Chemical Reactions and Equations Class 10 One Shot | NCERT + PYQs | Boards 2027

Class 10 Science Chapter 1, Chemical Reactions and Equations, complete in one video for CBSE Boards 2027. Every NCERT activity is shown step by step, every equation is balanced on the board, and 30 board-style questions are solved the way examiners want them written. Explained calmly in Hinglish. Free practice PDF (mentioned in the video): coming soon. Comment "PDF" below if you want it. In this video: • All 11 NCERT activities, drawn step by step • Writing and balancing equations, with state symbols and conditions • Combination, decomposition, displacement, double displacement and redox reactions • Exothermic and endothermic reactions, corrosion and rancidity • The NCERT lines to remember, with the page number on screen • 20 MCQs (with Assertion-Reason), 10 full-marks written answers, and every NCERT equation balanced Chapters: 0:00 Physical vs chemical change 1:06 Six changes from daily life 2:27 Activity 1.1: burning magnesium 5:05 Activities 1.2 and 1.3 6:26 Signs of a chemical reaction 7:58 Word equations 9:35 Skeletal equation, and why O2 10:54 Law of conservation of mass 12:45 Balancing Fe + H2O step by step 16:39 State symbols and reaction conditions 18:45 Summary, exam line and Board 2027 rule 19:57 Types of chemical reactions 20:58 Activity 1.4: quick lime + water 22:46 Combination reaction 23:48 Whitewashing and the lime names 26:01 More combination reactions 27:56 Exothermic reactions 30:38 Respiration and compost 33:10 Recap and exam line 33:55 Decomposition: the opposite of combination 34:59 Activity 1.5: heating ferrous sulphate 37:48 Limestone to quick lime: thermal decomposition 39:19 Activity 1.6: heating lead nitrate 41:04 Activity 1.7: electricity breaks water 43:49 Activity 1.8: light breaks silver chloride 46:00 Heat, light, electricity: one table 46:47 Endothermic: heat goes in 49:04 Recap and exam line 50:16 Displacement reaction: the idea 51:00 Activity 1.9: iron nails in copper sulphate 52:01 Why the nail turns brown, and Eq. 1.24 53:11 Definition, Eq. 1.25 and 1.26, the reactivity ladder 55:05 Board questions on displacement 56:44 Double displacement: Activity 1.10 57:50 Eq. 1.27: the white barium sulphate precipitate 58:40 Ions exchange: the definition 59:42 Lead iodide (Activity 1.2) and board questions 1:01:01 Recap and exam line 1:02:06 Oxidation: heating copper (Activity 1.11) 1:03:09 Reduction: hydrogen over copper oxide 1:03:51 Oxidised, reduced and redox reactions 1:05:09 Two more redox reactions and the full definitions 1:06:37 Common mistake, oxidising and reducing agents 1:08:04 One reaction, many types: burning magnesium 1:08:40 Corrosion 1:10:06 Exam tips: corrosion 1:10:44 Rancidity and how to slow it 1:11:52 Chapter 1 recap and exam line 1:13:03 Questions: how Chapter 1 comes in the board exam 1:15:43 MCQs 1-5: types of change, balancing, quick lime 1:19:33 MCQs 6-10: heat in or out, lead nitrate, electrolysis 1:23:21 MCQs 11-15: light, displacement, metals and acids 1:26:36 MCQs 16-20: precipitates, redox, rancidity 1:30:18 Q21: words to a balanced equation 1:32:24 Q22: find the error (2027 style) 1:34:09 Q23: oxidised, reduced, reducing agent 1:35:45 Q24: whitewash substance X 1:37:19 Q25: green crystals heated 1:38:40 Q26: silver chloride in sunlight 1:40:04 Q27: why is hydrogen double? 1:41:26 Q28: iron nail in copper sulphate 1:42:56 Q29: who is right? (5 marks) 1:45:28 Q30: corrosion and rancidity 1:47:28 Bonus: every NCERT equation, balanced 1:54:20 30/30 done and the last exam line ConceptLab teaches Class 10 Science one chapter at a time: clear concepts and exam-ready answers, in Hinglish. Subscribe to get every chapter before the boards. #Class10Science #ChemicalReactionsAndEquations #CBSE2027