class 9 & 10 1st chp concept of chemistry 1
TRANSCRIPT
- 1. Associate Professor Chemistry Winsome College, Dhaka
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- 6. Questionand Answers -Why Is SeaWaterSalty -TellMeWhy -Kids MostAskedWHY[3].mp4
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- 12. 'Drinking from the sea', explore how and why sea water is desalinated[1].mp4
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- 20. A B - C ? A, B C
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