10th Class Chemistry Lecture Unit 15 (PTB Syllabus)

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9th and 10th class English, Biology, Physics, Chemistry, and Computer Science Lectures for Punjab Boards. Class 9th 10th , IX/SSC-1/Matric. These Lectures are per the Latest Syllabus/Course Prescribed by the Boards of Intermediate and Secondary Education (BISEs) of Punjab Province and prescribed by the Department of Education, Punjab Government, Lahore.
In this video,
I covered these things.
Lecture
Unit:15
Water,
Introduction,
Properties of water,
Water as Solvent ,
Soft and Hard Water,
Types of Hardness,
Methods of removinf hardness,
Disadvantages of water hardness,
Water Pollution,
Water borne diseases,
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