lượt xem
4:00
10th FBISE chemistry - FBISE chemistry soft & hard water - FBISE chemistry 10th class
18:32
Soft Water and Hard Water | Chapter # 15 | Chemistry Class 10th | Lec #
5:59
CH 15 water 10 chemistry most important short and long Questions||
10:48
Class 10 - Chemistry - Chapter 15 - Lecture 2 - Soft and Hard Water - Allied Schools
5:48
Soft water and hard water || Chemistry class 10 chapter 15
19:19
Soft and hard water | causes of Hardness of water | types of Hardness | ch#15 | 10th class chemistry
20:47
Types of hardness of water | Chapter # 15 | Chemistry Class 10th | Lec 5
18:33
Class 10 Chemistry Chapter 7 - Removal of Permanent Hardness -10th Class Chemistry Chapter 7
