News 1 :SC status only for Hindus, Buddhists, Sikhs: top court
Conversion to any other religion will lead to complete loss of Scheduled Caste status, regardless of birth, says Supreme Court Bench as it invokes Clause 3 of Constitution (Scheduled Castes) Order
Preliminary Facts (For Mains Answer Introduction)
- Core Judgment: The Supreme Court has held that a person professing any religion other than Hinduism, Buddhism, or Sikhism cannot be considered a member of a Scheduled Caste (SC) community. Conversion to any other religion results in “immediate and complete loss of Scheduled Caste status from the moment of conversion, regardless of birth.”
- Legal Basis: The Bench of Justices Prashant Kumar Mishra and Manmohan invoked Clause 3 of the Constitution (Scheduled Castes) Order, 1950, which mandates that “no person who professes a religion different from Hinduism shall be deemed to be a member of a Scheduled Caste.” Sikhism was added in 1956, and Buddhism in 1990.
- Case Background: The court was hearing an appeal by Chinthada Anand, a Hindu-Madiga (SC) who converted to Christianity to become a pastor. He had filed a case under the SC/ST (Prevention of Atrocities) Act, 1989, alleging caste-based attacks. The Andhra Pradesh High Court had quashed the proceedings, holding that as a Christian, he could not claim protection under the Act since caste is not recognized in Christianity.
- Key Observation: The court stated that the term “profess” in Clause 3 connotes a public declaration of faith. A person cannot simultaneously profess a religion outside the three specified and claim SC status. The two positions are “mutually exclusive and contrary to the Constitutional scheme.”
- Re-conversion Conditions: For those claiming re-conversion to Hinduism, Sikhism, or Buddhism, the court laid down three cumulative conditions:
- Clear proof of earlier caste.
- Credible evidence of bona fide reconversion to the original religion.
- Satisfactory evidence of acceptance and assimilation by members of the original caste.
- Distinction from Scheduled Tribes: The court noted that the Constitution (Scheduled Tribes) Order, 1950 does not prescribe religion-based exclusion, unlike the SC Order. A person can claim ST benefits only if they continue to belong to that particular tribe “in substance.”
Prelims 360
CONSTITUTIONAL SAFEGUARDS FOR SCs
1. Equality & Non-Discrimination
- Article 14 → Equality before law
- Article 15(1) → No discrimination on caste
- Article 15(4) → Special provisions for SCs (reservation in education)
- Article 16(4) → Reservation in public employment
👉 Key idea: Positive discrimination allowed
2. Abolition of Untouchability
- Article 17 → Abolishes untouchability
- Enforceable with penalties
3. Social & Economic Protection
- Article 23 → Prohibits forced labour (important for SC protection)
- Article 24 → Prohibits child labour in hazardous jobs
4. Educational & Cultural Safeguards
- Article 46 (DPSP)
→ Promote educational & economic interests of SCs
→ Protect from social injustice & exploitation
5. Political Representation
- Article 330 & 332 → Reservation in:
- Lok Sabha
- State Legislative Assemblies
- Article 334 → Time period (extended periodically by amendments)
6. Services & Administration
- Article 335 → Claims of SCs in public employment
7. Special Constitutional Bodies
- Article 338 → National Commission for Scheduled Castes
- Investigates safeguards
- Reports to President
8. Definition
- Article 341 → President notifies SC list (state-wise)
🟡 STATUTORY SAFEGUARDS FOR SCs
1. Protection from Atrocities
- Scheduled Castes and Scheduled Tribes (Prevention of Atrocities) Act, 1989
- Prevents caste-based crimes
- Special courts for speedy trial
- Strict punishments
👉 Very important for Prelims
2. Abolition of Untouchability Enforcement
- Protection of Civil Rights Act, 1955
- Penalizes practice of untouchability
- Earlier called “Untouchability Offences Act”
3. Manual Scavenging Prohibition
- Prohibition of Employment as Manual Scavengers and their Rehabilitation Act, 2013
- Bans manual scavenging
- Provides rehabilitation
4. Employment Safeguards
- Reservation policies implemented through laws & rules (not a single act)
News 2 : Assam floats tender for satellites to monitor floods
Chief Minister Sarma announced the project in the 2025-26 State Budget; The procurement is for at least five satellites in low-earth orbit
Preliminary Facts (For Mains Answer Introduction)
- Pioneering Initiative: Assam has become the first Indian State to float a tender for a group of earth-observation satellites, marking a significant shift towards state-level ownership of space-based assets for governance and disaster management.
- Project Name & Issuing Authority: The mission, named AssamSAT, was announced by Chief Minister Himanta Biswa Sarma in the 2025-26 State Budget. The Assam Science Technology and Environment Council issued an Expression of Interest (EOI) on March 16, 2026, inviting private aerospace companies to design, build, launch, operate, and eventually transfer the satellites to State ownership.
- Technical Specifications: The procurement is structured around at least five satellites in low-earth orbit (LEO) . The EOI does not specify whether they will operate separately or as a constellation, nor does it detail the sensors. However, given Assam’s cloudy weather for nearly half the year, the satellites may carry synthetic aperture radars (SAR) , which can penetrate clouds and darkness.
- Core Objectives:
- Flood Management: Strengthen disaster response along the flood-prone Brahmaputra valley.
- Border Surveillance: Survey the State’s borders, particularly the chars (seasonally inundated river islands) along the Bangladesh border, where conventional fencing is inadequate.
- Anti-Infiltration: Support the Chief Minister’s stated goal of an “infiltration-free Assam” through real-time satellite monitoring.
- Extended Mandate: Beyond floods and borders, the satellites will also be used to track drug-trafficking routes and monitor poaching in Kaziranga National Park.
- Strategic Context: Assam sits close to the Siliguri Corridor (the “chicken’s neck”), a strategically sensitive strip of land connecting Northeast India to the rest of the country. The satellite project aligns with broader state and central security priorities.
Prelims 360
ASSAM FLOODS – OVERVIEW
- Assam faces annual floods mainly due to the Brahmaputra River and its tributaries
- Occurs during South-West Monsoon (June–September)
- Considered one of India’s most flood-prone states
CAUSES OF ASSAM FLOODS
1. Natural Causes
- Heavy monsoon rainfall
- Glacial melt in Himalayas
- River carrying high silt load → reduces depth
- Frequent river channel shifting (braided river system)
2. Geographical Factors
- Assam is a low-lying floodplain
- Surrounded by hills → water flows into plains
- Presence of wetlands like beels
3. Human-Induced Causes
- Deforestation in catchment areas
- Encroachment of wetlands
- Poor drainage in urban areas
- Weak embankments
🐘 UNIQUE FEATURE (IMPORTANT FOR PRELIMS)
- Floods affect Kaziranga National Park
- Animals migrate to higher areas → road accidents inc
CHICKEN’S NECK CORRIDOR
📍 What is it?
- A narrow stretch of land connecting mainland India with the North-Eastern states
- Officially called the Siliguri Corridor
📌 LOCATION
- Situated in West Bengal
- Near the city of Siliguri
- Width: ~20–22 km (narrowest point)
🌍 BOUNDARIES
| Direction | Country |
| West | Nepal |
| East | Bangladesh |
| North | Bhutan |
| South | Rest of India |
INDIAN STATES BORDERING THE CHICKEN’S NECK CORRIDOR
The Siliguri Corridor lies mainly in West Bengal, but it connects to and is influenced by nearby states.
✅ Directly Associated State
- West Bengal
👉 The corridor is entirely located within this state
✅ Indirectly Connected / Border Influence
- Assam
→ Major gateway state after the corridor - Sikkim
→ Located just north of the corridor, strategically important - Bihar
→ Lies to the west of the corridor, near its entry point
📌 IMPORTANT CLARIFICATION (VERY IMPORTANT FOR PRELIMS)
- ❗ The corridor is NOT shared by multiple states
- ❗ It lies only in West Bengal
- ❗ Other states are geographically close or strategically linked, but do not contain the corridor
🔐 STRATEGIC IMPORTANCE
1. National Security
- Only land link to 8 North-Eastern states
- Vulnerable in case of:
- Conflict with China
- Internal disturbances
New 3 : China maps the ocean floor as it prepares for submarine warfare with U.S.
Dong Fang Hong 3, a deep-sea research vessel, docks at a pier in Qingdao, Shandong province, China.
Preliminary Facts (For Mains Answer Introduction)
- Massive Undersea Campaign: China is conducting a vast undersea mapping and monitoring operation across the Pacific, Indian, and Arctic oceans, building detailed knowledge of marine conditions that naval experts say would be crucial for waging submarine warfare against the United States and its allies.
- Key Vessel: The Dong Fang Hong 3, a deep-sea research vessel operated by Ocean University of China, spent 2024 and 2025 sailing back and forth in the seas near Taiwan, the U.S. stronghold of Guam, and around strategic stretches of the Indian Ocean. In October 2024, it checked on powerful Chinese ocean sensors capable of identifying undersea objects near Japan, and revisited the same area in May 2025. In March 2025, it criss-crossed waters between Sri Lanka and Indonesia, covering approaches to the Malacca Strait—a critical chokepoint for global maritime commerce.
- Scale of Operation: The effort involves dozens of research vessels and hundreds of sensors. Reuters analyzed movement data of 42 research vessels active in the Pacific, Indian, or Arctic oceans over five years using a ship-tracking platform built by Starboard Maritime Intelligence.
- Mapping Methodology: Research vessels map the sea floor by traveling back and forth in tight lines. The tracking data shows this type of movement by Chinese vessels across large sections of the three oceans.
- Military Significance: According to nine naval-warfare experts who reviewed Reuters’ findings, while the research has civilian purposes (surveying fishing grounds, mineral prospecting areas), it also serves a military objective. The data enables submarine navigation, concealment, and positioning of seabed sensors or weapons.
- Focus Areas: China’s seabed surveying effort is concentrated on militarily important waters around the Philippines, near Guam and Hawaii, and near U.S. military facilities on Wake Atoll in the North Pacific.
Prelims 360
SEA FLOOR MAPPING
📌 What is Sea Floor Mapping?
- It is the process of measuring and charting the depth, shape, and features of the ocean floor
- Also called Bathymetric Mapping
👉 Related concept: Bathymetry
METHODS OF SEA FLOOR MAPPING
1. SONAR (Most Important)
👉 Sound Navigation and Ranging
Types:
- Single Beam Sonar
- Multibeam Sonar (high precision)
2. Satellite Altimetry
- Measures sea surface height
- Infers underwater features
3. Autonomous Underwater Vehicles (AUVs)
- Robotic devices for deep-sea mapping
4. LIDAR (Coastal Areas)
- Uses laser pulses
OCEAN FLOOR FEATURES IN THE PACIFIC OCEAN
The Pacific Ocean has the most complex and dynamic ocean floor due to intense tectonic activity.
🗻 1. MID-OCEAN RIDGES
- Underwater mountain chains formed by divergent plate boundaries
Key Example:
- East Pacific Rise
- One of the fastest spreading ridges
- Creates new oceanic crust
🌋 2. DEEP SEA TRENCHES
- Deepest parts of the ocean
- Formed at convergent plate boundaries
Important Trenches:
- Mariana Trench
- Deepest point: Challenger Deep
- Tonga Trench
- Philippine Trench
🌋 3. VOLCANIC ISLAND ARCS
- Formed due to subduction of oceanic plates
Examples:
- Japan Islands
- Philippines
🌊 4. ABYSSAL PLAINS
- Flat, deep ocean floor regions
- Covered with fine sediments
- Less extensive in Pacific (due to tectonic activity)
🌋 5. SEAMOUNTS & GUYOTS
- Seamounts → underwater volcanoes
- Guyots → flat-topped seamounts
Example:
- Emperor Seamount Chain
🌋 6. HOTSPOT VOLCANISM
- Caused by mantle plumes (not plate boundaries)
Example:
- Hawaiian Islands
- Shows plate movement over hotspot
🔥 7. RING OF FIRE (VERY IMPORTANT)
- Zone of intense:
- Earthquakes
- Volcanoes
👉 Known as Pacific Ring of Fire
