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water-l1
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======= Water Chemistry Lecture-1 ======= <WRAP group> <WRAP half column> **Lecture -1** By [[https:/... allowfullscreen></iframe> <script src="https://apis.google.com/js/platform.js"></script> <div class=... s - Types of hardness - Unit of Hardness - Disadvantages of hard water in domestic and industrial uses - Characteristics of drinking or potable water **Questions fo
Water Chemistry
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====== Water Chemistry ====== <html> <iframe width="560" height="315" src="https://www.youtube.com/em