✅ The Great Bath was discovered at Mohenjodaro in present-day Pakistan. It is one of the earliest public water tanks in the ancient world, measuring 12×7 metres.

✅ Lothal in Gujarat was the port city of the Indus Valley Civilization. It had a dockyard and is considered the world’s earliest known dock. Lothal is the only IVC site in India with a dockyard.

✅ Rishabhanatha (Adinath) was the first Tirthankara (Ford-maker) of Jainism. Mahavira was the 24th and last Tirthankara. The word “Jina” means conqueror — one who has conquered inner passions.

✅ Rock Edict XIII of Ashoka describes the horrors of the Kalinga War (261 BCE) which led to his transformation. Around 100,000 people were killed and 150,000 deported. After Kalinga, Ashoka embraced Buddhism.

✅ Sulh-i-Kul (Universal Peace or “peace with all”) was Akbar’s policy of religious tolerance and harmony. It formed the foundation of his political philosophy and the Din-i-Ilahi movement.

✅ The Khajuraho temples of Madhya Pradesh were built by the Chandela dynasty between 950–1050 CE. They are UNESCO World Heritage Sites, known for their nagara-style architecture and erotic sculptures.

✅ The Jallianwala Bagh Massacre occurred on 13 April 1919 (Baisakhi Day) in Amritsar. General Dyer ordered firing on unarmed civilians. At least 379 people were killed officially (actual numbers higher). It shocked the nation.

✅ Bal Gangadhar Tilak gave the famous slogan “Swaraj is my birthright and I shall have it.” He was known as “Lokmanya.” He started the Ganesh Festival (1893) and Shivaji Festival (1896) to inspire nationalism.

✅ Mahatma Gandhi’s Dandi March (Salt March) began on 12 March 1930 from Sabarmati Ashram to Dandi (241 miles) to protest the British Salt Tax. It launched the Civil Disobedience Movement.

✅ Jawaharlal Nehru was born on November 14, 1889. This day is celebrated as Children’s Day (Bal Diwas) in India in his memory, as he loved children. He was called “Chacha Nehru” by children.

✅ Rabindranath Tagore renounced his Knighthood in 1919 to protest the Jallianwala Bagh Massacre. He received the Nobel Prize in Literature in 1913 for Gitanjali — the first Asian to win a Nobel Prize.

✅ Bhagat Singh, Rajguru, and Sukhdev were hanged on 23 March 1931 at Lahore Central Jail. This day is observed as Martyrs’ Day (Shaheed Diwas) in India. Bhagat Singh was 23 years old at the time.

✅ Kosi River is called the “Sorrow of Bihar” due to frequent catastrophic floods. It has shifted its course over 120 km in the past 250 years. The Damodar was previously called the “Sorrow of Bengal.”

✅ Gujarat has the longest coastline among Indian states (~1,600 km). The total coastline of India (including islands) is 7,516 km, while the mainland coastline is about 6,100 km.

✅ Godavari is called “Vridha Ganga” and “Dakshin Ganga.” It is the longest river in peninsular India (1,465 km). It originates at Trimbakeshwar, Nasik, Maharashtra and falls into the Bay of Bengal.

✅ The Brahmaputra is called Yarlung Tsangpo / Tsangpo in Tibet. In Arunachal Pradesh (India) it is called Siang/Dihang. In Bangladesh it is called Jamuna. It is a trans-boundary river.

✅ Nathu La Pass in Sikkim connects India with Tibet (China). It is at 4,310 m above sea level and is part of the ancient Silk Road. It was reopened for trade in 2006 after 44 years.

✅ The Nilgiri Hills are the meeting point of the Western and Eastern Ghats in South India. The Nilgiris are spread across Tamil Nadu, Kerala, and Karnataka. Ooty (Udhagamandalam) is the famous hill station here.

✅ Ahmedabad is situated on the banks of the Sabarmati River in Gujarat. Mahatma Gandhi’s Sabarmati Ashram is also located here. Surat is on the Tapti, Vadodara on the Vishwamitri.

✅ The Farakka Barrage on the Ganga in West Bengal was built to divert water into the Hooghly River to flush accumulated silt and save Kolkata Port. Construction started 1961, completed 1975.

✅ Bengaluru (Bangalore) is known as the Silicon Valley of India. It is the IT hub of India, home to companies like Infosys, Wipro, and hundreds of tech startups. Karnataka is also called the Silicon State of India.

✅ Hirakud Dam (across Mahanadi, Odisha) is the longest man-made dam in the world (~26 km). Tehri Dam is the highest dam in India (261 m). Bhakra Dam (on Sutlej) is the second highest in India (225 m).

✅ India shares its longest international boundary with Bangladesh (~4,156 km). China has the second longest (~3,488 km), followed by Pakistan (~3,323 km) and Nepal (~1,751 km).

✅ The President of India is the constitutional/nominal head (de jure). The Prime Minister is the de facto (real) executive authority. The President is elected indirectly by an Electoral College.

✅ Article 17 of the Indian Constitution abolishes untouchability and prohibits its practice in any form. Untouchability Act (1955) was passed to enforce this. Article 15 prohibits discrimination on grounds of religion, race, caste, sex, or place of birth.

✅ One-third of Rajya Sabha members retire every two years. Each member has a 6-year term. Maximum strength: 250 (238 elected + 12 nominated). The Vice President is the ex-officio Chairman of Rajya Sabha.

✅ The maximum permissible gap between two sessions of Parliament is 6 months as per the Constitution. Parliament usually holds three sessions: Budget (Feb–May), Monsoon (Jul–Aug), and Winter (Nov–Dec).

✅ Zero Hour starts at 12 noon, immediately after the Question Hour. Members raise matters of urgent public importance without prior notice. It was introduced in 1962 — a unique Indian parliamentary practice.

✅ Article 21 protects the Right to Life and Personal Liberty — “No person shall be deprived of his life or personal liberty except according to procedure established by law.” The Supreme Court has expanded it to include right to privacy, shelter, education, etc.

✅ Part IV (Articles 36–51) of the Constitution deals with Directive Principles of State Policy (DPSP). Part III = Fundamental Rights; Part IV-A = Fundamental Duties (Articles 51A); Part II = Citizenship.

✅ The voting age in India is 18 years, as per Article 326 of the Constitution (universal adult suffrage). It was reduced from 21 to 18 years by the 61st Constitutional Amendment (1988).

✅ The President declares National Emergency under Article 352 on the written advice of the Union Cabinet. It must be approved by Parliament within 1 month. India has had 3 National Emergencies: 1962, 1971, and 1975.

✅ Bharatanatyam is one of the oldest classical dance forms of India, originating in Tamil Nadu. It evolved from Sadir Attam in temples. Rukmini Devi Arundale revived it in the 20th century.

✅ Kuchipudi is a classical dance-drama from Andhra Pradesh. It originated in the village of Kuchipudi in Krishna district. Other classical dance forms: Kathakali (Kerala), Odissi (Odisha), Kathak (North India).

✅ RAM = Random Access Memory. It is a volatile memory — data is lost when power is off. ROM (Read Only Memory) is non-volatile. RAM is used as the working memory of a computer while programs run.

✅ MS Excel is a spreadsheet application (part of Microsoft Office), NOT a web browser. Chrome, Firefox, and Edge are web browsers used to access the internet. Other browsers include Safari, Opera, and Brave.

✅ Ctrl + C = Copy. Common shortcuts: Ctrl+X = Cut, Ctrl+V = Paste, Ctrl+Z = Undo, Ctrl+S = Save, Ctrl+A = Select All, Ctrl+P = Print, Alt+F4 = Close window.

✅ The Convention on Biological Diversity (CBD) was adopted at the Rio Earth Summit, 1992 in Brazil. The Stockholm Conference (1972) led to creation of UNEP. The Paris Agreement (2015) deals with climate change.

✅ Kaziranga National Park in Assam is home to the Indian One-Horned Rhinoceros and is a UNESCO World Heritage Site. It also has the highest density of tigers. Gir (Gujarat) has Asiatic Lions; Jim Corbett has tigers.

✅ Sundarbans in West Bengal (and Bangladesh) is the world’s largest mangrove forest and is famous for Royal Bengal Tigers. It was declared a UNESCO World Heritage Site in 1987. The Sundarbans delta is formed by Ganga and Brahmaputra.

✅ The Chipko Movement (1973) was an eco-conservation movement in Uttarakhand where villagers hugged trees to prevent deforestation. Led by Sunderlal Bahuguna and Chandi Prasad Bhatt, it became a global symbol of environmental activism.

✅ Pongal is the harvest festival of Tamil Nadu, celebrated in January (Makar Sankranti period). It is a 4-day festival of thanksgiving to the Sun, cattle, and nature. “Pongal” means “to boil/overflow” symbolizing abundance.

✅ The Green Revolution (1960s–70s) introduced High-Yielding Variety (HYV) seeds for wheat and rice. M.S. Swaminathan is known as the “Father of Green Revolution” in India. Punjab, Haryana, and western UP were the main beneficiaries.

✅ SEBI (Securities and Exchange Board of India) was established in 1992 to regulate capital markets and stock exchanges. RBI regulates banking; IRDAI regulates insurance; DGFT handles foreign trade policy.

✅ India (jointly with Pakistan) first hosted the ICC Cricket World Cup in 1987. India won the World Cup in 1983 (Lord’s, UK), 2011 (Mumbai). India also co-hosted in 1996 (with Pakistan and Sri Lanka).

✅ Carlos Alcaraz of Spain won the Wimbledon Men’s Singles title in 2024, defeating Novak Djokovic in the final. It was his second consecutive Wimbledon title (2023 and 2024).

✅ Neeraj Chopra won India’s first-ever Athletics Olympic Gold at the Tokyo Olympics 2020 (held in 2021) with a throw of 87.58 m. He won Silver at Paris Olympics 2024. He is from Panipat, Haryana.

✅ Chandrayaan-3’s rover was named Pragyan (meaning “wisdom” in Sanskrit). The lander was named Vikram. It successfully landed near the Moon’s South Pole on 23 August 2023, making India the first nation to do so.

✅ The 16th Finance Commission is chaired by Arvind Panagariya, former NITI Aayog Vice Chairman and Columbia University Professor. It was constituted in December 2023 for the period 2026–31.

✅ Rabindra Bharati University is located in Kolkata, West Bengal. It was established in 1962 on the birthday of Rabindranath Tagore. It is built on the premises of Tagore’s ancestral home at Jorasanko. Visva-Bharati is in Santiniketan.