OSSSC PEO & Odisha Police SI 2026 mocktest : Top 20 Important GK Questions

Key Point

Article 51A, contained within Part IV-A of the Indian Constitution, explicitly prescribes the Fundamental Duties of its citizens.

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• Historical Background: These duties were not part of the original Constitution drafted in 1950. They were inserted via the 42nd Amendment Act of 1976 during the National Emergency.
• Inspiration: The concept was borrowed from the constitution of the former USSR (Soviet Union).
• Swaran Singh Committee: The amendment was brought forward based on recommendations made by the Swaran Singh Committee earlier that year.
• The 11th Duty: Originally comprising 10 duties, an 11th obligation—making it the duty of a parent or guardian to provide education opportunities to their child between the ages of 6 and 14—was added by the 86th Constitutional Amendment Act of 2002.
• Legal Nature: Just like Directive Principles (DPSP), Fundamental Duties are non-justiciable. This means citizens cannot be directly taken to court by the judiciary for failing to perform them, though Parliament can enact specific laws to enforce them.

List of All 11 Fundamental Duties

According to Article 51A, it shall be the duty of every citizen of India:

1. To abide by the Constitution and respect its ideals and institutions, the National Flag and the National Anthem;
2. To cherish and follow the noble ideals which inspired our national struggle for freedom;
3. To uphold and protect the sovereignty, unity and integrity of India;
4. To defend the country and render national service when called upon to do so;
5. To promote harmony and the spirit of common brotherhood amongst all the people of India transcending religious, linguistic and regional or sectional diversities; to renounce practices derogatory to the dignity of women;
6. To value and preserve the rich heritage of our composite culture;
7. To protect and improve the natural environment including forests, lakes, rivers and wild life, and to have compassion for living creatures;
8. To develop the scientific temper, humanism and the spirit of inquiry and reform;
9. To safeguard public property and to abjure violence;
10. To strive towards excellence in all spheres of individual and collective activity so that the nation constantly rises to higher levels of endeavour and achievement;
11. Who is a parent or guardian to provide opportunities for education to his child or, as the case may be, ward between the age of six and fourteen years.

Key Point

Bakshi Jagabandhu (Jagabandhu Bidyadhara Mohapatra Bhramarabara Raya) was the legendary leader of the Paika Rebellion of 1817 in Odisha.

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• Who were the Paikas? They were the traditional landed militia of the Gajapati rulers of Odisha, who served as warriors during wartime and cultivated land during peacetime.
• The Leader’s Status: Bakshi Jagabandhu was the hereditary military chief (Commander-in-Chief) of the King of Khurda. He was stripped of his ancestral estate (Killa Rodanga) due to malicious revenue schemes by British officials, driving him to lead the uprising.
• Core Causes: The rebellion was triggered by extortionate British land revenue policies, the sudden imposition of the silver currency system over the traditional cowrie shell currency, and a steep rise in the price of salt.
• Course of Uprising: The rebellion began in March 1817 when the Paikas joined forces with the Kondh rebels from Ghumsur, attacking British symbols of authority like police stations, treasuries, and government buildings in Khurda and Puri.
• Historical Significance: Highly regarded as one of the earliest structured and widespread armed resistance movements against the British East India Company, it predated the famous Revolt of 1857 by four decades.

Key Point

The Mahanadi River is historically known as the “Sorrow of Odisha” due to the severe and devastating floods it regularly caused in the state’s delta region.

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• The Flood Menace: During the annual monsoon season, the massive volume of water originating from its upper catchment area would rush down into the flat plains of coastal Odisha, submerging agricultural lands, wiping out villages, and causing massive loss of life.
• The Taming of the River: To resolve this recurring disaster, the historic Hirakud Dam project was initiated. Prime Minister Jawaharlal Nehru laid its first concrete batch in 1948, creating one of the longest earthen dams in the world to successfully regulate the river’s flow.
• Origin and Course: The Mahanadi originates from the highlands of Chhattisgarh (Sihawa in the Dhamtari district) and flows eastwards through Chhattisgarh and Odisha before draining into the Bay of Bengal.
• Lifeline of the State: Today, the epithet is largely historical. Instead of being a “sorrow”, the managed Mahanadi acts as the vital lifeline of Odisha’s economy, supporting massive canal irrigation systems, industrial plants, and generating hydroelectric power.
• Similar Nicknames: In Indian geography, other rivers have earned similar titles based on their destructive natures—such as the Kosi River (“Sorrow of Bihar”) and the Damodar River (“Sorrow of Bengal”).

Other Nicknamed Rivers (“Sorrow of…”)

In Indian geography, several other major rivers earned historical nicknames due to their tendency to shift courses and cause catastrophic seasonal flooding.

• Kosi River (“Sorrow of Bihar”): Originating in the Himalayas, this river carries an immense load of silt. As it hits the flat plains of Bihar, the heavy silt deposition causes the riverbed to rise, forcing the river to frequently change its course. These sudden shifts lead to unpredictable, wide-scale destruction and severe floods across north Bihar almost every monsoon.
• Damodar River (“Sorrow of Bengal”): Flowing through Jharkhand and West Bengal, this river used to ravage the plains of lower Bengal with vicious flash floods. Because it cuts through the Chota Nagpur Plateau, monsoon rains caused it to overflow rapidly. The construction of multi-purpose dams under the Damodar Valley Corporation (DVC) in 1948 successfully tamed its destructive path.
• Brahmaputra River (“Sorrow of Assam”): This massive transboundary river experiences heavy discharge due to steep glacial melts and intense regional monsoon downpours. The geological instability of the Assam valley, combined with severe bank erosion, triggers massive floods annually, displacing millions of people and submerging wildlife habitats like Kaziranga National Park.
• China’s Yellow River (Huang He) – Global Context: Globally, the most famous equivalent is the Yellow River, long dubbed the “Sorrow of China.” It carries the highest silt load of any river on Earth. Over centuries, sediment buildup raised the river level well above the surrounding landscape, causing catastrophic dyke bursts that historically claimed millions of human lives.

Key Point

The Preamble to the Indian Constitution was amended by the 42nd Constitutional Amendment Act of 1976. This remains the only time the Preamble has ever been amended since the Constitution was adopted.

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• Three New Words: The amendment inserted three crucial words into the text of the Preamble: “Socialist”, “Secular”, and “Integrity”.
• Phrase Changes: The phrase “Sovereign Democratic Republic” was substituted with “Sovereign Socialist Secular Democratic Republic”, and “Unity of the Nation” was expanded to “Unity and Integrity of the Nation”.
• Historical Context: Passed during the national Emergency under the Prime Ministership of Indira Gandhi, the 42nd Amendment is widely referred to as the “Mini-Constitution” because it introduced sweeping revisions to various parts of the Constitution.
• Legal Validity: The power to amend the Preamble was upheld by the landmark Supreme Court ruling in the Kesavananda Bharati case (1973), which declared that the Preamble is a part of the Constitution and can be amended under Article 368, provided it does not alter the “Basic Structure” of the Constitution.

Key Point

The Hirakud Dam, the longest earthen dam in the world, is built across the Mahanadi River in Sambalpur, Odisha.

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• Massive Dimensions: The main dam has an impressive length of 4.8 km, but when combined with its flanking dykes, the entire structural length stretches across a staggering 25.8 km.
• The Solution to Flooding: As explored in Question 3, this multi-purpose river valley project was specifically engineered to control the devastating monsoon floods that historically ravaged the coastal delta region of Odisha.
• Historical Significance: It holds a proud place in India’s post-independence history. It was the first major multipurpose river valley project taken up after India gained independence, officially inaugurated by Prime Minister Jawaharlal Nehru in 1957.
• Economic Powerhouse: Beyond flood control, the Hirakud reservoir forms one of the largest artificial lakes in Asia. It supports extensive canal networks irrigating hundreds of thousands of hectares of farmland and generates essential hydroelectric power for the region.
• Tourist Viewpoints: The dam features two distinct structural watchtowers providing sweeping panoramic views of the reservoir—one named Gandhi Minar and the other named Nehru Minar.

Key Point

Dr. Kailash Nath Katju was the first Governor of Odisha after India’s independence, assuming office on August 15, 1947.

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• Tenure: He served as the Governor of the state from August 15, 1947, to June 20, 1948. His appointment marked a symbolic transition from the British colonial administration to independent self-governance.
• Historical Milestones: During his term, he closely monitored the crucial initial administrative adjustments and the assimilation of several regional princely states into the main province of Odisha.
• Distinguished Career: Apart from being an eminent legal scholar and freedom fighter, Dr. Katju later went on to serve in prominent national leadership roles, including the Union Home Minister and Union Defence Minister of India.
• Pre-Independence vs. Post-Independence: While Dr. Katju was the first governor of the *independent* era, Sir John Austen Hubback was the inaugural Governor of Odisha when it was originally formed as a separate British province on April 1, 1936.
• Immediate Predecessor and Successor: He took over from Sir Chandulal Madhavlal Trivedi (the last British-appointed governor) and was succeeded by another iconic freedom struggle leader, M. Asaf Ali, in 1948.

Key Point

The Tenth Schedule of the Indian Constitution contains provisions related to the Anti-Defection Law.

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• The 52nd Amendment: This schedule was not part of the original Constitution. It was inserted by the 52nd Constitutional Amendment Act of 1985 under the government of Prime Minister Rajiv Gandhi.
• The Purpose: The law was enacted to curb the rampant political defection of legislators (popularly known as the “Aaya Ram, Gaya Ram” culture) who changed parties for personal gains, thereby destabilising democratically elected governments.
• Grounds for Disqualification: A legislator can be disqualified under the Tenth Schedule if they voluntarily give up party membership, vote (or abstain from voting) against their party’s leadership direction, or if an independent candidate joins a political party after election.
• The 91st Amendment (2003): Originally, the law allowed a split in a party if one-third of the members defected. However, the 91st Amendment Act of 2003 tightened the law by stating that at least two-thirds of a party’s legislative strength must merge with another party to avoid disqualification.
• Deciding Authority: The power to decide on disqualification rests with the Chairman or Speaker of the respective House. While their decision was originally absolute, the Supreme Court ruled in the Kihoto Hollohan case (1992) that the Speaker’s decision is subject to judicial review.

Schedules of the Indian Constitution

The Indian Constitution originally featured 8 schedules when adopted in 1949. Over time, amendments expanded this number to 12 schedules. Below is a comprehensive overview of all the schedules:

Key Point

The famous Konark Sun Temple was built by King Narasimhadeva I of the Eastern Ganga Dynasty in the 13th century (around 1250 CE).

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• The Black Pagoda: European sailors historically referred to this monumental structure as the “Black Pagoda” because its dark, imposing magnetic silhouette served as an essential navigation landmark along the coast, contrasting with the “White Pagoda” (Jagannath Temple) in Puri.
• Architectural Design: Designed in the shape of a colossal processional chariot for the Sun God (Surya), the temple features 24 intricately carved stone wheels pulled by a team of 7 galloping horses, symbolizing the days of the week and hours of the day.
• The Master Architect: According to deep-seated Odia folklore, the legendary master architect Bisu Maharana headed the monumental construction, which was famously completed by his brilliant young son, Dharmapada.
• Global Recognition: Appreciated for its artistic genius, it was declared a UNESCO World Heritage Site in 1984. It is also a proud cultural icon featured prominently on the reverse side of India’s ₹10 currency note.
• Military Powerhouse: King Narasimhadeva I, often remembered as ‘Langula Narasimhadeva’, was a fierce military leader who successfully repelled major invasions from the Muslim rulers of Bengal, marking an era of regional pride and architectural triumph for Odisha.

Key Point

Chlorofluorocarbons (CFCs) are the gases primarily responsible for the depletion of the ozone layer.

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• The Chemical Mechanism: When CFCs escape into the atmosphere, they slowly drift up into the stratosphere. Intense ultraviolet (UV) radiation breaks them down, releasing highly reactive chlorine atoms. A single chlorine atom can break apart and destroy over 100,000 ozone molecules ($O_3$).
• Common Historical Sources: CFCs were widely manufactured throughout the 20th century for use as cooling propellants in air conditioners and refrigerators, aerosol spray cans, industrial solvents, and foam-blowing agents.
• Other Ozone-Depleting Substances (ODS): Beyond CFCs, other harmful gases include Halons (used in fire extinguishers), Carbon Tetrachloride, Methyl Chloroform, and Hydrochlorofluorocarbons (HCFCs).
• The Global Rescue Plan: In response to the growing “ozone hole” over Antarctica, the international community signed the landmark Montreal Protocol in 1987. This globally ratified treaty successfully mandated a progressive phase-out of the production and consumption of CFCs and other ODS.
• Current Recovery: Thanks to the global compliance with the Montreal Protocol, scientists estimate that the stratospheric ozone layer is steadily healing and is on track to recover to its 1980 levels over most of the globe by the mid-21st century.

Key Point

Article 40 of the Indian Constitution directs the State to organize Village Panchayats.

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• Constitutional Location: This article is a vital component of Part IV of the Constitution, which outlines the Directive Principles of State Policy (DPSP).
• Gandhian Philosophy: Article 40 is explicitly classified as a Gandhian Principle. Mahatma Gandhi strongly advocated for Gram Swaraj (village self-governance), viewing villages as the foundational building blocks of India’s democratic structure.
• The Direct Mandate: The text mandates that the State shall take steps to organize village panchayats and endow them with such powers and authority as may be necessary to enable them to function as units of self-government.
• Evolution to Legal Status: Initially, as a DPSP, organizing panchayats was non-justiciable and optional for states. This changed drastically with the passage of the landmark 73rd Constitutional Amendment Act of 1992, which constitutionalized Panchayati Raj Institutions (PRIs) by adding Part IX and the Eleventh Schedule to the Constitution.
• Related Key Article: Following the 73rd Amendment, Article 243B now strictly mandates the mandatory constitution of a three-tier Panchayati Raj system (Gram, Intermediate, and District levels) in all states with a population exceeding 20 lakhs.

Key Point

The Bhitarkanika National Park (and Wildlife Sanctuary) in Odisha is globally famous for its thriving population of Saltwater Crocodiles (Estuarine Crocodiles).

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• Guinness World Record: Bhitarkanika holds the unique distinction of housing some of the largest living saltwater crocodiles in the world, including a massive male measuring over 20 feet, which earned a spot in the Guinness Book of World Records.
• The Croc Breeding Success: In 1975, the Government of Odisha, in collaboration with the United Nations Development Programme (UNDP), launched a dedicated Saltwater Crocodile Conservation and Breeding Project at Dangmal within the sanctuary. This successfully rescued the species from the brink of local extinction.
• Rich Ecosystem: Located in the Kendrapara district, Bhitarkanika is India’s second-largest mangrove ecosystem. It is formed by the deltaic network of the Brahmani, Baitarani, Dhamra, and Pathsala rivers, providing a perfect natural estuarine habitat.
• Ramsar Site Recognition: Due to its immense ecological value, international biological diversity, and vital wetland systems, Bhitarkanika was designated as a Ramsar Site (Wetland of International Importance) in August 2002.
• Other Wildlife: Besides crocodiles, the park is an ecological haven for water monitor lizards, Indian pythons, wild boars, spotted deer, and more than 215 species of migratory and resident birds. It also lies adjacent to Gahirmatha Marine Sanctuary, the world’s largest nesting beach for Olive Ridley sea turtles.

Major National Parks and Wildlife Sanctuaries in Odisha

Odisha boasts a diverse network of protected areas, ranging from dense mangrove forests to elevated hill ranges. Below are the most significant national parks and wildlife sanctuaries in the state:

• Similipal National Park & Tiger Reserve (Mayurbhanj): One of India’s earliest designated tiger reserves and a part of the UNESCO World Network of Biosphere Reserves. It is famous for its sprawling sal forests, majestic waterfalls (Barehipani and Joranda), Asiatic elephants, and rare melanistic (black) tigers.
• Bhitarkanika National Park (Kendrapara): As covered above, India’s second-largest mangrove ecosystem. It serves as the primary habitat for massive saltwater crocodiles and a sprawling nesting ground for residential water birds.
• Gahirmatha Marine Sanctuary (Kendrapara): Adjoining Bhitarkanika, this is the world’s largest rookery (nesting beach) for the endangered Olive Ridley Sea Turtles. Millions of turtles migrate here annually from the Pacific for mass nesting (Arribada).
• Chilika Wildlife Sanctuary / Nalabana Bird Sanctuary (Puri, Khurda, Ganjam): Chilika is Asia’s largest brackish water lagoon and a vital Ramsar site. Nalabana Island, located inside the lagoon, acts as a major refuge for hundreds of thousands of migratory birds arriving from Siberia and Central Asia during winter. It is also famous for the rare Irrawaddy Dolphins.
• Satkosia Gorge Sanctuary & Tiger Reserve (Angul, Cuttack, Nayagarh, Boudh): Carved out by the mighty Mahanadi River flowing through a stunning 22 km long gorge. It is an exceptional ecosystem known for both freshwater crocodiles (Muggers) and endangered Gharials, alongside elephants and tigers.
• Debrigarh Wildlife Sanctuary (Sambalpur/Bargarh): Located adjacent to the Hirakud Reservoir. It is renowned for its high density of easily visible wildlife like leopards, Indian bison (Gaur), four-horned antelopes (Chousingha), and sambar deer. Historically, freedom fighter Veer Surendra Sai made his base here during the 1857 uprising.
• Nandankanan Wildlife Sanctuary & Zoological Park (Bhubaneswar): Nestled in the environs of the Chandaka forest. It achieved global fame as the first zoo in the world to breed white tigers and captive gharials successfully.
• Chandaka-Dampara Elephant Sanctuary (Khurda/Cuttack): Located right on the outskirts of the capital city, Bhubaneswar. It was specifically designated to provide a safe, dedicated migratory corridor and habitat for wild Asiatic elephants.

Key Point

The historic Kalinga War was fought in 261 BC (or BCE) during the 8th regnal year of the Mauryan Emperor Ashoka.

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• The Location: The battle took place on the plains of Kalinga (modern-day Odisha), traditionally believed to be along the banks of the Dhauli Hills near the Daya River, just outside present-day Bhubaneswar.
• Primary Historical Source: Detailed accounts of the war come directly from Ashoka himself, documented on his Major Rock Edict XIII. The edict explicitly describes the colossal suffering, noting that 100,000 people were slain, 150,000 were captured, and many times that number perished from aftermath complications.
• The Great Transformation: The sheer scale of bloodshed, misery, and destruction deeply moved and filled Emperor Ashoka with profound remorse (Anushodhana). As a direct consequence, he completely abandoned the policy of physical conquest through war (Bherighosha) in favour of cultural conquest through righteousness (Dhammaghosha).
• Embracing Buddhism: Following the psychological shock of the war, Ashoka converted to Buddhism under the guidance of the Buddhist monk Upagupta. He subsequently dedicated his empire’s resources to spreading the messages of peace, non-violence, and moral codes across Asia.
• Geopolitical Landscape: Prior to the war, Kalinga was an independent, wealthy maritime and military power that controlled vital trade routes to Southeast Asia. Its resistance was the last major hurdle preventing the Maurya Empire from establishing total hegemony over the Indian subcontinent.

Key Point

A barometer is the instrument used to measure atmospheric pressure.

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• The Inventor: The mercury barometer was invented by the Italian physicist and mathematician Evangelista Torricelli in the year 1643.
• How It Works: It works by balancing the weight of mercury in a glass tube against the weight of the air in the atmosphere. As the atmospheric pressure changes, the level of mercury inside the tube rises or falls.
• Types of Barometers:
  • Mercury Barometer: The classic design using a liquid metal tube; highly accurate but delicate.
  • Aneroid Barometer: A non-liquid alternative that uses a small, flexible metal box called an aneroid capsule. It expands or contracts with pressure shifts and is widely used in portable devices and aviation altimeters.
  • Digital/Electronic Barometer: Uses electrical sensors to track structural pressure differences and is standard in modern weather stations and smartphones.
• Units of Measurement: Atmospheric pressure measured by barometers is typically registered in atmospheres (atm), millibars (mb), pascals/hectopascals (Pa/hPa), or inches/millimeters of mercury (inHg/mmHg).
• Weather Forecasting Value: Barometers are critical for forecasting weather. A sudden, sharp drop in barometric pressure generally indicates an approaching low-pressure system, signaling storms, rain, or heavy winds. Conversely, a steady rise in pressure indicates clearing skies and fair weather.

Common Scientific Measuring Instruments

In scientific studies and competitive exams, questions frequently appear regarding specialized instruments used to measure environmental, physical, and meteorological phenomena. Below is a comprehensive overview of the most common devices:

Key Point

The Governor of the respective state appoints the Chairman and members of the State Public Service Commission (SPSC).

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• Constitutional Provisions: The provisions regarding the composition, appointment, and removal of members of Public Service Commissions (both UPSC and SPSC) are detailed in Part XIV of the Constitution under Articles 315 to 323.
• The Appointment Mandate: According to Article 316, the Chairman and other members of an SPSC are appointed by the Governor. However, if it is a Joint State Public Service Commission (JSPSC) serving two or more states, they are appointed by the President of India.
• The Removal Exception (Crucial Detail): Although the Governor appoints the SPSC Chairman and members, they can only be removed by the President of India (under Article 317) on grounds of misbehaviour (after an inquiry by the Supreme Court), insolvency, infirmity of mind or body, or engagement in paid employment outside their duties. The Governor only holds the power to suspend them during an ongoing inquiry.
• Term of Office: A member of an SPSC holds office for a term of 6 years or until they attain the age of 62 years, whichever is earlier (compared to 65 years for UPSC members).
• Independence of the Commission: To ensure impartial functioning, the Chairman of an SPSC is eligible for appointment as the Chairman or member of the UPSC, or as the Chairman of any other SPSC, but is strictly barred from any other employment under the Government of India or any State Government after retirement.

Comparison: UPSC vs. SPSC vs. JSPSC

To ensure a completely clear understanding of how public service commissions operate in India, it is highly useful to contrast the differences between the Union, State, and Joint State commissions:

Key Point

Chilika Lake primarily receives its freshwater from the distributaries (branches) of the Mahanadi River, most notably the Daya River and the Bhargavi River.

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• The River System: The Mahanadi River trifurcates (splits into three branches) near Cuttack. Its southern branches flow down the deltaic plain and further split into multiple distributaries that empty directly into the northern part of Chilika Lake.
• The Dominant Contributor: The Daya River is the most prominent branch feeding the lagoon. In fact, Chilika is geographically defined as sitting right at the mouth of the Daya River where it merges into the Bay of Bengal.
• Freshwater Volume: The Mahanadi river branches provide a massive 61% of the total surface freshwater inflow into Chilika Lake. The remaining 39% comes from non-perennial streams and rivulets flowing out of the Eastern Ghats on the western catchment side (such as the Malaguni, Kansari, and Kusumi rivers).
• Creating the Brackish Nature: This massive seasonal influx of freshwater from the northern Mahanadi branches mixes with the salty tidal waters pushing in from the Bay of Bengal on the eastern side. This intersection creates a dynamic, highly productive brackish water ecotone that varies heavily in salinity from season to season.
• Siltation Challenge: Because these river branches carry heavy sediment loads from the upper Mahanadi basin during the monsoons, they deposit millions of tons of silt into the lagoon annually. Managing this siltation is one of the primary conservation duties of the Chilika Development Authority.

Key Point

The Fundamental Rights guaranteed under Article 20 and Article 21 of the Indian Constitution cannot be suspended even during a National Emergency.

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• What these Articles Protect:
  • Article 20: Protection in respect of conviction for offences (safeguards against ex-post-facto laws, double jeopardy, and self-incrimination).
  • Article 21: Protection of life and personal liberty (guarantees that no person shall be deprived of their life or personal liberty except according to procedure established by law).
• The 44th Amendment Act (1978): This protection was introduced by the 44th Amendment Act under the Janata Party government. It was enacted to prevent the executive overreach witnessed during the 1975 National Emergency, explicitly restricting the President’s power under Article 359 to suspend these two specific rights.
• The Contrast with Article 19: In contrast, the six freedoms under Article 19 (speech, assembly, movement, etc.) are automatically suspended under Article 358, but only if the National Emergency is declared on the grounds of war or external aggression (External Emergency). If the emergency is declared due to armed rebellion (Internal Emergency), Article 19 cannot be suspended.
• Enforcement Status: Because Articles 20 and 21 remain alive, citizens retain the right to approach the Supreme Court (Article 32) or High Courts (Article 226) for a writ of Habeas Corpus if they are unlawfully detained or if their life is threatened by state machinery during an emergency.

Key Point

The Utkal Sammilani (Utkal Union Conference) was founded in 1903 by the legendary leader Madhusudan Das, affectionately revered as “Utkal Gouraba” (The Pride of Odisha).

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• The Primary Objective: At the turn of the 20th century, Odia-speaking populations were administratively fragmented across the Bengal, Madras, and Central Presidencies. Madhusudan Das created this social-political organization to launch a systematic campaign for the linguistic and cultural unification of Odisha.
• The Historic First Session: The inaugural session of Utkal Sammilani was held on December 30–31, 1903, at Cuttack. While Madhusudan Das was the primary driver and secretary, the conference was officially presided over by Maharaja Sriram Chandra Bhanja Deo of Mayurbhanj.
• Architect of Modern Odisha: The continuous baseline agitation and consensus built by the Sammilani served as the foundation for the eventual creation of a separate state of Odisha on **April 1, 1936** (celebrated annually as Utkal Divas). This marked the first time an Indian state was organized strictly on a linguistic basis.
• Mass Integration: What made the organization unique was its non-political, inclusive character during its initial decades. It successfully brought regional princely kings, zamindars, middle-class intellectuals, and rural commoners together onto a single common platform.
• Prominent Co-Founders: Along with Madhusudan Das, other foundational stalwarts who actively shaped the organization included legendary writer Fakir Mohan Senapati, poet Radhanath Ray, and iconic social reformer Utkalmani Gopabandhu Das.

Key Point

The protective Ozone Layer is located within the Stratosphere, the second major layer of Earth’s atmosphere.

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• Altitude and Concentration: The ozone layer (or ozonosphere) is primarily concentrated in the lower portion of the stratosphere, roughly 15 to 35 kilometers (9 to 22 miles) above the Earth’s surface.
• The Shielding Mechanism: It plays an indispensable role for terrestrial life by absorbing roughly 97% to 99% of the sun’s highly harmful, high-frequency ultraviolet (UV-B and UV-C) radiation. Without this shield, increased UV exposure would lead to widespread skin cancers, cataracts, and severe disruptions to marine and agricultural ecosystems.
• Thermal Impact: Unlike the troposphere below it (where temperature decreases with altitude), the stratosphere experiences a **temperature increase with altitude**. This unique warming effect is caused directly by the ozone molecules absorbing solar UV radiation and converting it into thermal energy.
• The Connection to Question 9: As explored earlier, synthetic chemical gases like Chlorofluorocarbons (CFCs) travel up into this specific layer, releasing chlorine atoms under UV light that actively break down ozone molecules, resulting in the thinning of this vital shield.
• Measurement Unit: The total concentration and thickness of ozone overhead in the stratosphere is measured using a specialized scientific metric called the Dobson Unit (DU).

Key Point

The minimum age required for election as a member of the Rajya Sabha (Council of States) is 30 years.

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• Constitutional Provision: The qualifications for becoming a Member of Parliament (MP) are explicitly laid down in Article 84 of the Indian Constitution.
• Age Differences in Houses: While the upper house (Rajya Sabha) requires an individual to be at least 30 years old, the lower house of Parliament (Lok Sabha) allows a minimum age of 25 years. Because of this higher age threshold, the Rajya Sabha is historically referred to as the “House of Elders”.
• Other Key Qualifications: To be eligible for the Rajya Sabha, a person must also be a citizen of India and make an oath or affirmation before the person authorized by the Election Commission. Furthermore, they must possess any additional qualifications prescribed by Parliament under the Representation of the People Act, 1951.
• Tenure and Retirals: Unlike the Lok Sabha, the Rajya Sabha is a permanent body and is not subject to dissolution. However, each member is elected for a term of 6 years, with one-third of its members retiring every two years.
• Age limits for other offices:
  • 21 years: Minimum age to contest local body elections (Panchayats and Municipalities).
  • 25 years: Minimum age to become an MLA (State Legislative Assembly) or the Prime Minister/Chief Minister.
  • 35 years: Minimum age required to become the President, Vice-President, or a State Governor.

Key Point

According to the official biennial India State of Forest Reports (ISFR), Kandhamal is the leading district in Odisha, securing the top spot for both the highest percentage of forest cover (~67.3%) and the largest total forest area (~5,403 sq km).

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• The Top Green Districts: Behind Kandhamal, districts like Sundargarh and Mayurbhanj also possess extensive structural forest cover areas, while Gajapati ranks near the top in terms of green canopy percentage relative to its small geographical size.
• The Lowest Cover: On the opposite side of the spectrum, coastal plains districts like Bhadrak, Jagatsinghpur, and Puri record the lowest overall forest cover in the state due to flat maritime geography and heavy agricultural/urban development.
• State Level Overview: As per the Forest Survey of India (FSI), Odisha features a massive total forest cover area of 52,433.56 sq km, which translates into roughly 33.67% of the state’s total geographical area.
• National Ranking & Gains: Odisha has consistently been among India’s top performing states for afforestation. It recently ranked 3rd nationwide in maximum tree and forest cover expansion, adding hundreds of square kilometers of fresh green cover within successive assessment cycles through community-backed plantation programs like Vana Samrakshan Samitees.
• Dense Forest Pockets: A large volume of Kandhamal’s premium canopy index falls under the categories of Very Dense Forest (VDF) and Moderately Dense Forest (MDF), which are critical for sustaining regional wildlife habitats, water tables, and climate balance across the Eastern Ghats.