03 October
Carbon and its compounds for TNPSC: allotropes, hydrocarbons, functional groups, soaps and detergents — bilingual notes with 5 MCQs and memory tips.
01 October
Bilingual TNPSC study notes on Radioactivity and Nuclear Physics — discovery, alpha/beta/gamma rays, decay law and half-life, radiation units, fission and fusion, India three-stage nuclear programme and the Kalpakkam fast breeder reactor. 15 key points, 5 practice MCQs, memory tips and previous-year questions in English and Tamil.
22 September
Complete bilingual TNPSC notes on Atomic Structure and Periodic Classification — Dalton, Thomson, Rutherford and Bohr models, atomic number and mass number, isotopes and isobars, electronic configuration, Mendeleev and Moseley, and periodic trends. With 15 key points, 5 MCQs, memory tricks and previous year questions for TNPSC Group 1, 2, 2A, 4 and VAO.
21 September
Complete bilingual TNPSC Daily Notes on Current Electricity and Magnetism — Ohm’s Law, resistivity, series and parallel circuits, Joule heating, electric fuse, electric power and kilowatt-hour, magnetic effect of current, Fleming’s rules and electromagnetic induction. With 14 key points, detailed English and Tamil notes, 5 practice MCQs, memory tips and previous year questions for TNPSC Group 1, 2, 2A, 4 and VAO.
11 September
Complete bilingual (English + Tamil) TNPSC study notes on Heat and Thermodynamics — temperature scales and conversions, anomalous expansion of water, specific heat capacity, latent heat, thermal expansion, the three modes of heat transfer and the four laws of thermodynamics, with 15 key points, 5 practice MCQs, memory tricks and previous year questions for TNPSC Group 1, 2, 2A, 4 and VAO.
02 September
Complete bilingual TNPSC notes on Metals and Non-Metals — reactivity series, ores and minerals, roasting and calcination, extraction of aluminium by the Hall-Heroult process, thermite reaction, corrosion and alloys. Includes 14 key points, detailed notes in English and Tamil, 5 practice MCQs with answers, memory tricks and previous year question patterns for TNPSC Group 1, 2, 2A, 4 and VAO.
22 August
Bilingual (English + Tamil) TNPSC daily study notes on Sound Waves and Acoustics for TNPSC Group 1, 2, 2A, 4 and VAO — key points, detailed notes, 5 practice MCQs, memory tips and previous year question patterns from ATHIYAMAN ACADEMY.
13 August
Bilingual TNPSC daily notes on Acids, Bases and Salts — pH scale, indicators, neutralisation, water of crystallisation, baking soda, washing soda, bleaching powder and plaster of Paris. With 12 key points, detailed English & Tamil notes, 5 MCQs, memory tips and previous year questions for TNPSC Group 1, 2, 2A, 4 and VAO.
12 August
Complete bilingual TNPSC study notes on Sound & Acoustics — audible range, speed of sound, echo, reverberation, SONAR, ultrasonics and the Doppler effect. 15 key points, detailed notes in English and Tamil, 5 practice MCQs, memory tips and previous year questions.
03 August
Free bilingual (English + Tamil) TNPSC General Science – Chemistry notes on Acids, Bases and Salts: the pH scale, indicators, neutralisation, chlor-alkali process, baking soda, washing soda, bleaching powder and Plaster of Paris. Includes 14 key points, detailed notes, 5 practice MCQs, memory tips and previous year questions for TNPSC Group 1, 2, 2A, 4 and VAO.
02 August
TNPSC Daily Notes — Sound & Acoustics (ஒலி மற்றும் ஒலியியல்) from ATHIYAMAN ACADEMY. This free bilingual (English + Tamil) Science-Physics study material covers the speed of sound, longitudinal waves, echo, reverberation, ultrasound, infrasound, SONAR and the Doppler effect — high-scoring topics for TNPSC Group 1, 2, 2A, 4 and VAO…
23 July
📚 Topic: Optics — Light, Reflection, Refraction, Lenses & the Human Eye / ஒளியியல் — ஒளி, எதிரொளிப்பு, ஒளிவிலகல், லென்ஸ்கள் & மனிதக் கண் 🎯 Key Points / முக்கிய குறிப்புகள் 1. Light is a form of electromagnetic wave that travels at 3 × 10⁸ m/s in vacuum. / ஒளி என்பது ஒரு மின்காந்த…
14 July
📚 Topic: Acids, Bases & Salts / அமிலங்கள், காரங்கள் & உப்புகள் 🎯 Key Points / முக்கிய குறிப்புகள் 1. An acid furnishes H⁺ (hydronium, H₃O⁺) ions in water; a base furnishes OH⁻ ions in water. / அமிலம் நீரில் H⁺ (H₃O⁺) அயனிகளையும், காரம் OH⁻ அயனிகளையும் தருகிறது. 2. Acids are sour and turn…
13 July
📚 Topic: Newton’s Laws of Motion & Force / நியூட்டனின் இயக்க விதிகள் & விசை 🎯 Key Points / முக்கிய குறிப்புகள் 1. Newton’s three laws of motion were published by Sir Isaac Newton in 1687 in his book Philosophiæ Naturalis Principia Mathematica (Principia). 1. நியூட்டனின் மூன்று இயக்க விதிகள் சர் ஐசக் நியூட்டனால்…
04 July
📚 Topic: Acids, Bases and Salts / அமிலங்கள், காரங்கள் மற்றும் உப்புகள் 🎯 Key Points / முக்கிய குறிப்புகள் 1. An acid is a substance that releases H⁺ (H₃O⁺) ions in water. / அமிலம் என்பது நீரில் கரையும்போது H⁺ (H₃O⁺) அயனிகளை வெளியிடும் பொருள். 2. A base is a substance that releases OH⁻ ions…