SSC General Awareness — Complete Study Notes

Topics Covered

1. Ancient India 2. Medieval India 3. Modern India 4. Polity & Constitution 5. Geography 6. Economics 7. Physics 8. Chemistry 9. Biology 10. Current Affairs Themes

Ancient India

Indus Valley Civilisation (3300–1300 BCE)

Key Points

Major sites: Harappa (Punjab, Pakistan), Mohenjo-daro (Sindh, Pakistan), Lothal (Gujarat), Kalibangan (Rajasthan), Dholavira (Gujarat)
Features: Town planning, grid system, drainage, granaries, Great Bath at Mohenjo-daro
Script: Undeciphered pictographic script
Decline: c. 1800–1300 BCE — climate change / river shift (Saraswati)

Vedic Period & Later Vedic

Period	Time	Texts	Key Features
Early Vedic	1500–1000 BCE	Rigveda (oldest)	Pastoral, tribal, Aryans in Punjab
Later Vedic	1000–600 BCE	Samaveda, Yajurveda, Atharvaveda, Upanishads	Agriculture, varna system, 16 Mahajanapadas

Buddhism & Jainism

Comparison

Buddhism: Siddhartha Gautama (563–483 BCE), born Lumbini (Nepal), Bodh Gaya (enlightenment), Sarnath (first sermon), Kushinagar (death / Mahaparinirvana). Four Noble Truths, Eightfold Path, Middle Path, Ahimsa, anatta (no-self).

Jainism: Vardhamana Mahavira (599–527 BCE), 24th Tirthankara, born Vaishali. Three Jewels: Right Knowledge, Right Faith, Right Conduct. Five vows (non-violence, truth, no stealing, celibacy, no possession). Anekantavada (many-sidedness of truth).

Maurya Empire

Ruler	Period	Notable For
Chandragupta Maurya	321–297 BCE	Founded empire; Arthashastra by Chanakya/Kautilya
Bindusara	297–272 BCE	Expanded south; called "Amitraghata"
Ashoka	268–232 BCE	Kalinga War (261 BCE) → Buddhism; Rock/Pillar Edicts

⚠ SSC Frequent

Ashoka's edicts are in Pali/Brahmi script. Lion Capital (Sarnath) is India's national emblem. Ashoka founded Pataliputra (Patna) as capital.

Gupta Empire (320–550 CE) — Golden Age

Key Points

Chandragupta I → Samudragupta (Allahabad Pillar inscription = "Napoleon of India") → Chandragupta II Vikramaditya
Achievements: Aryabhata (zero, π, heliocentric), Kalidasa (Shakuntala, Meghaduta), Varahamihira (astrology)
Iron Pillar at Delhi (not rusted in 1600 years — proof of ancient metallurgy)
Fa Hien visited during Chandragupta II (399–414 CE)

Medieval India

Delhi Sultanate (1206–1526)

Dynasty	Period	Important Rulers
Slave (Mamluk)	1206–1290	Qutb-ud-din Aibak (Qutub Minar started), Iltutmish, Razia Sultan, Balban
Khilji	1290–1320	Alauddin Khilji (market reforms, Malik Kafur's raids, Siri Fort)
Tughlaq	1320–1414	Ghiyasuddin, Muhammad bin Tughlaq (capital shift Delhi→Daulatabad), Firoz Shah
Sayyid	1414–1451	Khizr Khan
Lodi	1451–1526	Ibrahim Lodi (defeated at Panipat 1526 by Babur)

Mughal Empire (1526–1857)

Ruler	Period	Notable
Babur	1526–1530	1st Battle of Panipat (1526); founder; Tuzuk-i-Baburi
Humayun	1530–40, 1555–56	Lost/Regained empire; died falling from library stairs
Akbar	1556–1605	Din-i-Ilahi, Mansabdari, Ibadat Khana, Navratnas, Fatehpur Sikri
Jahangir	1605–1627	Tuzuk-i-Jahangiri; Nur Jahan influential
Shah Jahan	1627–1658	Taj Mahal, Red Fort, Jama Masjid
Aurangzeb	1658–1707	Deccan campaigns; Jizya reimposed; decline began

💡 Battle Dates (Most Tested)

1st Panipat 1526 (Babur vs Ibrahim Lodi) | 2nd Panipat 1556 (Akbar/Bairam Khan vs Hemu) | 3rd Panipat 1761 (Maratha vs Ahmad Shah Abdali/Durrani)
Battle of Haldighati 1576: Akbar vs Maharana Pratap

Bhakti & Sufi Movements

Key Saints

Bhakti: Ramanuja (Visishtadvaita), Kabir (Hindu-Muslim unity), Mirabai (Krishna devotion), Tukaram (Maharashtra), Chaitanya (Bengal), Surdas (Pushti Marg), Guru Nanak (Sikhism founded)
Sufi: Chishti order (Moinuddin Chishti, Nizamuddin Auliya), Suhrawardi order
Common thread: Devotion over ritual, rejected caste hierarchy, vernacular languages

Modern India & Freedom Struggle

British India — Key Events

Year	Event	Significance
1757	Battle of Plassey	British control of Bengal (Siraj ud-Daulah defeated by Clive)
1764	Battle of Buxar	Consolidated British power in India
1857	First War of Independence	Sepoy Mutiny; started Meerut, 10 May; ended Mughal empire
1885	Indian National Congress founded	A O Hume, Dadabhai Naoroji (president)
1905	Partition of Bengal	Curzon; Swadeshi Movement; united resistance
1919	Jallianwala Bagh massacre	Amritsar; Gen Dyer; 13 April
1920	Non-Cooperation Movement	Gandhi; first mass movement
1930	Civil Disobedience / Dandi March	Salt march 12 March (Sabarmati → Dandi, 241 miles)
1942	Quit India Movement	August 8–9; "Do or Die"
1947	Independence	15 August; Mountbatten last viceroy; India-Pakistan partition

Important Personalities

Freedom Fighters & Leaders

Bal Gangadhar Tilak — "Swaraj is my birthright"; Kesari & Mahratta newspapers; Extremist leader
Lala Lajpat Rai — Punjab Kesari; died after lathi charge 1928
Bhagat Singh — Lahore conspiracy case; hanged 23 March 1931
Subhash Chandra Bose — INA; "Give me blood, I'll give you freedom"; Azad Hind Fauj
B R Ambedkar — Father of Indian Constitution; Dalit rights
Sardar Vallabhbhai Patel — Iron Man; integrated princely states

Polity & Constitution

Constitution Basics

Key Facts

Adopted: 26 November 1949 | Enforced: 26 January 1950 (Republic Day)
Constituent Assembly: Dr Rajendra Prasad (President); B R Ambedkar (Chairman, Drafting Committee)
Articles: Originally 395 (now 448) | Schedules: 12 | Parts: 25
Preamble: Sovereign, Socialist, Secular, Democratic Republic (added "Socialist" and "Secular" by 42nd Amendment, 1976)

Fundamental Rights (Part III, Articles 12–35)

Article Range	Right
14–18	Right to Equality (equality before law, no discrimination, equality of opportunity, untouchability abolished, abolish titles)
19–22	Right to Freedom (speech, assembly, movement, residence, profession)
23–24	Right against Exploitation (no forced labour, no child labour <14 yrs)
25–28	Right to Freedom of Religion
29–30	Cultural and Educational Rights
32	Right to Constitutional Remedies (Dr Ambedkar: "Heart and Soul of Constitution")

Important Articles (Frequently Asked)

Must-Know Articles

Art 1: India, that is Bharat, shall be a Union of States
Art 21: Right to Life and Personal Liberty
Art 44: Uniform Civil Code (DPSP)
Art 51A: Fundamental Duties (added by 42nd Amendment)
Art 72: Pardoning power of President
Art 76: Attorney General of India
Art 110: Money Bill definition
Art 123: President's Ordinance power
Art 148: Comptroller and Auditor General (CAG)
Art 280: Finance Commission
Art 324: Election Commission
Art 343: Official Language (Hindi)
Art 356: President's Rule (Emergency in States)

Constitutional Bodies

Body	Article	Head/Key Detail
Election Commission	Art 324	Chief Election Commissioner (removal like SC judge)
UPSC	Art 315–323	Civil services recruitment
CAG	Art 148	Audits govt accounts; removed like SC judge
Finance Commission	Art 280	Constituted every 5 years; tax devolution
Attorney General	Art 76	First Law Officer of India; can appear before any court

Geography (India & World)

India — Physical Features

Key Facts

Area: 3.29 million km² (7th largest) | Population: ~1.44 billion (2nd largest)
Coastline: ~7,516 km | Total border: ~15,200 km
Highest peak: K2 (in PoK) — disputed; Kangchenjunga (3rd highest) is in India
Longest river: Ganga | Largest lake: Wular Lake (J&K)
Largest state (area): Rajasthan | Most populated: Uttar Pradesh
Tropic of Cancer (23.5°N) passes through: Gujarat, Rajasthan, MP, Chhattisgarh, Jharkhand, WB, Tripura, Mizoram
Standard Meridian: 82.5°E passes through Allahabad (Prayagraj), Mirzapur

Indian Rivers

River	Origin	Drains into	Key Feature
Ganga	Gangotri glacier	Bay of Bengal	Longest in India (~2,525 km)
Indus	Tibet (Lake Mansarovar)	Arabian Sea	Flows through J&K, Pakistan
Brahmaputra	Tibet (Chemayungdung glacier)	Bay of Bengal	Largest river by discharge; Dihang in Arunachal
Godavari	Trimbakeshwar, Nashik	Bay of Bengal	"Dakshin Ganga" — longest Peninsular river
Krishna	Mahabaleshwar	Bay of Bengal	Nagarjuna Sagar dam
Kaveri	Brahmagiri hills, Coorg	Bay of Bengal	"Ganga of South India"
Narmada	Amarkantak, MP	Arabian Sea	Flows W; Marble Rocks; Sardar Sarovar

World Geography Highlights

Key World Facts

Largest country: Russia | Smallest: Vatican City
Longest river: Nile (6,650 km) or Amazon (debated) | Largest lake: Caspian Sea
Highest mountain: Mt Everest (8,849 m, Nepal-China border)
Deepest ocean trench: Mariana Trench (~11,034 m), Pacific
Largest ocean: Pacific | Smallest: Arctic
Largest desert: Antarctica (cold desert); Sahara (hot desert)
Largest continent: Asia | Smallest: Australia
International Date Line: 180° meridian (zig-zagged through Pacific)
Greenwich Mean Time: 0° meridian through Royal Observatory, Greenwich, UK

Soils of India

Soil Type	States	Crops
Alluvial (most fertile, largest area)	Indo-Gangetic plain, coastal	Wheat, rice, sugarcane, pulses
Black (Regur/Cotton)	Maharashtra, MP, Gujarat	Cotton (self-ploughing, retains moisture)
Red & Yellow	Eastern/southern plateau	Groundnut, millets
Laterite	Kerala, Karnataka hills	Tea, coffee, rubber (leached, poor nutrients)
Desert (Arid)	Rajasthan, Gujarat	Bajra, drought-resistant

Economics

Basic Concepts

GDP, GNP, NNP

GDP (Gross Domestic Product): Total value of goods/services produced within a country's borders in a year (regardless of who produced)
GNP = GDP + Net Factor Income from Abroad (by nationals, not foreigners)
NNP = GNP − Depreciation (Net National Product)
NNP at market price − Indirect Taxes + Subsidies = National Income (NNP at factor cost)

GDP deflator: measures inflation between real and nominal GDP
Per capita income = National Income / Total population
Base year for India's GDP calculation: 2011–12

Inflation Measures

CPI (Consumer Price Index): Measures retail price changes (affects common man)
WPI (Wholesale Price Index): Measures wholesale price changes
Core inflation: Inflation excluding food and fuel
Repo rate: Rate at which RBI lends to commercial banks (higher = less inflation)
Reverse Repo rate: Rate at which banks park funds with RBI
CRR: Cash Reserve Ratio — % deposits kept with RBI
SLR: Statutory Liquidity Ratio — % assets in liquid form

Indian Economy — Key Institutions

Institution	Full Form / Role	Headquarters
RBI	Reserve Bank of India — Central bank; monetary policy; note issuing	Mumbai
SEBI	Securities and Exchange Board of India — Regulates stock market	Mumbai
NABARD	National Bank for Agriculture & Rural Development	Mumbai
SIDBI	Small Industries Dev Bank of India — MSME financing	Lucknow
NDB	New Development Bank (BRICS bank)	Shanghai
IMF	International Monetary Fund — Balance of payments support	Washington DC
World Bank	IBRD + IDA — Long-term development lending	Washington DC
WTO	World Trade Organisation — Trade rules among nations	Geneva

Five Year Plans & Current Policy

Planning in India

Planning Commission (1950–2014) replaced by NITI Aayog (2015)
NITI Aayog: PM is Chairman; CEO heads day-to-day operations
12th Five Year Plan (2012–2017) was the last Five Year Plan
Fiscal year in India: 1 April to 31 March
Union Budget presented by Finance Minister on 1 February (changed from Feb 28)

Important Economic Terms

Term	Meaning
Fiscal deficit	Govt expenditure exceeds revenue (borrows to fill gap)
Revenue deficit	Revenue expenditure exceeds revenue receipts
Disinvestment	Govt selling its share in PSUs to raise money
GST	Goods and Services Tax; implemented 1 July 2017; "One Nation, One Tax"
Recession	Two consecutive quarters of negative GDP growth
Depression	Prolonged economic downturn (worse than recession)
Stagflation	High inflation + high unemployment simultaneously
Purchasing Power Parity	Compares purchasing power of currencies across countries

Physics

Motion & Newton's Laws

Newton's Laws

1st Law (Inertia): A body stays in its state of rest/motion unless acted upon by external force
2nd Law: F = ma (Force = mass × acceleration)
3rd Law: Every action has equal and opposite reaction

Momentum = mass × velocity (p = mv)
Impulse = Force × time = change in momentum
Law of Conservation of Momentum: Total momentum of isolated system = constant
Velocity of light: 3 × 10⁸ m/s

Sound & Light

Topic	Key Points
Speed of sound	~343 m/s in air at 20°C; faster in solids > liquids > gases; cannot travel in vacuum
Sonic boom	When object exceeds speed of sound (Mach 1)
Echo	Reflection of sound; need >17m distance for echo; min distance between source and wall = 17.2m
Ultrasound	Frequency > 20,000 Hz; used in SONAR, medical imaging
Light reflection	Angle of incidence = angle of reflection; Laws of Reflection
Total Internal Reflection	When angle of incidence > critical angle; basis of optical fibre
Scattering	Sky blue (Rayleigh scattering: blue scattered most); sunset red (blue scattered away)

Electricity & Magnetism

Key Formulas & Facts

Ohm's Law: V = IR (Voltage = Current × Resistance)
Power: P = VI = I²R = V²/R
Series connection: R_total = R₁ + R₂ + ... (current same, voltage divides)
Parallel connection: 1/R_total = 1/R₁ + 1/R₂ + ... (voltage same, current divides)

SI unit of Charge: Coulomb | Current: Ampere | Resistance: Ohm | Power: Watt | Energy: Joule
1 kWh (unit of electricity) = 3.6 × 10⁶ J
AC frequency in India: 50 Hz | Household voltage: 220V
Fuse: high resistance alloy that melts on overload (tin-lead alloy); placed in LIVE wire

Heat & Temperature

Key Conversions

°C to K: K = °C + 273 | °C to °F: °F = (9/5)°C + 32
Absolute zero: 0 K = −273°C = −459.4°F
Specific heat capacity of water: 4200 J/kg/°C (highest of common substances)
Latent heat of fusion of ice: 80 cal/g (336 kJ/kg)
Latent heat of vaporisation of water: 540 cal/g (2260 kJ/kg)

Good conductor: metals (copper, silver best)
Bad conductor / Insulator: wood, rubber, glass, air

Modern Physics Discoveries

Discovery	Scientist	Year
X-rays	Wilhelm Röntgen	1895
Radioactivity	Henri Becquerel	1896
Electron	J J Thomson	1897
Nucleus	Ernest Rutherford	1911
Neutron	James Chadwick	1932
Penicillin	Alexander Fleming	1928
E = mc²	Albert Einstein	1905

Chemistry

Periodic Table Basics

Key Facts

Periods: 7 | Groups: 18
Atomic number = number of protons = electrons in neutral atom
Mass number = protons + neutrons
Isotopes: Same protons, different neutrons (e.g. Carbon-12, Carbon-14)
Isobars: Same mass number, different protons (e.g. ⁴⁰Ca and ⁴⁰Ar)

Valency: Combining capacity of an element
Most reactive metal: Caesium (Cs) | Most reactive non-metal: Fluorine (F)
Noble gases: He, Ne, Ar, Kr, Xe, Rn — inert (complete octet)
Halogens (Group 17): F, Cl, Br, I — most reactive non-metals

Common Acids, Bases & Salts

Substance	Formula	Common Name / Use
Sulphuric acid	H₂SO₄	King of chemicals; car batteries
Hydrochloric acid	HCl	Stomach acid; cleaning metals
Nitric acid	HNO₃	Fertilisers; explosives
Acetic acid	CH₃COOH	Vinegar (5% solution)
Sodium hydroxide	NaOH	Caustic soda; soap making
Calcium hydroxide	Ca(OH)₂	Slaked lime; whitewash
Sodium chloride	NaCl	Common salt; preservative
Baking soda	NaHCO₃	Sodium bicarbonate; fire extinguisher
Washing soda	Na₂CO₃·10H₂O	Sodium carbonate; glass making
Bleaching powder	Ca(OCl)Cl	Calcium hypochlorite; disinfectant

💡 pH Scale

pH < 7 = Acidic | pH = 7 = Neutral | pH > 7 = Basic/Alkaline
Blood pH: ~7.4 (slightly basic) | Stomach HCl: ~1.5 | Pure water: 7

Common Chemical Reactions & Products

Important Reactions

Rusting of Iron: 4Fe + 3O₂ + 6H₂O → 4Fe(OH)₃ (hydrated iron oxide)
Photosynthesis: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ (in presence of sunlight + chlorophyll)
Respiration: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy
Thermite reaction: Fe₂O₃ + 2Al → Al₂O₃ + 2Fe + heat (used in welding railways)
Bleaching action of Cl₂: Cl₂ + H₂O → HCl + HClO; nascent [O] bleaches

Biology

Cell — The Unit of Life

Key Points

Cell theory: Schleiden (plants) & Schwann (animals) 1839; Virchow — all cells from pre-existing cells
Prokaryotic: No nucleus (bacteria, cyanobacteria) | Eukaryotic: True nucleus (plants, animals, fungi)
Largest cell: Ostrich egg | Smallest: Mycoplasma (bacteria)
Powerhouse: Mitochondria | Kitchen: Chloroplast | Control centre: Nucleus
Golgi body: Packaging and secretion | Lysosomes: "Suicide bags" (digestion) | Ribosome: Protein synthesis

Human Body Systems

System	Key Facts
Circulatory	Heart: 4 chambers; Double circulation; Normal BP = 120/80 mmHg; RBC lifespan = 120 days
Respiratory	Tidal volume = 500 mL; Vital capacity = 4.5 L; Breathing rate = 12–20/min
Digestive	Longest organ: Small intestine (~6-7 m); Enzymes: salivary amylase, pepsin (stomach), trypsin (pancreas)
Nervous	Neurons: structural unit; Brain + spinal cord = CNS; Peripheral = PNS; Reflex arc bypasses brain
Excretory	Kidney: functional unit = Nephron; ~1 million nephrons per kidney; Urine = 95% water

Vitamins & Deficiency Diseases

Vitamin	Chemical Name	Deficiency Disease	Source
A	Retinol	Night blindness, Xerophthalmia	Carrots, liver
B1	Thiamine	Beriberi	Cereals, legumes
B2	Riboflavin	Ariboflavinosis	Milk, eggs
B3	Niacin	Pellagra	Meat, fish
B12	Cyanocobalamin	Pernicious anaemia	Meat, dairy
C	Ascorbic acid	Scurvy	Citrus fruits, amla
D	Calciferol	Rickets (children), Osteomalacia (adults)	Sunlight, fish liver oil
E	Tocopherol	Sterility, muscular dystrophy	Nuts, seeds, oils
K	Phylloquinone	Bleeding/clotting failure	Green leafy vegetables

💡 Fat vs Water Soluble

Fat-soluble: A, D, E, K (stored in body fat, can accumulate toxically) | Water-soluble: B complex + C (not stored, need daily intake)

Diseases — Causative Organisms

Disease	Caused by	Vector/Transmission
Malaria	Plasmodium (protozoa)	Female Anopheles mosquito
Dengue	Dengue virus (Flavivirus)	Aedes aegypti mosquito
Typhoid	Salmonella typhi (bacteria)	Contaminated food/water
Tuberculosis	Mycobacterium tuberculosis	Air droplets
Cholera	Vibrio cholerae	Contaminated water
AIDS	HIV (virus)	Blood, sexual contact, mother-child
Rabies	Rabies virus	Dog/animal bite
Leprosy	Mycobacterium leprae	Prolonged contact

Current Affairs — Key Themes for SSC

⚠ Note on Current Affairs

Current affairs questions are based on events from the 6–12 months before the exam. This section provides themes and types of questions — verify specific facts from recent news before the exam.

Static GK Topics Always Asked

Perennial SSC Topics

National Parks & Wildlife Sanctuaries: Corbett (Uttarakhand), Kaziranga (Assam, one-horned rhino), Gir (Gujarat, Asiatic lion), Sundarbans (Bengal, tiger), Periyar (Kerala, tiger & elephant)

Important Days: Republic Day (26 Jan), Independence Day (15 Aug), Gandhi Jayanti (2 Oct), Constitution Day (26 Nov)

Dance Forms: Bharatanatyam (TN), Kathak (UP/Rajasthan), Odissi (Odisha), Kuchipudi (AP), Kathakali (Kerala), Manipuri (Manipur), Sattriya (Assam), Mohiniyattam (Kerala)

Sports & Trophies: Durand Cup (football), Santosh Trophy (football), Ranji Trophy (cricket), Duleep Trophy, Irani Trophy, Agha Khan Cup (hockey), Thomas Cup (badminton men), Uber Cup (badminton women)

Awards (Frequently Asked)

Award	Field	Country
Nobel Prize	Physics, Chemistry, Medicine, Literature, Peace, Economics	Sweden/Norway
Bharat Ratna	Highest civilian award, India	India
Padma Vibhushan	2nd highest civilian; exceptional service	India
Padma Bhushan	3rd highest civilian; distinguished service	India
Padma Shri	4th; distinguished service in any field	India
Booker Prize	English literature (any nationality)	UK
Pulitzer Prize	Journalism, literature, music	USA
Filmfare Awards	Hindi cinema	India