The video contains explanation of class 9 science chapter SOUND. The chapter has been discussed in three videos and the links to other two are given below.

Part 2 (Sound) [ Ссылка ]

Part 3 (Sound) [ Ссылка ]

Class 9 Science chapters
[ Ссылка ]_

Class 9 Social science chapters
[ Ссылка ]

Class 9 English
[ Ссылка ] Class 9 Maths
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