Chemistry
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One-Liners
Study MaterialOne-Liners – Chemistry
Chemistry One-Liners help candidates quickly revise important elements, compounds, reactions, discoveries, formulas, gases, acids, bases, and scientific facts frequently asked in competitive examinations.
These one-liner facts are highly useful for UPSC, SSC, Banking, Railway, Defence, State PSC, CDS, NDA, Insurance, and various government exams.
Basic Chemistry One-Liners
- Chemistry is known as → Central Science
- Smallest particle of matter → Atom
- Smallest particle capable of independent existence → Molecule
- Father of Modern Chemistry → Antoine Lavoisier
- Father of Atomic Theory → John Dalton
- Electron discovered by → J. J. Thomson
- Neutron discovered by → James Chadwick
- Nucleus discovered by → Rutherford
- Proton discovered by → Goldstein
- Matter occupies → Space and has mass
Branches of Chemistry One-Liners
- Organic Chemistry deals with → Carbon compounds
- Inorganic Chemistry deals with → Metals & minerals
- Physical Chemistry deals with → Energy & reactions
- Analytical Chemistry deals with → Substance analysis
- Biochemistry deals with → Living organisms
Elements & Symbols One-Liners
| Element | Symbol |
|---|---|
| Hydrogen | H |
| Oxygen | O |
| Carbon | C |
| Iron | Fe |
| Sodium | Na |
| Silver | Ag |
| Gold | Au |
| Potassium | K |
Important Compounds One-Liners
- Water formula → H₂O
- Carbon dioxide formula → CO₂
- Common salt formula → NaCl
- Baking soda formula → NaHCO₃
- Washing soda formula → Na₂CO₃·10H₂O
- Bleaching powder formula → CaOCl₂
- Ammonia formula → NH₃
- Methane formula → CH₄
- Sulphuric acid formula → H₂SO₄
- Nitric acid formula → HNO₃
Acids, Bases & Salts One-Liners
- Acids are → Sour in taste
- Bases are → Bitter in taste
- Neutralization reaction forms → Salt & Water
- Litmus turns red in → Acidic medium
- Litmus turns blue in → Basic medium
- pH less than 7 indicates → Acidic nature
- pH equal to 7 indicates → Neutral nature
- pH greater than 7 indicates → Basic nature
- Pure water pH value → 7
- Soap solution is → Basic
Metals & Non-Metals One-Liners
- Mercury is the only → Liquid metal
- Bromine is the only → Liquid non-metal
- Graphite conducts → Electricity
- Diamond is the → Hardest natural substance
- Silver is the best conductor of → Electricity
- Copper used in → Electrical wires
- Sodium stored in → Kerosene
- Gold is highly → Malleable
Periodic Table One-Liners
| Fact | Information |
|---|---|
| Periodic Table developed by | Dmitri Mendeleev |
| Modern Periodic Law given by | Henry Moseley |
| Total periods in periodic table | 7 |
| Total groups in periodic table | 18 |
| Most reactive metal | Cesium |
| Most reactive non-metal | Fluorine |
Important Gases One-Liners
- Lightest gas → Hydrogen
- Gas essential for respiration → Oxygen
- Most abundant gas in atmosphere → Nitrogen
- Gas used in balloons → Helium
- Gas used in fire extinguishers → Carbon dioxide
- Gas used for water purification → Chlorine
- Ozone protects Earth from → UV Rays
- LPG mainly contains → Butane & Propane
Important Chemical Reactions One-Liners
- Rusting is an example of → Oxidation
- Photosynthesis occurs in → Green plants
- Respiration releases → Energy
- Combustion means → Burning process
- Neutralization reaction → Acid + Base
- Rusting requires → Oxygen & Moisture
- Corrosion affects → Metals
- Electrolysis uses → Electric current
Everyday Chemistry One-Liners
- Vinegar contains → Acetic acid
- Curd contains → Lactic acid
- Tamarind contains → Tartaric acid
- Ant sting contains → Formic acid
- Toothpaste is → Basic in nature
- Baking soda used in → Cooking
- Bleaching powder used for → Disinfection
- Soap cleans due to → Micelle formation
Scientists & Discoveries One-Liners
| Scientist | Discovery |
|---|---|
| John Dalton | Atomic Theory |
| J. J. Thomson | Electron |
| Rutherford | Atomic Nucleus |
| James Chadwick | Neutron |
| Marie Curie | Radium |
| Henri Becquerel | Radioactivity |
Environmental Chemistry One-Liners
- Global warming caused by → Greenhouse gases
- Acid rain caused by → Sulphur dioxide
- Greenhouse gas mainly responsible for warming → Carbon dioxide
- CNG is cleaner than → Petrol & Diesel
- Biogas produced from → Organic waste
- Solar energy is → Renewable energy
- Electric vehicles reduce → Air pollution
- Ozone depletion caused by → CFCs
Most Important Topics Asked in Exams
- Atomic Structure
- Periodic Table
- Acids, Bases & Salts
- Chemical Formulas
- Metals & Non-Metals
- Important Gases
- pH Scale
- Chemical Reactions
- Environmental Chemistry
- Everyday Chemistry
Quick Revision Framework
Learn Basic Concepts
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Remember Elements & Symbols
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Study Compounds & Reactions
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Revise Acids, Bases & Periodic Table
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Practice One-Liners Daily
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Boost GK Preparation
Final Takeaway
Chemistry One-Liners help candidates quickly revise important formulas, reactions, compounds, discoveries, gases, and scientific facts frequently asked in competitive examinations.
Regular revision of chemistry one-liners improves memory retention, General Science preparation, and competitive examination performance significantly.