1-chorak. 2-blok. 8-sinf. Rus tili

8-sinf Kimyo.

1. Erigan moddaning massa ulushini topish formulasi qaysi ?

A) C---M₁ 100/M B) C----M/V 100
C) C-----M/M₁ D) KCI
2.Natriy atomining elektron formulasini aniqlang?
A) 1S²2S²2P⁶3S¹ B) 1S²2S²2P⁶3S²
C) 1S²2S²2P⁶ D) C---M₁ 100/M
3. Quyidagi reaksiya kimyoviy reaksiyalarning qaysi turiga kiradi? Zp + 2HCI --- ZpCI₂ + H₂
A)Birikish B) Almashinish C) Ajralish D) Sinish.
4. Тuzning formulasini aniqlang ?
A) H₃PO₄ B) NaOH
C) KCI D) C-----M/M₁
5. 1.8 gr. suv parchalanganda necha litr vodorod xosil bo’ladi?
A) 2.24 l. B) 22.4 l. C) 44.8 l. D) 4.481.
6. Avagadro doimiysini toping.
A) 6.02*10²³ B) 3.01* 10²³ C) 60.2*10²³ D) 8.23*10²¹
7. 10 mol sum necha gr. keladi?
A) 180 gr. B) 18 gr. C) 36 gr. D) 360 gr.
8. Karbonat angidrit (CO₂) ning molekulyar massasi qancha?
A) 44 B) 46. C) 41. D) 49.
9.Oddiy moddalar qatorini ko’rsating ?
A) H₂ H₂O O₂ B) Fe Cu Na
C) Cu Na NO D) C----M/V 100
10. Fizikaviy hodisani aniqlang ?
A) Тemirning zanglashi . B)Тumanning paydo bo’lishi .
C) Ko’mirning yonishi . D) TJY.
11. 0.3 mol SiO necha gramm keladi ?_______________________________________________________
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12. Kislotalar qatorini ko’rsating? _________________________________________________________
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13.Osh tuzi malekulasidagi ximiyaviy bog’lanishni ko’rsating ? __________________________________
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14 Quydagi formulalardan asosli oksidni toping . 1.Na₂O 2 N₂O₅ 3 SO₃ 4 ZpO 5 FeO
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15. Qaysi moddalar qutbli bog’lanish natijasida hosil bo’lgan ? __________________________________
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