Kimyo 8- sinf test monitoring

Kimyo 7-sinf test monitoring.

1. 
   K2CO3 moddadagi C ning % miqdorini aniqlang ?
   

1. 
   9.3 % B) 8,7 % C) 10.2% D) 15 %
   

2. 
   Al (OH)₃ + H₂SO₄Al₂(SO4)₃ + H₂O .Ushbu reyaksiada suvning oldidagi koyfitsentni aniqlang.
   

1. 
   3 B) 6 C) 1 D) 10
   

3. 
   Modda massasining saqlanish qonunini qaysi olim ifodalab bergan.
   

1. 
   Boyl B) Lomonosov C) Dalton D) Avogadro
   

4. 
   Atomlarni o’lchami qancha atrofida bo’ladi. (Angstrem)
   

1. 
   1 A B) 10 A C) 100 A D ) 50 A
   

5. 
   Avogadro doimiysini aniqlang.
   

1. 
   6.02 *10²³ B) 1.5*10²³
   
2. 
   C) 12.04 *10²³ D) 9.03*10²³
   

6. 
   Modda tarkibini doimiylik qonunini qaysi olim kashf etgan .
   

1. 
   Lomonosov B) Prust C) Dalton D ) Avogadro
   

7. 
   1,5 mol O₃ ning massasini gramlarda hissoblang.
   

1. 
   48 B) 72 C) 24 D) 32
   

8. 
   Har qanday gazning 1 moli normal sharoitda ………….. litr hajimni egallaydi.
   

1. 
   5.6 litr B) 33.6 litr
   
2. 
   C) 22.4 litr D) 11.2 litr
   

9. 
   2 mol suvning H2O massa sini gramlarda hissoblang.
   

1. 
   18 B) 36 C) 54 D) 8
   

10. 
    Na2SO4 tarkibidagi S oltingugurt ni % miqdorini aniqlang.
    

1. 
   12.5 % B) 22.5 %
   
2. 
   C) 14.2 % D) 18 %
   

11. 
    6.4 gram SO2 dagi modda miqdori molini toping.
    

1. 
   0.5 mol B) 0.3 mol
   
2. 
   C) 0.4 mol D) 0.1 mol
   

12. 
    Ca(OH)₂ +H₃PO₄Ca₃(PO₄)₂ +H₂O reaksiyadagi suvni H2O oldidagi koifitsentni aniqlang.
    

1. 
   1 B) 4 C) 6 D) 2
   

13. 
    H3PO4 ning molekulyar massasini Mr hissoblang.
    

1. 
   98 gr/mol B) 68 gr/mol C) 88 gr/mol D) 74 gr/mol
   

14. 
    Na va Al ning valentligini belgilang.
    

1. 
   1 va 4 B) 1 va 3
   
2. 
   C) 2 va 5 D) 3 va 6
   

15. 
    Quyidagilardan eng yengil massali gazlarni belgilang.
    

1. 
   SO2 va NH3 B) SO3 va H2S
   
2. 
   C) O2 va N2 D) H2 va He