Chemistry Notes Ssc Jun 2026
Master SSC Chemistry: Core Notes & Exam Strategy Chemistry is a high-scoring section of the SSC General Awareness paper, typically contributing 2–3 questions per shift. Since the syllabus generally aligns with , focused revision of key definitions and "everyday life" chemistry is the most effective way to secure these marks. 1. Essential Concepts for SSC Exams
: Most SSC chemistry questions are rooted in Class 6 to 10 NCERT concepts. Solve PYQs : Practicing Previous Year Questions (PYQs)
| Common Name | Chemical Name | Chemical Formula | Key Uses | |---|---|---|---| | Baking Soda | Sodium Bicarbonate | NaHCO₃ | Cooking, antacid, fire extinguisher | | Washing Soda | Sodium Carbonate Decahydrate | Na₂CO₃·10H₂O | Cleaning agent, water softener | | Common Salt | Sodium Chloride | NaCl | Food flavoring, preservative | | Bleaching Powder | Calcium Oxychloride | CaOCl₂ | Disinfectant, bleaching agent in textiles | | Caustic Soda | Sodium Hydroxide | NaOH | Soap and detergent manufacturing, drain cleaner | | Caustic Potash | Potassium Hydroxide | KOH | Soap manufacturing, battery electrolyte | | Plaster of Paris | Calcium Sulphate Hemihydrate | CaSO₄·½H₂O | Construction, casting molds, setting fractures | | Quicklime | Calcium Oxide | CaO | Cement and steel manufacturing, water treatment | | Slaked Lime | Calcium Hydroxide | Ca(OH)₂ | Whitewashing, neutralizing acidic soil | | Vinegar | Acetic Acid | CH₃COOH | Cooking, cleaning agent | | Laughing Gas | Nitrous Oxide | N₂O | Anesthetic in medical procedures | | Dry Ice | Solid Carbon Dioxide | CO₂ (solid) | Cooling agent, special effects | | Marsh Gas | Methane | CH₄ | Fuel, main component of natural gas | | Sand | Silicon Dioxide | SiO₂ | Construction material, glass manufacturing | | Marble/Chalk | Calcium Carbonate | CaCO₃ | Building material, antacid |
Carbon exhibits a unique ability called , allowing it to form long chains and complex structures. Allotropes of Carbon chemistry notes ssc
Do not go deep into mechanisms; stick to basics.
Discovered by J.J. Thomson. Carries a negative charge ( C). Negligible mass.
. Memorize trends like electronegativity, atomic size, and ionization energy. Acids, Bases, and Salts Master SSC Chemistry: Core Notes & Exam Strategy
Super-heated gas consisting of highly ionized particles. Found in stars and neon signs.
: Discovered by Ernest Rutherford (named) / Goldstein (observed). Positively charged. Located in the nucleus.
Silver is the best conductor of electricity, followed by copper. Essential Concepts for SSC Exams : Most SSC
Substances formed by chemically combining two or more elements in a fixed ratio (e.g., Water, Carbon Dioxide).
Halogens (Fluorine, Chlorine, Bromine, Iodine) — highly electronegative. Fluorine is the most electronegative element. Bromine is the only non-metal that is liquid at room temperature.
: Uniform composition throughout (e.g., Air, Salt solution, Alloys like Brass).
