7-sinflar uchun kimyo fanidan test savollari. Iii-chorak uchun 1-variant

8-sinflar uchun kimyo fanidan test savollari. I-chorak uchun 1-variant

1.Oltingugurtning absolyut massasi nechaga teng?

A)53.13824*10^-27 B)44.58245*10^-27 C)50.28314*10^-27 D)48.13824*10^-27

2.SiO,N₂O₅ quyidagi oksidlar suv bilan reaksiyaga kirishsa qanday kislotalar hosil bo`ladi?

A)H₂S,HNO₃ B)SiO, NO₂ C)H₂SiO_3, HNO₃ D)H₂SO_4,HNO₂

3.Malaxitning molekulyar massasi nechaga teng?

A)322 B)222 C)422 D)232

4.FeSO₄*7H₂O quyidagi birikma tarkibida necha xil element bor?

A) 4 B)5 C)9 D)16

5. 14g is gazi (normal sharoitda)qanday hajmni egallaydi?

A)67.2l B)22.4l C)11.2l D)5.6l

6.Kaliyning ekvivalenti nechaga teng?

A)30 B)19.5 C)39 D)40

7.Asosli oksidlar qatorini aniqlang.

A)K₂O₃,SO₃,CO₂ B)K₂O_,Li₂O,CaO

C)Li₂O,SO₃,SiO₂ D)CaO,K₂O,SiO₂

8.Kislotali oksidlarni aniqlang.

A)SO₃,SiO₂ ,N₂O₅ B)Na₂O,BaO,CuO

C)ZnO,Al₂O₃,Na₂O₅ D)SO₃,Al₂O₃,SiO2

9.Quyidagi oksidlarning qaysi biri suvda eriganda asos hosil qiladi?

1. BaO 2.SO₃ 3.Fe₂O₃ 4.CO₂

A)1,2 B)2,3 C)3,4 D)1,3

10.CaO+SO₃ ___......Quyidagi jarayonda qaysi modda hosil bo’ladi.

A)Ca(OH)₂ B)CaSO₃ C)CaSO₄ D)CaO

_________________________________________________________________________12.4d'>11.Reaksiya tenglamani tugallang. Zn(OH)₂+NaOH=

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12.4d¹⁰,5s² bu elektron qavat qaysi elementning tashqi elektron qavatiga mansub?

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13.Nechta katta davr bor?

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14.Na₂SO₄*10H₂O massasini toping.

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15.Izotonlarga misol yozing._____________________________________________
8-sinflar uchun kimyo fanidan test savollari. I-chorak uchun 2-variant

1.Protonni zaryadi va massasi to’g’ri yozilgzn qatorni ko’rsating.

A)₁¹P B)₁⁰P C)₀¹P D)₄²P

2.Amfoter gidroksidlarni aniqlang.

A)Zn(OH)₂,NaOH B)NaOH,KOH

C)Zn(OH)₂,Cr(OH)₃ C)Cr(OH)₃, KOH

3.Ar-argonnig neytron soni nechaga teng.

A)20 B)22 C)32 D)40

4.Zn-ruxning proton soni nechaga teng.

A)20 B)35 C)65 D)30

5.Ozonda kislorod atomlar soni nechaga teng?

A)3 B)2 C)1 D)4

6.Uchinchi davr elementlarida nechta energetik pog’ona bo’ladi?

A) 2ta B) 3ta C) 4ta D) 5ta

7.K.Vinkler kashf qilgan element germaniyni D.I.Mendeleyev qanday nom bilan atagan edi?

A)ekamarganes B)dvimarganes C)ekaslitsiy D)skandinaviy

8. Littiy,kaliy,natriy,rubidiy,seziy kimyoviy elementlarning qanday tabiiy oilasiga kiradi?

A)amfoterlar B)galogenlar C)inert gazlar D)ishqoriy metallar