METALS | HEAVY METALS | COPPER | IRON | ZINC | MERCURY | SILVER | EXTRACTION | CALOMEL |BLUE VITRIOL

METALS | HEAVY METALS | COPPER | IRON | ZINC | MERCURY | SILVER | EXTRACTION | CALOMEL |BLUE VITRIOL METALS | HEAVY METALS | Copper, Iron, Zinc, Mercury, Silver | Extraction & Important Compounds | NEB Class 11/12 Chemistry In this complete lecture, we explore one of the most important topics in inorganic chemistry — Metals and Heavy Metals. This video is specially designed for NEB Class 11 & 12 students, helping you build strong concepts for board exams as well as competitive exams. यस भिडियोमा हामीले Copper, Iron, Zinc, Mercury, Silver जस्ता महत्वपूर्ण धातुहरूको extraction process (उत्खनन विधि) लाई step-by-step clear explanation सहित cover गरेका छौँ। If you are preparing for NEB board exams, this video will give you a complete conceptual understanding + exam-oriented preparation. 🔥 Topics Covered in This Video ⚙️ 1. Extraction of Metals (धातुहरूको निष्कर्षण) Extraction of Copper (Cu) from copper pyrites (CuFeS₂) Extraction of Zinc (Zn) from zinc blende (ZnS) Extraction of Mercury (Hg) from cinnabar (HgS) Extraction of Iron (Fe) using Blast Furnace Extraction of Silver (Ag) using Cyanide process We explain roasting, calcination, reduction, and refining processes in a very simple and understandable way. 2. Important Compounds of Metals This video also covers important compounds frequently asked in exams: Blue Vitriol (CuSO₄·5H₂O) – properties, preparation & uses White Vitriol (ZnSO₄·7H₂O) – characteristics and importance Calomel (Hg₂Cl₂) – preparation and uses Corrosive Sublimate (HgCl₂) – properties and toxicity 📌 These compounds are very important for short questions, long questions, and practical-based questions. 🏭 3. Important Metallurgical Processes We also discuss major industrial processes: Bessemer Process (Basic Oxygen Process) – purification of metals Open Hearth Process – steel production in industries These processes are explained with concept clarity so that you can easily write answers in exams.