Adti qoshidagi akademik litsey: Ubaydullayev Komiljon Tursunboyevich

3. Qaysi modda tarkibida elementning valentligi 3 ga oksidlanish darajasi 0 ga teng
A) O₃ B) CO C) N₂ D) O₂


4. Gidrazindagi azotning oksidlanish darajasi va valentligini toping.
A) +3, 3 B) -3,3 C) -1, 3 D) -2, 3


5. NH₄NO₃ ning parchlanishidan hosil bo’lgan N₂O tarkibidagi azotning oksidlanish darajasi qanday o’zgaradi.
A) 0 dan +1 gacha B) -3 va +5 dan +1 gacha
C) -3 dan +1 gacha D) +5 dan +1 gacha


6. CO da C ning oksidlanish darajasi va valentligini toping.
A) +2, 3 B) +2, 2 C) -2, 4 D) +2, 4

7. N₂ ning eng yuqori oksidlanish darajasi va valentligi nechchiga teng.

A) +5, 5 B) +4, 5 C) +5, 4 D) -3, 5


8. 6-guruh elementlarining eng quyi oksidlanish darajalari nechchiga teng.
A) -2 B) +6 C) -1 D) -3


9. Sianid va sianat kislota tarkibida C ning oksidlanish darajalari toping.
A) +2, +4 B) -4, +4 C) +3, +4 D) +3,-4


10. Silan tarkibida Si ning oksidlanish darajasini toping.
A) +4 B) -4 C) +3 D) -3


11. Sariq qon tuzi tarkibidagi C ning oksidlanish darajasini toping.
A) +3 B) +2 C) -6 D) -1


12. Qaysi moddada elementning valentligi uning oksidlanish darajasidan kata.
A) CO B) NH₃ C) SO₃ D) CO₂
13. Bertole tuzining katalizatorsiz parchalanishida hosil bo’ladigan birikmalardagi xlorning oksidlanish darajasini toping.
A) -1 B) +5 C) -1 va +7 D) +5 va -1


14. Qaysi birikmalarda N₂ ning oksidlanish darajalari -3 va +5 ga teng.
A) NH₄NO₃ B) NH₄NO₂
C) CO(NH₂)₂ D) N₂H₄


15. Azid kislotada azotning oksidlanish darajasi nechchiga teng.
A) -1 B) +2 C) -3 D) +5


16. Quyidagi birikmalardagi elementlarning oksidlanish darajalari va valentliklarini aniqlang: a) NO; b) NO₂; c) CO₂; d) NH₃;
e) HCl; f) SO₃; g) H₂S; h) SiO₂.


17. KMnO₄ va K₂Cr₂O₇ birikmalardagi Mn va Cr larning oksidlanish darajalarini toping.
A) +6; +6 B) +7; +7
C) +6; +7 D) +7, +6


18. Quyidagi birikmalardagi xlorning oksidlanish darajalarini toping:
a) HCl, b) HClO, c) KClO₃, d) HClO₄, e) HClO₂.
A) -1; +1; +5; +7; +3 B) +1; -1; +6; +8; +4
C) +1; +1; +5; +7; +3 D) -1; +2; +5; +7; +3


19. Quyidagi birikmalardagi azotning oksidlanish darajalarini toping:
a) NH₃, b) NH₄Cl, c) N₂H₄, d) (NH₄)₂CO₃, e) NO; f) N₂O₅; g) HNO₂; h) HNO₃.