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Lessons
6 lessons • 51m
Overview lesson (in Hindi)
2m 00s
PH: Potential Hydrogen Ion Concentration (in Hindi)
11m 44s
Acidity and Alkalinity (in Hindi)
10m 47s
Hardness (in Hindi)
8m 21s
Remaining of Chemical Characteristics (in Hindi)
8m 37s
Biological water quality (in Hindi)
9m 51s