables, pipelines as well as solar power generation.
- The expressway will also have provisions for rain water harvesting at intervals of 500 m, with over 2000+ water recharge points.
Provisions for wildlife conservation
- A crucial feature of the project will be its provisions for âwildlife conservationâ.
- The expressway is the first in Asia and only the second in the world to feature animal overpasses and underpasses to facilitate unrestricted movement of wildlife.
- Furthermore, the expressway has been aligned in a way to minimize the destruction of protected forests.
- Two iconic 8-lane tunnels will also be built, one through Mukundra sanctuary without disturbing the endangered fauna in the region and the second through the Matheran eco-sensitive zone.
- A 3 ft tall boundary wall and sound barriers will also be constructed in sections prone to wildlife.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Treaty of Alinagar
Mains level: Not Much

Signed on February 9, 1757, the Treaty of Alinagar between the Nawab of Bengal and the East India Company raised the curtains for British colonial expansion in India.
Treaty of Alinagar, 1757
- Signed on February 9, 1757, the Treaty of Alinagar was signed between Robert Clive of the East India Company and Mirza Muhammad Siraj Ud Daula, then Nawab of Bengal.
- It is said to be one of the key events leading up to the Battle of Plassey later that year.
- Plassey was where the English laid a significant blow, defeating the nawab. It paved the way for the East India Companyâs takeover of Bengal.
- The name Alinagar was a short-lived reference to modern-day Kolkata, and the treaty came about after the nawab was faced with both the British and Afghan forces.
- He compromised with the former; however, the peace was short-lived.
British advent in India: A quick backgrounder
- After the Anglo-Mughal War which took place between 1686 and 1690, the British began consolidating their presence in the subcontinent.
- It had established the Fort St. George in what was Madras, Fort William in then Calcutta and Bombay Castle by the beginning of the 18th century.
- The British initially helped local princes and nawabs quell uprisings or revolts and they, in turn, gave them concessions.
Course of the treaty
- In January 1757, the British attacked the town of Hooghly, close to then Calcutta, with over 700 men.
- The Nawab of Bengal, Siraj-ud-daulah, who had just come to power a year earlier in his early 20s, mobilised forces.
- His troops would overpower the British and reach Calcutta on January 10, 1757, having lost over 600 men.
- However, the losses sustained in the war had resulted in the nawab losing confidence.
- He signed what came to be known as the Treaty of Alinagar with Robert Clive â who became the first British Governor of the Bengal Presidency â on February 9, 1757.
- Siraj-ud-daulah agreed to the restoration of the companyâs factories and allowed for the fortification of Calcutta.
Aftermath of the battle
- The British then moved on to wrest the remaining territories in Bengal from the French, laying siege to Chandannagar.
- However, the move did not go down well with the nawab.
- But, Daulah was also wary of Afghan forces under Ahmad Shah Durrani and the Marathas.
- Traders in his kingdom were already wary of him and there was a conspiracy led by the likes of his military general, Mir Jafar.
- Events would later culminate in the Battle of Plassey on June 23, 1757.
- It resulted in the East India Company gaining hold of Bengal and was a significant event in its rise to power in the subcontinent.
Try this question.
Q.For most Indians, the history of British colonial rule in India begins in Plassey. However, the roots of it were sown long back. Discuss. (250W)
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