chemistry class 9 chap 1

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1. 
Chemistry is branch of science which deal with….
2. 
The Greek Period of chemistry during the era
3. 
Muslim period of chemistry..
4. 
Why Ibn-Seena famous in chemistry..
5. 
Father of chemistry is called to…
6. 
SO2 invented by….
7. 
Atomic theory concept is given by..
8. 
Hydrogen gas invented in the year..
9. 
Rutherford in 1937 invented..
10. 
PVC aberration mean….
11. 
SnF2 Used in manufacturing of…
12. 
How many main branch of chemistry
13. 
Chromotogrphy , Spectroscopy are measurements tools are concerned with….
14. 
Famous Muslim chemist was..
15. 
Chlorine is used in
16. 
Element are place in sequence by chemist….

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