💥UPSC 2027,2028 Mentorship (April Batch) + Access XFactor Notes & Microthemes PDF

Type: Prelims Only

  • Modern Indian History-Events and Personalities

    Who was Rani Durgavati?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Rani Durgavati

    Mains level: NA

    rani durgavati

    Central Idea

    • The recent launch of the Rani Durgavati Gaurav Yatra by the Madhya Pradesh government has sparked interest in the life and legacy of Rani Durgavati.
    • As a symbol of India’s self-determination and bravery, Rani Durgavati’s story has gained prominence in political discourse, particularly in relation to tribal outreach.

    Who was Rani Durgavati?

    • Birth and lineage: Rani Durgavati was born in 1524 in the Chandela dynasty in present-day Uttar Pradesh, near the border with Madhya Pradesh. Her father was Raja Salbahan of Ratha and Mahoba, known for the famous Khajuraho temples.
    • Marriage and widowhood: She married Dalpat Shah, the son of Gond King Sangram Shah of the kingdom of Garha-Katanga. However, she was widowed a few years later and took charge of ruling the kingdom.

    Mughal Attack on Garha-Katanga

    • Early Mughal expansion: During the mid-16th century, Akbar led the Mughal Empire’s expansion in India. Rani Durgavati fought against Baz Bahadur, the Sultan of Malwa, who was eventually defeated by Akbar. However, conflicts between the two states continued.
    • Rani Durgavati’s leadership: Rani Durgavati managed the affairs of the kingdom for 16 years, maintaining trade relations and undertaking public works. She was admired for her beauty, grace, courage, and prosperity.

    Battle and Sacrifice

    • Mughal invasion: The Mughal governor Asaf Khan launched an attack on Garha-Katanga, drawn by tales of Rani Durgavati’s bravery and prowess.
    • Her strategy: She positioned her troops in a challenging forested area called Narhi. Although she won the initial battle, the Mughals fortified their position.
    • Sacrifice and defeat: During the prolonged fighting, Rani Durgavati was struck by arrows and, rather than surrendering, is believed to have stabbed herself with her dagger. Her son also lost his life. Asaf Khan consolidated his victory and later returned the kingdom to a member of the Gond dynasty.

    Legacy and Present-day Politics

    • Political symbolism: Rani Durgavati is hailed as a patriotic ruler and defender of culture, becoming a symbol of pride and honor. .
    • Tribal outreach: The renaming of public spaces after tribal leaders reflect efforts to engage with tribal communities, which constitute a significant population in Madhya Pradesh.
  • Innovations in Biotechnology and Medical Sciences

    Endosymbiotic Relationships: Archaea, Mitochondria, and Plant Evolution

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Archaea , Mitochondria

    Mains level: NA

    endosymbioic

    Central Idea

    • Organisms on Earth are categorized into prokaryotes and eukaryotes, with distinct characteristics and evolutionary lineages.
    • Archaea, a subset of unicellular organisms, were discovered to have a different lineage than bacteria and are found in extreme environments.
    • Some archaea, known as the Asgard, exhibit similarities to eukaryotes, leading to insights into the origins of mitochondria and the evolution of complex life forms.

    This article explores the endosymbiotic relationships between archaea and bacteria, the origins of mitochondria, and the unique evolutionary paths taken by plants.

    Archaea and Unique Lineages

    • Prokaryotes and Eukaryotes: Organisms are broadly divided into prokaryotes (unicellular, lacking organelles and nucleus) and eukaryotes (contain organelles and nucleus, often complex and multicellular).
    • Archaea’s Distinct Lineage: Archaea differ from bacteria in cell wall composition and gene sequence and were initially found in extreme environments.
    • Asgard Archaea: Asgard archaea, named after Norse mythology, exhibit proteins resembling eukaryotic proteins and are found in unique ecosystems.

    Origins of Mitochondria and Chloroplasts

    • Endosymbiotic Theory: Mitochondria and chloroplasts, responsible for energy generation and photosynthesis, respectively, evolved from free-living bacteria through endosymbiosis.
    • Mitochondria’s Origin: Mitochondria evolved from a proteobacteria that was engulfed by an Asgard archaea, leading to the development of animals, fungi, and plants.
    • Plant Evolution: In plants, the Asgard-mitochondrial union was followed by the incorporation of a photosynthesizing cyanobacterium, which became the chloroplast.

    Complexity of such Relationships

    • Challenges of Symbiosis: Establishing a functional symbiotic relationship between independent life forms presents challenges.
    • Plant Approach: Plants made choices to optimize gene retention, favoring archaean genes for information technology processes and bacterial genes for operations and housekeeping tasks.
    • Gene Transfer to the Nucleus: Over time, many mitochondrial genes were transferred to the nucleus, creating a more efficient arrangement.

    Insights from Cellular Process Studies

    • Reconfiguring Cellular Processes: The research of Rajan Sankaranarayanan’s group at CCMB focuses on understanding the reconfiguration of cellular processes in endosymbiotic relationships.
    • Animal and Fungal Adaptations: Animals and fungi adapt by inducing changes in mitochondria to work around discrepancies in amino acid discrimination mechanisms.
    • Plant Evolution Complexity: Plants handle the complexity of three gene sets involved in their evolution by segregating policing machineries in the cytoplasm and mitochondria.
  • Innovations in Biotechnology and Medical Sciences

    Cell-Cultivated Chicken gets US FDA Approval

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Cell-Cultivated Chicken

    Mains level: Not Much

    chicken

    Central Idea

    • Two US-based companies have received approval from the US Food and Drug Administration (FDA) to produce and sell cell-cultivated chicken, a type of lab-grown meat.
    • This development is seen as a significant step towards reducing carbon emissions associated with the food industry.

    Cell-Cultivated Chicken: How is it made?

    • Cell Isolation: The companies isolate cells from live animals that are likely to taste good and reproduce consistently.
    • Nutrient-Rich Mixture: The isolated cells are combined with a broth-like mixture containing essential nutrients, such as amino acids, fatty acids, sugars, salts, vitamins, and others required for cell growth.
    • Cultivation in Bioreactors: The cells are placed in bioreactors or cultivators, creating a controlled environment that supports cell growth.
    • Rapid Proliferation: Within two to three weeks, the cells multiply and form either large sheets (Upside Foods) or cell aggregates (Good Meat).
    • Processing and Shaping: The cellular materials are collected, processed, and shaped into various meat products such as cutlets, sausages, or other forms.

    Forms of Cell-Cultivated Meat

    • Focus on Chicken: Good Meat and Upside Foods initially concentrate on cell-cultivated chicken, given its global consumption demand.
    • Expansion Plans: These companies aim to extend their offerings to include other meats in the future. Research is underway for cell-cultivated versions of beef, sea bass, tuna, and shrimp.

    Motivations behind Cell-Cultivated Meat

    • Climate Mitigation: Cell-cultivated meat has the potential to reduce carbon emissions and land use associated with livestock production, addressing climate change concerns.
    • Animal Welfare: By eliminating traditional animal farming, it aims to prevent animal cruelty.
    • Food Security: Advocates view alternative meat as a means to meet nutritional demands worldwide.

    Challenges to Overcome

    • Consumer Acceptance: Ensuring that cell-cultivated meat matches the taste, texture, and appearance of traditional meat remains a challenge for widespread adoption.
    • Cost Factors: The cost of cell-cultivated meat is expected to remain high in the near future, with concerns regarding quality control at scale.
    • Resource Requirements: High-quality cells, suitable growth mediums, and other resources are necessary for successful cultivation.
    • Environmental Impact: Studies highlight uncertainties regarding the environmental impact of cell-cultivated meat production, particularly concerning the growth medium used.
  • Festivals, Dances, Theatre, Literature, Art in News

    Rath Yatra in Puri

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Rath Yatra

    Mains level: Not Much

    rath yatra puri

    Central Idea

    • The Rath Yatra (Chariot Procession), a grand festival held in Puri, Odisha, attracts millions of visitors from around the world.
    • This article explores the significance and key elements of the Rath Yatra Festival.

    What is Rath Yatra?

    rath yatra puri

    • Divine pilgrimage: According to mythology, Lord Jagannath embarks on a nine-day sojourn along with his siblings to his birthplace, the Gundicha Temple.
    • The idols’ stay: The deities, Lord Jagannath, Lord Balabhadra, and Devi Subhadra, reside at the Gundicha Temple until the “Bahuda Yatra” (returning car festival) on June 28.
    • Procession: The Rath Yatra takes place on the second day of the Odia month of Ashadha Shukla Tithi. It involves a procession of the deities from the Jagannath Temple to the Gundicha Temple.

    Key attractions

    • Decorated chariots: The three enormous chariots, Taladhwaja Rath for Lord Balabhadra, Darpadalan Rath for Goddess Subhadra, and Nandighosa Rath for Lord Jagannath, are crafted with specific colors, dimensions, wooden horses, guardian deities, and charioteers. Skilled artisans use traditional techniques to build these chariots.
    • Chhera Panhara Ritual: Before the chariots are pulled, the scion of the erstwhile Puri royal family performs the Chhera Panhara ritual. The king sweeps the chariot floors with a golden broom, emphasizing the dignity of labor and equality before the Lord.
    • Present pulling: Puri’s (ceremonial) king, Gajapati Dibyasingha Deb, has been performing the Chhera Panhara ritual since 1971, highlighting the long-standing tradition.

    Significance of the festival

    • Devotee participation: The Rath Yatra draws a massive crowd, including foreigners, who flock to witness the grand spectacle.
    • Touching the chariot ropes: Devotees strive to touch the ropes of the chariots, as it is believed that the Lord bestows blessings upon those who participate in pulling the chariots.

    Return Festival: Bahuda Yatra and Suna Besha

    • Bahuda Yatra: The return festival takes place on Ashadha Shukla Dasami. The deities are offered a special cake called “Poda Pitha” at the Mausimaa Temple before their journey back to the Jagannath Temple.
    • Suna Besha: Following the Bahuda Yatra, the deities are adorned with gold ornaments during the Suna Besha ceremony. Devotees flock to witness this spectacle, where the lords are beautifully decorated with gold.
    • Homecoming: Niladri Bije marks the end of the Rath Yatra and symbolizes the homecoming of the deities to the Jagannath Temple.
    • Offering to Goddess Laxmi: Devotees offer Rasagola, a sweet dish made of cheese, to appease Goddess Laxmi on behalf of Lord Jagannath. This ritual seeks to pacify the goddess, who is believed to be upset for not being taken on the chariots.

    Also read:

    Places in news: Jagannath Puri Temple

  • President’s Rule

    President’s Rule not an option in Manipur: MHA

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: President Rule, Article 356

    Mains level: NA

    Central Idea: Union Home Minister has said that imposition of President’s Rule in Manipur was not an option and the situation was soon returning to normal.

    What is President Rule?

    • Article 356 of the Indian Constitution, commonly known as President’s Rule, empowers the President to impose central rule in a state where the constitutional machinery has broken down.
    • While initially intended for extraordinary circumstances, it has often been misused by central governments for political purposes.

    Provisions of Article 356:

    • Imposition of President’s Rule: Article 356 allows the President to withdraw the executive and legislative powers of a state government when it cannot function in accordance with the Constitution.
    • Triggering factors: The President can invoke Article 356 based on a report from the Governor or suo motu if the constitutional machinery has broken down in the state.
    • Duration: It can be imposed for six months at a time, with a maximum duration of three years.
    • Parliamentary approval: Every six months, Parliament’s approval is required to continue the imposition of President’s Rule.

    Historical Origins

    • Inspiration from the Government of India Act, 1935: Article 356 was inspired by Section 93 of this act, which allowed the Governor of a province to assume the powers of the government under certain circumstances.
    • Controlled democracy: The provision provided some autonomy to provincial governments while enabling British authorities to exercise ultimate power when necessary.

    Political Misuse of Article 356

    • Early instances: During Congress dominance, Article 356 was used against governments of the Left and regional parties in states. Jawaharlal Nehru’s government utilized it six times until 1959, including to dislodge Kerala’s elected communist government.
    • Increasing misuse: In subsequent decades, Article 356 was used frequently against state governments by various central governments, including those led by Indira Gandhi and the Janata Party.

    Landmark Judgment: S R Bommai Case

    • Landmark Supreme Court ruling: In the 1994 R. Bommai v. Union of India case, the Supreme Court provided detailed guidelines on the use of Article 356.
    • Specific instances for imposition: The court stated that President’s Rule can be invoked in cases of physical breakdown of the government or a ‘hung assembly.’
    • Curbing arbitrary use: The judgment emphasized the need to give the state government a chance to prove its majority or instances of violent breakdown before imposing President’s Rule.

    Try this PYQ:

    Which of the following are not necessarily the consequences of the proclamation of the President’s rule in a State?

    1. Dissolution of the State Legislative Assembly
    2. Removal of the Council of Ministers in the State
    3. Dissolution of the local bodies

    Select the correct answer using the code given below:

    (a) 1 and 2

    (b) 1 and 3

    (c) 2 and 3

    (d) 1, 2 and 3

     

    Post your answers here.

  • Russian Invasion of Ukraine: Global Implications

    NATO’s Exercise Air Defender, 2023

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Exercise Air Defender 2023

    Mains level: NA

    air defender

    Central Idea

    • NATO recently concluded its largest air defense exercise, Air Defender 2023, in Germany.
    • The exercise involved 250 military aircraft, including 100 from the United States, and aimed to enhance air defense capabilities and deterrence.

    Exercise Air Defender 2023

    • Largest air defense exercise: Air Defender 2023 marked the largest air defense exercise in the history of NATO, with participation from multiple member nations.
    • Enhanced air defense capabilities: The exercise focused on improving air defense strategies, coordination, and interoperability among NATO forces.
    • Successful execution: Despite initial concerns, the exercise performed better than anticipated, resulting in minimal disruptions to regular civilian flights.

    Deterrence and Signalling to Russia

    • Preparing for potential threats: Air Defender 2023 was planned long before the conflict between Russia and Ukraine escalated. The exercise aimed to strengthen NATO’s deterrence posture and send a clear signal to Moscow.
    • German Defense Minister’s perspective: German Defense Minister Boris Pistorius viewed the exercise as a demonstration of NATO’s commitment to deterrence, stating that Russia would take notice of the significant military activity.
    • Addressing past criticisms: The Bundeswehr, Germany’s armed forces, have faced criticism for being under-equipped and under-prepared. Air Defender 2023 showcased Germany’s efforts to enhance its war-fighting capabilities.
    • Positive outcomes: The successful execution of the exercise bolstered Germany’s image, demonstrating its readiness and ability to defend itself and its allies.
    • Human connection: The exercise fostered camaraderie and collaboration among pilots from different nations, leaving a positive impression of Germany’s hospitality and professionalism.
  • Modern Indian History-Events and Personalities

    Heliopolis Memorial for Indian Soldiers

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Heliopolis Memorial

    Mains level: NA

    heliopolis

    Central Idea

    • PM Modi will pay his respects at the Heliopolis (Port Tewfik) Memorial in the Heliopolis War Cemetery in Cairo, Egypt.
    • Here the names of nearly 4,000 Indian soldiers who fought in World War 1 in Egypt and Palestine are commemorated.

    Heliopolis Memorial

    • Unveiling and Destruction: The original Port Tewfik memorial unveiled in 1926 and later destroyed during the Israeli-Egyptian War of 1967.
    • New Memorial: A new memorial was erected in Heliopolis Commonwealth War Grave Cemetery in 1980, commemorating Indian soldiers who died in the First World War campaigns in Egypt and Palestine.
    • Inclusion of Names: The new memorial includes the names of Indian soldiers, unlike its predecessor.

    Role of the Indian Army in West Asia during World War 1

    • Significance of Indian Troops: Indian troops played a major role in securing the Suez Canal in Egypt and participating in campaigns in Palestine and Mesopotamia.
    • Battle of Haifa: Indian cavalry’s participation in the Battle of Haifa, commemorated by a war memorial in New Delhi.
    • Diverse Representation: The memorial commemorates numerous Indian regiments from the Indian Army and State Forces of princely states.
    • Princely States’ Contribution: Troops from princely states actively participated in various theatres of the war effort during World War 1.

    Prominent Indian Soldier Commemorated  

    • Risaldar Badlu Singh: Risaldar Badlu Singh, a brave soldier and Victoria Cross recipient, is commemorated at the memorial.
    • Selfless Sacrifice: Risaldar Badlu Singh displayed exceptional bravery and self-sacrifice during a charge against enemy positions.

     

  • Foreign Policy Watch: India-United States

    What is the Samosa Caucus?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Samosa Caucus

    Mains level: Not Much

    samosa

    Central Idea

    • Defining the Term: In a recent address to the United States Congress, Indian Prime Minister Narendra Modi spotlighted the “Samosa Caucus,” a casual descriptor for the group of U.S. politicians of Indian origin.
    • Indian Roots in America: This reference was of immense significance to the millions of U.S. residents with Indian heritage, including some members of the Congressional chamber itself.

    Etymology and Symbolism: “Samosa Caucus”

    • Origin of the Term: The phrase “Samosa Caucus” has its roots in 2018, reportedly coined by Representative Raja Krishnamoorthi from Illinois.
    • Strong Cultural Identity: Its usage resonates with the idea of a strong identification with Indian culture, symbolized by the samosa, a quintessential Indian snack. This cultural symbol extends into the digital realm, with “Samosapedia” serving as a repository of Indian slang.

    Symbol of Achievement: Vice President Kamala Harris

    • Recognizing a Milestone: The Prime Minister specifically mentioned Vice President Kamala Harris, epitomizing the accomplishments of the Indian American community.
    • Hope for a Growing Influence: He voiced his hopes for the expansion of the “Samosa Caucus” and its potential role in symbolically bringing the rich diversity of Indian cuisine into the House, indicating a larger acceptance and appreciation of Indian culture.

    Total Indian American Representatives in Congress

    • Count of Indian Origin Representatives: Currently, there are five U.S. Representatives of Indian descent, with a notable sixth, Vice President Harris, heading the Senate. All these politicians are members of the Democratic Party.
    • Names and Constituencies: These representatives are Shamal Thanedar from Michigan, Dr. Ami Bera and Ro Khanna from California, Pramila Jayapal from Washington, and Raja Krishnamoorthi from Illinois.

    Influence beyond Congress: Indian Americans in the U.S. Administration

    • Broad-Based Representation: Indian Americans occupy various crucial roles within the Biden Administration, signifying their influence in American policymaking.
    • Assertive Community Voice: This considerable representation emphasizes the strong voice of the Indian American community in shaping America’s future.

     

  • Tourism Sector

    Titanic Submersible Expedition

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Titan Submersible

    Mains level: Submersible Tourism

    titanic

    Central Idea: All five crew onboard the Titan submersible are dead after a catastrophic implosion.

    What is Submersible?

    • Submersibles are vessels designed for underwater travel, often used for research, exploration, and tourism purposes.
    • They are white tubes of about 6.7 meters long and 2.8 meters wide, and have a top speed of three knots or 5.5 kilometers (3.5 miles) an hour.
    • In the context of tourism, submersibles provide passengers with the opportunity to experience the wonders of the underwater world and explore marine ecosystems.
    • Submersible tourism has gained popularity among adventurous travellers, offering unique opportunities to explore the underwater world.

    Submersible Tourism and the Titanic Site 

    • The wreckage of the RMS Titanic, discovered in 1985, has been a popular destination for tourists over the years.
    • OceanGate Expeditions began offering Titanic expeditions, taking crews of “citizen scientists” and “crew members” to the site since 2010.

    About Titan Submersible 

    • The Titan submersible was constructed using titanium and filament-wound carbon fiber.
    • With a length of 22 feet and a weight of 10,432 kg, it was capable of reaching depths of 4,000 meters (13,123 feet).

    Functionality and Equipment

    • The submersible employed 4 electric thrusters for movement and maneuverability.
    • Equipped with an array of cameras, lights, and scanners, the Titan facilitated deep-sea exploration and surveying.
    • Communication in deep waters was achieved using sound waves (sonar) since radio waves do not transmit effectively.

    Differentiating Submersibles and Submarines  

    • Submersibles, such as the Titan, are not fully autonomous and require support ships for launch and recovery.
    • They descend using weights and do not possess the power to launch independently.
    • Submarines, on the other hand, are self-propelled and capable of launching and returning without external support.

    Depth and Cost

    • The maximum depth for the OceanGate Titanic expedition is around 12,800 feet, with the wreck located at 12,500 feet.
    • The cost of touring the Titanic varies, with the OceanGate expedition priced at $250,000 per person.

    Safety Considerations in Submersible Tourism 

    • The submersible tourism industry adheres to international safety standards and has maintained a safety record without incident for 50 years, according to the Marine Technology Society (MTS).
    • Submersible tour companies conduct detailed risk assessments for each experience, ensuring clients are aware of the potential risks involved.
    • Clients often undergo risk assessments and sign waivers before embarking on submersible journeys.
  • Global Geological And Climatic Events

    Understanding Summer Solstice: Longest Day of the Year

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Summer Solstice

    Mains level: Not Much

    summer solstice

    Central Idea

    • The summer solstice, also known as the longest day of the year, occurs on June 21st for those living north of the Equator.
    • This article explores the significance of the summer solstice, the reasons behind its occurrence, and the effects it has on different parts of the world.

    What is Summer Solstice?

    • The summer solstice is the moment when the Earth’s axial tilt is most inclined towards the Sun.
    • It occurs annually on or around June 21st in the Northern Hemisphere.
    • During the summer solstice, the Sun follows its highest and longest path across the sky.
    • This results in an extended duration of daylight hours, making it the longest day of the year.

    Factors Influencing the Summer Solstice

    • Earth’s Axial Tilt: The Earth’s axis is tilted relative to its orbit around the Sun, at an angle of approximately 23.5 degrees.
    • Tropic of Cancer: The summer solstice takes place when the Sun is directly over the Tropic of Cancer, located at 23.5 degrees north latitude.
    • Seasonal Variations: The tilt of the Earth’s axis causes different latitudes to receive varying amounts of sunlight throughout the year.

    Sunlight Distribution in the Hemispheres

    • The Northern Hemisphere receives the maximum amount of sunlight during the summer solstice, typically on June 20, 21, or 22.
    • In contrast, the Southern Hemisphere experiences its peak sunlight during the winter solstice, which occurs on December 21, 22, or 23.

    Cultural Significance and Celebrations

    • The summer solstice holds cultural and religious significance in various civilizations throughout history.
    • Festivals and rituals often commemorate this astronomical event, symbolizing the triumph of light and fertility.
    • People around the world celebrate the summer solstice through festivals, bonfires, music, dancing, and outdoor activities.
    • Notable celebrations include the Summer Solstice Stonehenge Festival in England and the Midnight Sun Festival in Norway.

    Back2Basics: Solstices and Equinoxes

    Summer Solstice Winter Solstice Equinoxes
    Date Around June 21st Around December 21st Around March 20th and September 22nd
    Hemisphere Northern Northern Global (Equal duration of day and night)
    Day Length Longest day and shortest night Shortest day and longest night Equal day and night duration
    Sun’s Path Highest arc in the sky Lowest arc in the sky Intermediate arc in the sky
    Season Summer Winter Spring and Autumn
    Axial Tilt North Pole tilted towards the Sun South Pole tilted towards the Sun No tilt, relative to the Sun
    Daylight Hours Maximum Minimum Approximately equal
    Cultural Significance Celebrated as the triumph of light, festivals, and rituals Celebrated as the return of light, festivals, and rituals Symbolizes balance and transition, celebrated by various cultures