1. Quyidagi xususiyatlari keltirilgan molekulalar ichidan nechtasida neytronlarga nisbatan elektronlari soni ko’p

A) 3 B) 6 C) 9 D) 12
2. HJ+H₂SO₄ ->... Ushbu reaksiyada oksidlovchining ekvivalent massasi 12,25 g/mol, qaytaruvchiniki esa 128 g/mol ekanligi ma’lum bo’lsa, koeffissentlar yig'indisini toping.
A) 9 B) 18 C) 13 D) 21
3. Quyidagi reaksiyalarning qaysi birida disproporsiallanish reaksiyasi bormaydi ? A) KCl0₃->... B) NaOH+Cl₂-> ... C) NO₂ +KOH→... D) NH₄N0₃->...
4. Quyidagi reaksiyalardan qaysi birida Mn0₂ oksidlovchilik xossasini nomoyon qilyapti ?
1) Mn0₂ +H₂S04→MnS0₄+0₂ +H₂0
2) Mn0₂ +0₂+K0H→ K₂Mn0₄+H₂0
3) Mn0₂+H₂→ MnO +H₂0
4) Mn0₂ +NaBi0₃ +HNO₃→ HMn0₄ +Bi0N0₃ +NaN0₃ + H₂0
A) 1, 3 B) 2, 4 C) 1, 3, 4 D) 1, 2, 3, 4
5. Mn0₂ +NaBi0₃ +HN0₃→ HMn0₄ +Bi0N0₃+NaN0₃+ H₂0 Ushbu reaksiyada qaytaruvchi oldidagi koeffissentni aniqlang?
A) 2 B) 3 C) 6 D) 4
6. Fe₂0₃+KN0₃+K0H → K₂Fe0₄+KN0₂+H₂0 Ushbu reaksiyada chap va o’ng tomondagi koeffissentlar ayirmasi nechaga teng.
A) 8 B) 7 С) 1 D) 3
7. FeSO₄ +KMnO₄ +H₂SO₄→ ...
Koeffissentlar yig'indisini toping. A) 20 B) 16 C) 36 D) 32
8. Teng miqdorda uglerodning konsentrlangan va suyultirilgan nitrat kislotalarda erishidan hosil bo'lgan moddalar koeffissentlari nisbatini toping.
A) 7:9 8) 6:8 C) 7:3 D) 9:7
9. H₂S+K₂Cr₂0₄ +H₂SO₄ →... O'ng va chap tomondagi koeffisentlar bir-biridan qanchaga farq qiladi ?
A) 8 B) 12 C) 20 D) 4
10. NaJ + NaJ0₃ + H₂S0₄ →… Qaytaruvchi oldidagi koeffissentni toping.
A) 1 B) 4 C) 5 D) 3
11. Quyidagiiardan qaysilari suv ajralishi bilan bormaydi ?
1) P +HN0₃+...→ H₃PO₄ + NO +...
2) P +HN0₃+...→ H₃PO₄ + N0₂ +...
3) S0₂+HN0₃+...→ H₂S0₄+N0+...
4) S0₂+HN0₃+...→H₂S0₄+N0₂ +...
5) P₄S₇ +HN0₃+...→H₃P0₄ +H₂S0₄ +N0₂+...
6) P₄S₇+HN0₃+...→H₃P0₄ +H₂S0₄ +N0+...
A) 1, 3, 6 B) 2, 4, 5 C) 1, 6 D) 2, 3, 4, 5
12. Mn(N0₃)₂+ NaBi0₃+HN0₃→
HMnO₄ + Bi0N0₃+NaN0₃ +H₂0 Ushbu reaksiyada oksidlovchi va qaytaruvchi oldidagi koeffissentlarni tanlang. A) 2; 5 B) 4; 5 C) 5; 2 D) 5; 4
13. Na₂S₂0₃+Br₂+Na0H →... Koeffissentlar yig'indisini toping.
A) 15 B) 30 C) 45 D) 5
14. KBr+KMn0₄+H₂S0₄→... Koeffissentlar yig'indisini toping.
A) 20 B) 21 C) 41 D) 32
15. Cr₂0₃+ Br₂+Na0H→... Koeffissentlar yig'indisini toping.
A) 14 B) 13 C) 27 D) 40
16. Na₂S0₃+KMn0₄+K0H→... Reaksiyada chap va o'ng tomondagi koeffissentlar ayirmasini toping.
A) 4 B) 5 С) 1 D) 2
17. NaJ+KMnO₄ +KOH→... Koeffissentlar yig'indisini toping.
A) 10 B) 11 C) 12 D) 13
18. Nitrat kislotaning yorug'lik ta'sirida parchalanish reaksiyasi koeffissentlarini ko'rsating.
A) 4; 4; 1; 2 B) 4; 1; 2; 2 C) 2; 2; 1; 2 D) 4; 1; 2; 3
19. SnSO₄ +KMnO₄ +H₂SO₄ →... Oksidlovchi va qaytaruvchi oldidagi koeffissentlarni ko'rsating. A) 2; 5 B) 5; 2 C) 10; 3 D) 3; 10
20. K₂Mn0₄+C0₂→... Reaksiya o'ng tomonidagi koeffissentlar yig'indisini toping. A) 5 B) 4 C) 10 D) 12
21. Na₂S0₃→... Ushbu reaksiya koeffissentlari yig'indisini toping ? A) 4 B) 8 C) 5 D) 12
22. Mn₃0₄+Al→ Al₂0₃ +Mn Ushbu reaksiyadagi koeffissentlar yig'indisini toping.
A) 11 B) 13 C) 24 D) 28
24. Na₂S₄O₆ + KMn0₄+HN0₃-> Na₂S0₄+H₂S0₄+Mn(N0₃)₂+KN0₃+H₂0 Reaksiya ikkala tomonidagi koeffissentlar yig’indisini toping.
A) 112 B) 115 C) 120 D) 128

25. Мn₃О₄ +КСlO₃ +К₂СО₃→... Ushbu reaksiyadagi koeffissentlar yig'indisini toping. A) 32 B) 35 C) 40 D) 42

26. As₂S₃+HNO₃→H₃AsO₄+SO₂+N0₂+H₂0 Ushbu reaksiyadagi koeffissentlar yig'indisini toping.
A) 50 B) 56 C) 58 D) 54
27. FeCl₂+KMnO₄ +HCl→... Reaksiya koeffissentlari yig'indisini toping.
A) 48 B) 56 C) 60 D) 64
28. KN0₂+KJ+H₂S0₄→... Oksidlovchining koeffissentini toping.
A) 2 B) 7 C) 4 D) 3

29. Cl₂+Br₂+KOH→... Koeffissentlar yig'indisini toping.

A) 18 B) 24 C) 36 D) 40

30. NH₃+KMn0₄+K0H→... Koeffissentlar yig'indisini toping.

A) 18 B) 15 C) 28 D) 33


31. Ti₂(S0₄)₃+KCl0₃ +H₂0→ Ti0S0₄+KCl+H₂SO₄ Ushbu reaksiyada koeffissentlar yig'indisini toping.
A) 14 B) 17 C) 18 D) 20

32. K₂Mn0₄+H₂0->... Reaksiya koeffissentlari yig'indisini toping.

A) 9 B) 12 C) 15 D) 18

33. Fe(N0₃)₂+Mn0₂+HN0₃->... O'ng tarafdagi koeffissentiar yig'indisini toping.

A) 5 B) 7 C) 12 D) 2

34. KNCS+K₂Cr₂0₇+H₂S0₄ →... Reaksiya koeffissentlari yig'indisini toping.

A) 170 B) 172 C) 176 D) 180

35. CuFeS₂+HN0₃(k) →... Koeffissentlar yig'indisini toping.

A) 50 B) 51 C) 53 D) 56
36. CuFeS₂+HN0₃(s) →... Koeffissentlar yig'indisini toping.
A) 70 B) 71 C) 74 D) 76

37. Quyidagilardan qaysi birida vodorod peroksid oksidlovchi xossasini nomoyon qiladi?

1) H₂0₂+HJ→...
2) H₂0₂+HJ0₃->...
3) H₂0₂+KMn0₄+HN0₃->...
4) H₂0₂ +CrCl₃+KOH->...
5) H₂0₂+H₂S->...
A) 1, 4, 5 B) 1, 2, 4, 5 C) 2, 3 D) 1, 2, 5


38. H₂0₂ +СгСl₃ +КOH→ ... Reaksiyadagi koeffissentlar yig'indisini toping.
A) 28 B) 30 C) 31 D) 35

39. H₂0₂+HJ0₃->... Reaksiyaning koeffissentlari yig’indisini toping. (oksidlovchi ham, qaytaruvchi ham oddiy moddaga o’tgan)

A) 18 B) 19 C) 20 D) 21

40. H₂0₂+H₂S→... Reaksiyaning koeffissentlari yig'indisini toping.

A) 5 B) 8 C) 10 D) 12
41. H₂0₂+KMnO₄ +HN0₃→... Reaksiya koeffissentlari yig'indisini toping.
A) 28 B) 30 C) 32 D) 34

42. Pb0₂+ HCl→... Reaksiya koeffissentlari yig'indisini toping.

A) 5 B) 7 C) 9 D) 11

43. NaN0₂ ni kaliy permanganatning kislotali, ishqoriy va neytral muhitda oksidlanish reaksiyalarida oksidlovchi oldidagi koeffissentlarni toping.

A) 5, 1, 3 B) 2, 4, 3 C) 2, 2, 2 D) 2, 3, 5
44. Cr(N0₃)₃+NaBi0₃+HN0₃→... Reaksiyada koeffisentlar yig'indisini toping.
A) 18 B) 20 C) 16 D) 21

45. NaBr+KMn0₄+H₂0→... Reaksiyada koeffissentlar yig'indisini toping.

A) 23 B) 25 C) 26 D) 28

46. Mn0₂ +KCl0₃ +KOH→... Oksidlovchi oldidagi koeffissentni toping.

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

47. FeS₂+HN0₃→NO+... Oksidlovchi oldidagi koeffissentni aniqlang.

A) 8 В) 1 C) 4 D) 18

48. Vodorod sulfidning bromli suv bilan oksidlanishida oksidlangan modda oldidagi koeffissentini aniqlang.

A) 1 B) 4 C) 5 D) 8

49. Cr₂0₃ +NaN0₃+K0H→... Qaytarilgan modda oldidagi koeffissentni aniqlang.

A) 1 B) 3 C) 7 D) 4

50. HCl +KBrO₃ +KJ→... Qaytarilgan modda oldidagi koeffissentni aniqlang.

A) 1 B) 3 C) 7 D) 6

51. Ca(Cl0)₂+Na₂S+H₂0→... Reaksiyada koeffissentlar yig'indisini toping.

A) 5 B) 12 C) 7 D) 8
52. Cu₂S+HN0₃→ N₂+... Reaksiyada koeffissentlar yig'indisini toping.
A) 11 B) 12 C) 14 D) 13


53. Na₂С₂0₄+КВг0₃ +Н₂0->... Qaytarilganmodda oldidagi koeffissentni aniqlang.
A) 1 B) 3 C) 4 D) 5

54. AgNO₃+PH₃+H₂0->... Oksidlangan modda oldidagi koeffissentni aniqlang.

A) 1 B) 3 C) 8 D) 4
55. HClO+HCl→... Ushbu reaksiyadagi koeffissentlar yig’indisini toping.