1. Modda keltirilgan qatorni tanlang. A kitob b qoshiq c temir d probirka

1-variant

1. Modda keltirilgan qatorni tanlang.

A) Kitob B) Qoshiq C) Temir D) Probirka
2. Faqat metall keltrilgan qatorni aniqlang.

A) azot, oltintugurt, bor, fosfor.

B) rubidiy, stronsiy, germaniy, titan.

C) azot, uglerod, kalsiy, kremniy.

D) vodorod, kalsiy, uglerod, magniy.
3. 1 ta murakkab va 3 ta oddiy moddalar qatorini ko‘rsating.

A) is gazi, ozon, kislorod, fosfin-PH₃.

B) selitra, etan, benzol, atseton.

C) metan, oltingugurt, kislorod, xlor.

D) fosfin, oltin, kumush, pirit.
4. Tarkibida allotropik shakl o‘zgarishga ega bo‘lgan elementlari yo‘q bo‘lgan birikmalarni aniqlang.

A) FeCI₂, HCI, K₂S B) KCI, NaCI, K₂CO₃

C) NaCI, KF, HCI D) Zn₃P₂, CuCI₂, NaCI
5. 20 ta atomining massasi 30,876•10^-22 gr bo`lgan elementni toping.

A) Nb B) Mo C) Zr D) F

6. 20 ta brom atomining massasini kg da toping.

A) 26,56•10^-25 B) 26,56•10^-26

C) 26,56•10^-23 D) 53,12•10^-25
7. Binar birikma oltingugurt va kisloroddan iborat oltingugurtning valentligi-4, kislorodniki-2, formulani toping?

A) SO₂ B) SO₃ C) S₃O₂ D) S₂O₆

8. Karnallit – KCl∙MgCl₂∙6H₂O ning absalyut massasini toping.

A) 46,065•10^-22 gr B) 460,65•10^-24 gr

C) 460,65•10^-23 gr D) 46,065•10^-23 kg
9. 10,4 gr Metafosfat kislota– HPO₃ ning modda miqdorini toping.

A) 0,12 B) 0,14 C) 0,13 D) 0,17

10. 9,6 mol oddiy superfosfat -Ca(H₂PO₄)₂•CaSO₄ ning massasini kg da toping.

A) 35,52 B) 3,552 C) 8,128 D) 0,864

11. 0,18 moli 15,3 gr keladigan moddani toping.

A) NaOH B) HNO₃ C) NaNO₃ D) Na₂SO₃

12. 52 gr H₂Te-Tellurid kislotada nechta molekula bor.

A) 2,408•10²⁶ B) 2,408•10²³

C) 24,08•10²³ D) 12,04•10²³
13. HPO₃-Metafosfat kislotaning ta molekulasining massasini kg da toping.

A) 4,8 B) 480 C) 0,48 D) 0,864

14. 0,4 mol moddada nechta molekula bor.

A) 2,408•10²⁶ B) 2,408•10²³

C) 24,08•10²³ D) 12,04•10²³
15. 75,6 grammida ta molekulasi bo`lgan moddani toping.

A) NaOH B) HNO₃ C) NaNO₃ D) Na₂SO₃

16. 24,8 kg n.sh dagi oltingugurt (VI) oksid-SO₃ gazining hajmini m³ da toping.

A) 67,2 B) 69,44 C) 6,944 D) 6,72

17. 26,88 ml n.sh dagi gazning molekulalar sonini toping.

A) 7,224•10²³ B) 7,224•10²⁰

C) 72,24•10²⁰ D) 7,224•10²⁶

18. HNO₃-Nitrat kislotaning 27,09•10²² ta kislorod atomi bo`lsa, uning massasini gr da toping.

A) 18,9 B) 0,945 C) 9,45 D) 94,5

19. 4,48 m³ n.sh dagi azot (IV) oksid-NO₂ gazidagi kislorod atomlari sonini toping.

A) 2,408•10²⁶ B) 1,204•10²³

C) 3,612•10²⁶ D) 2,408•10²³
20. n.sh dagi SO₂ gazining zichligini kg/m³ da toping.

A) 1,062 B) 2,857 C) 3,571 D) 2,564

21. D(CH₄)=1,75 bo`lgan gazning 2,8 gr mi (n.sh da) qancha hajmni (l da) egallaydi.

A) 22,4 B) 2,24 C) 1,12 D) 6,72

22. Oddiy superfosfat -Ca(H₂PO₄)₂∙CaSO₄ tarkibidagi kislorodning massa ulushini toping.

A) 0,52 B) 0,36 C) 0,17 D) 0,22

23. Modda tarkibida massa ulushlari 1,18% vodorod, 42,01% xlor va 56,81% kislorod bo‘lsa, modda formulasini toping.

A) HCIO₄ B) HCIO C) HCIO₃ D) HCIO₂

24. I valentli element gidridi tarkibidagi vodorodning massa ulushi 2,5% bo`lsa, elementni aniqlang.

A) Na B) K C) Rb D) Cu

25. Quyidagilardan fizikaviy hodisalarni aniqlang.

A) qirovning hosil bo‘lishi

B) shamning yonishi

C) qizdirilgan shakarning qorayishi

D) temirning zanglashi
26. Yuqori oksidi EO₃ formulaga ega bo‘lgan va vodorod bilan 1,538% vodorodli birikma hosil qiladigan element nomini toping.

A) Se B) S C) Po D) Te

27. 80 g temir(III) gidrofosfat-Fe₂(HPO₄)₃ nechta atomdan tashkil topgan.

A) 2,408•10²⁶ B) 2,408•10²³

C) 24,08•10²³ D) 12,04•10²³
28. 58 g Fe₂(SO₄)₃10H₂O da nechta vodorod atomi bor?

A) 2,408•10²⁶ B) 2,408•10²³

C) 24,08•10²³ D) 12,04•10²³
29.Tarkibida 2,40810²⁴ dona vodorod atomlari bo‘lgan (C₃H₈) propan hajmini n.sh.l da hisoblang.

A) 11,2 B) 89,2 C) 67,2 D) 44,8

30. n.sh dagi zichligi 1,518 kg/m³ bo`lgan gazni toping.

A) C₂H₆ B) CH₄ C) C₂H₂ D) H₂S

31. H₃PO₂-Gipofosfit kislotaning ta kislorod atomi bo`lsa, uning modda miqdorini toping.

A) 0,12 B) 0,14 C) 0,13 D) 0,17

32. 0,5 mol Tetraborat kislota – H₂B₄O₇ tarkibidagi kislorod atomlari sonini toping.

A) 3,01•10²³ B) 2,107•10²³

C) 21,07•10²³ D) 12,04•10²³