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Robots Can't Replace Men

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Submitted By staroflove2324
Words 465
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O’zbekiston Respublikasi Хalq talim vazirligi
Respublika bolalar kutubхonasi
Fan: Kimyo

9-sinflar
Test savollari variant 1. XVIII asrda nechtacha element ma`lum edi?
20 tacha
30 tacha
50 tacha
100 tacha

2. Davriy sistemaning dastlabki variantida necha element aks etgan edi?
a) 63 ta
b) 70 ta
c) 75 ta
d) 109 ta

3. Atomdagi elektronlar to`plami nima deb ataladi?
a) proton
b) neytron
c) elektron qobiq
d) elektron pog`ona

4. Guruhlarda element tartib raqami ortishi bilan:
a) metallmaslik xossalari kuchayadi
b) metall xossalari kamayadi
c) metall xossalari kuchayadi
d) metallmaslik xossalari yo`qoladi

5. Qo`rg`oshinning (Pb) nechta izotopi mavjud?
a) 2 ta
b) 4 ta
c) 6 ta
d) 3 ta

6. Qaysi holatda AL(OH)3 olish mumkin?
a) AlCl3+NaOH=
b) Al+H2SO4=
c) AlCl3+H2O=
d) Al2O3+KCl=

7. Tabiatda nometallar nechta?
a) 20 ta
b) 22 ta
c) 30 ta
d) 50 ta
8. Nometallar metallar bilan birikib qanday bog`lanishli birikmalar hosil qiladi?
a) kovalent qutbli
b) kovalent qutbsiz
c) ion
d) a va b javoblar to`g`ri

9. Qaysi birikmada azot -3 oksidlanish darajasiga ega?
a) N2O
b) N2O3
c) N2
d) NH3

10. Metallar uglerod bilan ta`sirlashib qanday modda hosil qiladi?
a) karbid
b) asetilan
c) disian
d) karborund

11. CO2 qaysi elementlar (birikmalar) bilan reaksiyaga kirishmaydi?
a) H2O
b) CaO
c) O2
d) NaOH

12. Metallmaslarning vodorodli birikmalar qaysi qatorda ko`rsatilgan?
a) SO2; P2O5
b) HCl; NH3
c) N2O5; CH4
d) NO2; SO3

13. Qaysi holatda Ca(HCO3)2 olish mumkin?
a) NaCO3+CO2+H2O=
b) H2CO3+CaO=
c) CaCO3+CO2+H2O=
d) CaCO3+HCl=

14. Gidrokarbonatlar qatorini toping?
a) K2CO3; BaCO3; H2CO3
b) NaHCO3; KHCO3; Ca(HCO3)2
c) (NH4)2CO3; MgCO3; Na2CO3
d) CaCO3; Ca(OH)2; ; Mg(HCO3)2

15. X(OH)2=121 X-qaysi element?
a) Sr
b) Al
c) Br
d) Te

16. F(O(Cl(N(S(C(P(H(Si qatorida elementlarning elektronlarni biriktirib olish xususiyati qanday o`zgaradi?
a) o`zgarmaydi
b) kamayib boradi
c) ortib boradi
d) susayadi

17. Kremniyning nisbiy atom massasi nechaga teng?
a) 28,086
b) 2,34
c) 19,020
d) 25,035

18. Qizdirilganda kremniy (Si) xlor bilan ta`sirlashib qanday modda hosil qiladi?
a) SiO2
b) SiBr4
c) SiCl4
d) SiS2

19. Metakremniy (H2SiO3) qizdirilganda qanday moddalarga parchalanadi?
a) Na2SiO3 va H2O
b) SiO2 va H2O
c) SiO3 va H2
d) SiO2 va H2O va CO2

20. Kremniyning qaysi birikmasi gidrolizga uchraydi?
a) SiCl4+2H2O=Si2O+4HCl
b) Si+2Mg=Mg2Si
c) SiO2+4HF=2H2O+SiF4(
d) SiO2+Na2CO3=CO2+Na2SiO3

9-sinflar variant Test kaliti

1. B 11. C 2. A 12. B 3. C 13. C 4. C 14. B 5. B 15. A 6. A 16. B 7. B 17. A 8. C 18. C 9. D 19. B 10.A 20. A

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