CSE EXAM upsc prelims mains CAPF CDS NDA
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πŸ”† Key Takeaways:

πŸ“ James Princep:
βœ… Deciphered Brahmi and Kharoshti scripts in 1837.

πŸ“ Kautilya’s Arthashastra:
βœ… Important ancient Indian text on governance, politics, and economics.

πŸ“ Five Major Political Centres of Magadha Empire:
1. Capital: Pataliputra
2. Provincial Centres: Taxila, Ujjayini, Tosali, Suvrangiri
β€’ Suvrangiri: Known for tapping the gold mines of Karnataka.

πŸ“ Magesthenes:
βœ… In his Indica Book, he mentioned a committee with 6 sub-committees.

πŸ“ Dhamma Mahamattas:
βœ… Term for one who upholds the Dhamma.

πŸ“ Samantas:
βœ… Wealthy individuals maintaining control over land.

πŸ“ Allahabad Prashasti:
βœ… Composed in Sanskrit by Samudragupta’s court poet Harisen.

πŸ“ Junagadh (Girnar) Rock Inscription:
βœ… Mentions about three kings:
β€’ Ashoka
β€’ Rudradaman
β€’ Skandagupta

πŸ“ Gahapati:
βœ… Large landowners in Tamil South India, known as Vellalar and Ploughmen as Uzhavar.

πŸ“ Harshacharita:
βœ… Biography of Harshavardhana written by Banabhatta.

πŸ“ Agrahara:
βœ… A term for Brahmin settlements where land was granted.

πŸ“ Land Granted to Brahmana:
βœ… Brahmanas were exempted from land revenue and could collect dues.

πŸ“ Types of Pottery in Ancient History:
βœ… Explained in class.

πŸ“ Shrenis:
βœ… Merchants’ guilds/associations.

πŸ“ Malabathrum:
βœ… Cinnamon, Black Pepper, and Yavana Priya.

πŸ“ Successful Merchants in South India:
βœ… Called MASATTWAN in Tamil, SETTHIS, and SATTAVAHAS in Prakrit.

πŸ“ Coins in Ancient India:
βœ… Explained in class.

πŸ“ Pattivedaka:
βœ… Journalists during Ashoka’s reign who informed the ruler about his empire.

πŸ“ DC Sarkar:
βœ… Published β€œIndian Epigraphy and Indian Epigraphical Glossary”.
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πŸ”† Jiyo Parsi Scheme

πŸ“ Launch
βœ… Launched in 2013–14 as a Central Sector Scheme.

πŸ“ Aim
βœ… To address the declining population of the Parsi community in India through structured interventions and medical assistance.

πŸ“ Implemented By
βœ… Ministry of Minority Affairs

πŸ“ Beneficiaries / Target Group
βœ… Parsi couples and families in India.

πŸ“ Financial Assistance
βœ… Provides financial support for fertility treatment under standard medical protocols.
βœ… Assistance is transferred directly through Direct Benefit Transfer (DBT).

πŸ“ Key Features
βœ… Supports:
➑️ Infertility treatment and related medical care
➑️ Childcare assistance
➑️ Support for dependent elderly members

βœ… The scheme aims to improve the demographic profile of the Parsi community by encouraging higher birth rates.

πŸ“ Performance
βœ… Since its launch, the scheme has supported more than 400 Parsi children.

πŸ“ Significance
βœ… The Parsi population in India has been steadily declining due to low fertility rates and ageing population.
βœ… Jiyo Parsi is a targeted intervention to preserve the cultural and demographic identity of the community.

#goverment_schemes

Join https://t.me/PIB_UPSC
https://t.me/upsc_government_scheme
πŸ”† Salkhan Fossil Park

πŸ“ Context
βœ… Recently added to the UNESCO Tentative List for World Heritage Sites.

πŸ“ Location
βœ… Located in Sonbhadra district, Uttar Pradesh.
βœ… Situated in the Kaimur Range, a part of the Vindhya Range, near the Kaimur Wildlife Sanctuary.
βœ… Officially known as Sonbhadra Fossils Park.

πŸ“ Age
βœ… Contains fossils dating back nearly 1.4 billion years to the Mesoproterozoic era.

πŸ“ Key Feature
βœ… Famous for prehistoric stromatolites formed by ancient microorganisms.
βœ… These stromatolites are among the earliest evidence of life on Earth.

πŸ“ Significance
βœ… One of India’s oldest and best-preserved fossil sites.
βœ… Represents living relics of Mesoproterozoic life and early biological evolution.

πŸ“ UNESCO Status
βœ… Recently included in the Tentative List of UNESCO World Heritage Sites.

πŸ“ Global Recognition
βœ… Recognised as a geo-heritage site under the 2020 guidelines of the International Union for Conservation of Nature for β€œEvolution of Life”.
βœ… Also aligns with UNESCO’s 2021 framework on Earth’s history and evolution of life.

#prelims
#art_and_culture

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❀2
Day 112: 9 April target:

Polity: REVISION

Topics -
Constitutional and Non-constitutional Bodies
Misc.

PYQs


Current Affairs: October, November 2025
Polity only


#UpscRevisionProgram

After completion of target post 'DONE'
In comment section. Targets are decided as per practical approach. In remaining time, you can study whatever you want.
Thank you.

@upsc_answer_written
@CSE_EXAM
❀2
#Goodmorning 

⏳45 days  left CSP26[ 24-05-26]
⏳134 days left CSM26 [ 21-08-26]

⏳241 days left UPPSC prelims 6 December
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⏳87 days left UKPSC PRELIMS 5 July
⏳60 days Left OPSC/ GPSC prelims 07 June
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⏳17 days Left MPPSC (MP)/ HCS Prelims 26 April
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JPSC PRELIMS 19 April 
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#Target
#TargetOnlyone
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πŸ‘4❀1
πŸ”† CURRENT AFFAIRS β€” 6 APRIL 2026

πŸ”† INTERNATIONAL

πŸ“ Newcastle Disease Spreads Across Europe
βœ… Europe witnessed the spread of Newcastle Disease in 2026
βœ… Disease caused major losses in poultry production
βœ… Newcastle Disease is a highly contagious viral disease of birds
βœ… Caused by Avian Paramyxovirus-1 (APMV-1)

πŸ“ India and UN Review UNDPF Operations
βœ… India and the United Nations reviewed operations of the United Nations Development Partnership Fund (UNDPF)
βœ… Focus is to improve effectiveness of development projects
βœ… UNDPF was launched in 2017 with an initial fund of $150 million
βœ… Main aim: Achieve Sustainable Development Goals (SDGs) and promote South-South cooperation
βœ… Special focus on:
β€’ Least Developed Countries (LDCs)
β€’ Small Island Developing States (SIDS)

πŸ“ Oxford University Launches UK-wide Tour of Shikshapatri
βœ… University of Oxford launched a nationwide UK tour of the sacred Hindu text Shikshapatri to mark its 200th anniversary
βœ… The tour is organised by Bodleian Libraries
βœ… Shikshapatri was composed by Sahajanand Swami
βœ… It was written in 1826 at Vadtal

πŸ”† NATIONAL

πŸ“ ECINet Introduces β€˜Know Your Candidates’ KYC Feature
βœ… Election Commission of India launched the β€œKnow Your Candidates” feature on ECINet
βœ… Aim: Increase transparency and help voters make informed choices
βœ… ECINet stands for Election Commission Integrated Network
βœ… It is India’s first unified portal for elections
βœ… It merges more than 40 standalone apps such as Suvidha, VIGIL and KYC into one interface
βœ… The feature will be used in upcoming elections in Assam, Kerala, Tamil Nadu, West Bengal and Puducherry

πŸ“ Raja Ravi Varma Painting Sets New Record
βœ… Painting β€œYashoda and Krishna” by Raja Ravi Varma became the most expensive painting ever sold in India
βœ… Sold for β‚Ή167.20 crore (~USD 17.98 million)
βœ… Bought by Cyrus S. Poonawalla
βœ… Painting depicts Yashoda milking a cow while Krishna reaches for milk
βœ… It surpassed the earlier record held by a painting of M. F. Husain
βœ… Raja Ravi Varma is known as the β€œFather of Modern Indian Art” and the β€œRaphael of the East”

πŸ“ Namo Drone Didi Yojana: Karnataka Tops the List
βœ… Karnataka has the highest number of women Self-Help Groups trained as drone pilots under Namo Drone Didi Yojana
βœ… Namo Drone Didi Yojana is a Central Sector Scheme
βœ… Scheme outlay: β‚Ή1,261 crore
βœ… Duration: 2023–24 to 2025–26
βœ… Government provides 80% subsidy on drone cost and accessories up to β‚Ή8 lakh
βœ… Remaining 20% financed through loan support by National Agriculture Infra Financing Facility with 3% interest subvention

πŸ“ First Administrative Capacity Building Programme for Scientists Launched
βœ… Union Minister Jitendra Singh launched India’s first administrative capacity-building programme for scientists and academicians
βœ… Programme launched under Mission Karmayogi
βœ… Aim: Improve administrative and governance skills
βœ… Capacity Building Commission collaborated with the National Monuments Authority to design the programme
βœ… Revamped UNNATI portal was also launched
βœ… UNNATI stands for National Nurturing and Adaptive Technological Interface

πŸ“ Major Ports Handle Record Cargo in FY26
βœ… India’s major ports handled a record 915 million tonnes of cargo in FY 2025–26
βœ… Cargo traffic increased by around 7%
βœ… Top performing ports:
β€’ Deendayal Port Authority
β€’ Paradip Port Authority
β€’ Jawaharlal Nehru Port Authority

πŸ”† DEFENCE

πŸ“ Israel Delivers First Batch of NEGEV LMGs to India
βœ… Israel’s PLR Systems delivered the first batch of NEGEV Light Machine Guns to India on 1 April 2026
βœ… Manufacturing facility is located at Malanpur, Madhya Pradesh
βœ… NEGEV LMGs will strengthen India’s defence preparedness

πŸ“ BRO Celebrates 47th Raising Day of Project Chetak
βœ… Border Roads Organisation celebrated the 47th Raising Day of Project Chetak at Bikaner, Rajasthan
βœ… Motto of Project Chetak: β€œChetak Ka Prayas, Desh Ka Vikas”

πŸ”† STATES

πŸ“ Entry Restrictions for Non-BS-VI Goods Vehicles from November 2026
βœ… From 1 November 2026, entry of non-BS-VI, non-CNG and non-electric goods vehicles will be restricted
❀11
βœ… The move is aimed at reducing pollution
βœ… Bharat Stage emission norms are based on European Euro standards
βœ… BS-VI reduced sulphur content in fuel from 50 ppm to 10 ppm
βœ… BS-VI norms also reduce particulate matter (PM) and nitrogen oxides (NOx)

πŸ“ Rongali Bihu Celebrations Begin in Assam
βœ… Rongali Bihu, also known as Bohag Bihu, marks the Assamese New Year festivities
βœ… It is one of the most important festivals of Assam

πŸ”† IMPORTANT DAYS

πŸ“ International Children’s Book Day 2026
βœ… Observed on 2 April 2026
βœ… Theme: β€œPlant Stories and the World Will Bloom”

πŸ“ International Day for Mine Awareness 2026
βœ… Observed on 4 April 2026 every year to raise awareness about landmines

πŸ“ National Maritime Day 2026
βœ… National Maritime Day is celebrated in India every year on 5 April

πŸ”† AWARDS
πŸ“ President’s Police Colours Awarded
βœ… Uttarakhand Police and Odisha Police were honoured with the President’s Police Colours
βœ… Approved by President Droupadi Murmu
βœ… Uttarakhand Police received the honour on 2 April 2026
βœ… Odisha Police received it on 30 March 2026
βœ… Award recognises bravery, discipline and professionalism

πŸ”† SCIENCE & TECHNOLOGY
πŸ“ BIRAC-BioNest Incubation Centre Supports 26 Startups
βœ… Biotechnology Industry Research Assistance Council BioNest Incubation Centre is functioning at Central Food Technological Research Institute
βœ… Total startups supported so far: 26

πŸ”† SPORTS
πŸ“ Murali Sreeshankar Wins Long Jump Event
βœ… Murali Sreeshankar won men’s long jump at Indian Athletics Series 2026 in Bengaluru
βœ… Winning jump: 8.15 m
βœ… Men’s triple jump winner: Abdulla Aboobacker with 16.82 m

#CurrentAffairs
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πŸ”† CURRENT AFFAIRS β€” 8 APRIL 2026

πŸ”† INTERNATIONAL

πŸ“ France Hosts One Health Summit 2026
βœ… One Health Summit held in Lyon, France from 5–7 April 2026 under France’s G7 Presidency
βœ… One Health approach links:
➑ Human health
➑ Animal health
➑ Plant health
➑ Environment
βœ… Key focus areas: zoonotic diseases, antimicrobial resistance, sustainable food systems and pollution
βœ… Quadripartite partners:
➑ World Health Organization
➑ Food and Agriculture Organization
➑ United Nations Environment Programme
➑ World Organisation for Animal Health

πŸ“ Russia–India Cooperation
βœ… Russia’s First Deputy PM Denis Manturov visited India on 2–3 April 2026
βœ… Co-chaired IRIGC-TEC meeting with S. Jaishankar
βœ… IRIGC-TEC is the key platform for India–Russia trade, economic, scientific and cultural cooperation

πŸ”† NATIONAL

πŸ“ Bharat Tribes Fest 2026
βœ… Bharat Tribes Fest 2026 held at Sunder Nursery from 18 March–5 April
βœ… Organised by Ministry of Tribal Affairs and TRIFED
βœ… New tribal brand launched: RISA – Timeless Tribal
βœ… Brand includes:
➑ 10 clusters
➑ 5 tribal weaves
➑ 2 embroideries
➑ 3 crafts

πŸ“ New TV Rating Policy 2026
βœ… Ministry of Information & Broadcasting notifies Television Rating Policy 2026
βœ… Replaces TRP Guidelines, 2014
πŸ“ Key Reforms
βœ… Landing page viewership will not be counted
βœ… Minimum 50% independent directors mandatory in TV rating agencies
βœ… Net worth requirement reduced from β‚Ή20 crore β†’ β‚Ή5 crore
βœ… TV rating agencies must expand sample size to 80,000 metered homes within 18 months
βœ… Long-term target: 1.2 lakh homes

πŸ“ Textile Demand Report 2024
βœ… Union Minister Giriraj Singh releases report β€œMarket for Textiles & Clothing: National Household Survey 2024”
βœ… Textile and apparel demand increased from β‚Ή4.89 lakh crore (2010) to β‚Ή14.95 lakh crore (2024)
βœ… CAGR: 8.3%
βœ… Per capita demand rose from β‚Ή2,119 to β‚Ή6,066

πŸ“ NHRC Meeting on Food Adulteration
βœ… National Human Rights Commission organised Core Group meeting on Right to Food & Nutrition in New Delhi
βœ… Theme: β€œTackling Food Adulteration in India”
βœ… Chaired by Justice V. Ramasubramanian
βœ… Focus: scale of adulteration, reforms needed and better enforcement of Right to Food

πŸ”† STATES

πŸ“ ITBP to Host Water Sports Championship
βœ… Indo-Tibetan Border Police to host 25th All India Police Water Sports Cluster Championship at Tehri Lake, Uttarakhand
βœ… Championship will continue till 12 April 2026
βœ… Total events: 52
βœ… Includes canoeing, rowing and kayaking

πŸ“ Maharashtra Launches β€˜My Village, Healthy Village’
βœ… Maharashtra CM Devendra Fadnavis launches β€œMy Village, Healthy Village” campaign
βœ… Aim: Improve rural healthcare and promote preventive health services at village level
βœ… Launched on World Health Day (7 April)

πŸ”† SCHEMES

πŸ“ PLI Scheme for Food Processing
βœ… Production Linked Incentive Scheme for Food Processing Industry (PLISFPI) launched by Ministry of Food Processing Industries
βœ… Duration: FY 2021–22 to FY 2026–27
βœ… Total outlay: β‚Ή10,900 crore
πŸ“ Focus Areas
βœ… Ready-to-Eat / Ready-to-Cook products
βœ… Processed fruits & vegetables
βœ… Marine products
βœ… Mozzarella cheese
βœ… Also supports innovative and organic products by SMEs and branding abroad

πŸ”† APPOINTMENTS

πŸ“ Sports & Corporate
βœ… Blanka VlaΕ‘iΔ‡ appointed International Event Ambassador for TCS World 10K Bengaluru 2026
βœ… Ranveer Singh becomes brand ambassador of Jindal Stainless

πŸ“ Other Appointments
βœ… Menaka Guruswamy takes oath as India’s first openly queer MP
βœ… Tejveer Singh assumes charge as Secretary, Department of Chemicals & Petrochemicals
βœ… PM congratulates To Lam on his election as President of Vietnam

πŸ”† BOOKS & AUTHORS

πŸ“ New Autobiography Released
βœ… Former CBI Director R. K. Raghavan releases autobiography β€œA Road Well Travelled”
βœ… First copy received by Nandini Azad in Chennai
βœ… Book covers life and career of the former CBI Director

πŸ”† SPORTS

πŸ“ ISSF World Cup 2026
βœ… At ISSF World Cup in Granada, Indian pair Palak Gulia and Mukesh Nelavalli win gold in 10m Air Pistol Mixed Team event
βœ… It is Mukesh Nelavalli’s first ISSF World Cup medal
❀4
βœ… Palak Gulia had earlier won individual gold at Asian Games 2023

πŸ“ Para Archery
βœ… Payal Nag becomes world’s first quadruple amputee archer to win international gold
βœ… She won gold at 2026 World Para Archery Series Final in Bangkok

#CurrentAffairs
πŸ”† National Social Assistance Programme (NSAP) – Ensuring Social Security

βœ… Implementing Ministry: Ministry of Rural Development
βœ… Type: Centrally Sponsored Scheme (CSS)
βœ… Coverage: Applicable in both rural and urban areas

βœ… Objectives:
β€’ To ensure minimum social security for vulnerable groups β€” elderly, widows, and persons with disabilities (Divyangjan).
β€’ To provide financial and food assistance to BPL families.
β€’ Realizes Article 41 of the Constitution β€” Right to work, education, and public assistance in cases of old age or disability.

βœ… Beneficiary Reach: ~3.09 crore individuals across India.

βœ… Implementation Highlights:
β€’ Beneficiary Selection: By Gram Panchayats/Municipalities.
β€’ Disbursement: 94% through Direct Benefit Transfer (DBT) to bank/post accounts.
β€’ Monitoring: Nodal Secretaries in each State/UT oversee implementation and quarterly reporting.

βœ… Major Components:
1️⃣ IGNOAPS: β‚Ή200–₹500 monthly pension for elderly (60+ years).
2️⃣ IGNWPS: β‚Ή300 monthly pension for widows (40–59 years).
3️⃣ IGNDPS: β‚Ή300–₹500 monthly for persons with β‰₯80% disability (18–79 years).
4️⃣ NFBS: β‚Ή20,000 one-time support to BPL families on death of main breadwinner (18–59 years).
5️⃣ Annapurna Scheme: 10 kg free food grains/month for senior citizens not receiving pension.

#goverment_schemes

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@upsc_government_scheme
❀1πŸ™1
πŸ”† Self Reliant India (SRI) Fund Scheme

πŸ“ Launch
βœ… Launched in 2020 under the Atmanirbhar Bharat Package.

πŸ“ Aim
βœ… To provide equity and quasi-equity funding to MSMEs with growth potential.
βœ… Seeks to reduce dependence on debt and strengthen the long-term capital base of MSMEs.

πŸ“ Implemented By
βœ… Implemented through NSIC Venture Capital Fund Limited (NVCFL).
βœ… NVCFL is a Category-II Alternative Investment Fund registered with the Securities and Exchange Board of India.

πŸ“ Eligibility
βœ… MSMEs meeting revised eligibility norms can avail benefits.
βœ… Eligible enterprises may have turnover up to β‚Ή500 crore.

πŸ“ Target Corpus
βœ… Total target corpus: β‚Ή50,000 crore
➑️ β‚Ή10,000 crore contributed by the Government of India
➑️ β‚Ή40,000 crore mobilised from private investors

πŸ“ Fund Structure
βœ… Operates through a Mother Fund–Daughter Fund model.
βœ… The Government-supported Mother Fund invests in Daughter Funds, which in turn invest in eligible MSMEs.

πŸ“ Significance
βœ… Supports promising MSMEs facing shortage of risk capital.
βœ… Helps MSMEs scale up, generate employment and improve competitiveness.
βœ… Forms an important component of the β‚Ή20 lakh crore Atmanirbhar Bharat package.

#goverment_schemes

Join https://t.me/PIB_UPSC
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❀3
πŸ”† Tianwen-2 Mission

πŸ“ Context
βœ… Recently launched in 2025 by China.

πŸ“ Aim
βœ… The mission aims to:
➑️ Return samples from a near-Earth asteroid
➑️ Explore a comet

πŸ“ Asteroid Target
βœ… The target asteroid is 469219 KamoΚ»oalewa.
βœ… The mission seeks to bring back more than 100 g of asteroid material to Earth.
βœ… KamoΚ»oalewa was discovered in 2016 using the Pan-STARRS1 Telescope.
βœ… Scientists believe the asteroid may contain fragments of the Moon ejected during an ancient collision.

βœ… The mission will use the β€œtouch-and-go” technique:
➑️ The spacecraft arm will briefly touch the asteroid surface for about 5 seconds
➑️ It will collect samples and then move away

πŸ“ Comet Target
βœ… After the asteroid mission, Tianwen-2 will proceed to study comet 311P/PanSTARRS.

πŸ“ Significance
βœ… If successful, China will join a small group of countries, including the United States and Japan, that have successfully returned asteroid samples to Earth.

πŸ“ Other Tianwen Missions
βœ… Tianwen-1
➑️ Launched in 2020 by China.
➑️ It was China’s first successful Mars mission.
➑️ The spacecraft landed in Utopia Planitia.

βœ… Tianwen-3
➑️ Planned around 2028.
➑️ It aims to collect and return samples from Mars.

βœ… Tianwen-4
➑️ Planned around 2030.
➑️ It aims to explore Jupiter.

#GS3
#prelims
#science_technology
#science_and_technology

Join https://t.me/PIB_UPSC
https://t.me/upsc_science_and_technology
#Goodmorning 

⏳44 days  left CSP26[ 24-05-26]
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πŸ”† Maa Kamakhya Temple

πŸ“ Location
βœ… Located in Guwahati, atop the Nilachal Hill on the banks of the Brahmaputra River.
βœ… Dedicated to Goddess Kamakhya.

πŸ“ Background
βœ… According to legend, the temple was originally built by Narakasura.
βœ… Historical records date to 1565, when Nara Narayan rebuilt the temple.

πŸ“ Architecture
βœ… Reconstructed in the Nilachal style of architecture.
βœ… The Nilachal style combines Nagara and Saracenic/Mughal architectural influences.
βœ… The temple has a distinctive brick dome shaped like a 16-sided polygon.

πŸ“ Religious Significance
βœ… Kamakhya is one of the 51 Shakti Peethas.
βœ… Each Shakti Peetha is associated with a body part of Sati.
βœ… It is one of the most important centres of the Shakti cult in India.

πŸ“ Festival
βœ… The famous Ambubachi Mela is celebrated here.
βœ… The festival marks the annual menstruation of the presiding Goddess.

#prelims
#art_and_culture

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❀1
πŸ”† E. V. Ramaswamy (Periyar) (1879–1973)

πŸ“ Who was Periyar?
βœ… E. V. Ramasamy was a noted social reformer, rationalist and philosopher from Tamil Nadu.
βœ… He was inspired by the constructive political programmes of Mahatma Gandhi in his early years.

πŸ“ Publications
βœ… Periyar founded and published the Tamil weekly Kudi Arasu.
βœ… The publication promoted social reform, rationalism and opposition to caste discrimination.

πŸ“ Activism
βœ… He actively participated in the Vaikom Satyagraha.
βœ… He also took part in the Non-Cooperation Movement.

πŸ“ Titles
βœ… He came to be known as β€œVaikom Veeran” for his role in the Vaikom movement.
βœ… His followers called him β€œPeriyar”, meaning β€œgreat man”.

πŸ“ Leadership and Political Role
βœ… In 1932, he co-founded the Self-Respect Socialist Party along with Singara Velu Chettiar.
βœ… He later became the leading figure of the Self-Respect Movement, which campaigned against caste hierarchy, patriarchy and social inequality.

πŸ“ Significance
βœ… Periyar played a major role in shaping the Dravidian movement in South India.
βœ… He advocated:
➑️ Social equality
➑️ Women’s rights
➑️ Rationalism
➑️ Abolition of caste discrimination

#history #prelims #mains

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❀3
πŸ”† Ozone Depleting Substances (ODSs)
πŸ“ Definition:
βœ… Chlorine, bromine, CFCs, carbon tetrachloride, halons, etc.

πŸ“ Potential Drivers of Ozone Hole over Antarctica:
1. Changes in Antarctic polar vortex
2. Changes in solar cycle
3. Increased atmospheric abundance of Chlorofluorocarbons (CFCs)

πŸ“ Polar Vortex
βœ… Stratospheric wind patterns with vast low-pressure areas and very cold air, more pronounced over the South Poles.
βœ… Leads to formation of Polar Stratospheric Clouds (PSCs).

πŸ“ Impact of Volcanic Eruptions on Ozone Layer:
βœ… Triggers massive stratospheric water vapor plume.
βœ… Injects large quantities of sulphur dioxide (facilitates chemical conversion of chlorine making it more reactive).
βœ… Contributes atmospheric bromine and hydrogen chloride.
βœ… Eruption particles provide surfaces for chemical reactions for ODSs.

πŸ“ PSCs (Polar Stratospheric Clouds):
βœ… Also known as nacreous clouds or mother of pearl.
βœ… Formed below -78Β°C and trap outgoing longwave radiation.

πŸ“ Location:
βœ… Hunga Tonga-Hunga Ha’apai, a submarine volcano in the Tongan archipelago located in the Southern Pacific Ocean, erupted in January 2022.

πŸ“ Ozone Layer Depletion Process (Infographic):
βœ… 1st step: UV rays split chlorine atom from CFC molecule.
βœ… 2nd step: Chlorine atom breaks up ozone molecule.
βœ… 3rd step: The chlorine molecule left behind creates chlorine monoxide and oxygen (O2).

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