Lesson 3 of 5 • 12 upvotes • 6:40mins
Hardness of water ,water hardness rating, sources of hardness water, types of hardness are covered in this video
5 lessons • 35m
Course overview (in Hindi)
2:01mins
Hardness of Water Part 1 (in Hindi)
7:53mins
Hardness of Water Part 2 (in Hindi)
6:40mins
Hardness of Water Part 3 (in Hindi)
10:22mins
Hardness of Water Part 4 (in Hindi)
8:46mins