8-sinf 4- Nazorat ishi (test)

1. Quyidagi moddalarning qaysi biri kovalent bog`lanishli birikmaga kiradi?
2. A) K₂O B) KCl D) K₂S              C) Cl₂O
3. Qaysi moddada donor-akseptor bog`lanish mavjud?
4. A) H₂O B) NH₄Cl C) SO₃               D) NH₃

3.H∙ + ∙Cl →H : Cl  ushbu bog`lanish qaysi turga kiradi?

1. A) ionli B) qutbli kovalent  C) qutbsiz kovalent  D) metal bog`lanish.
2. AlCl₃ birikmasida Al ni oksidlanish darajasi: A) +2 B) +3 C) -3 D) -1
3. Elekrtmanfiyligi bir- biridan keskin farq qiladigan element atomlaridan hosil bo`lgan moddalar qatorini ko`rsating.
4. A) NaCl, K₂S , BaCl₂,CaF₂,Li₂O, MgO B) HCl, Na, KCl,PCl₃, CH₄

C)Al,Zn,HBr,H₂O, PCl₃                                                                  D) Fe,Li,Cu,Na,N₂,O₂,I₂

6. Quyidagi moddalarning qaysi biri ion bog`lanishli moddalarga tegishli?
7. A) xlorid kislota B) vodorod ftorid  C) kaliy oksid  D) ammiak
8. Yoritish chiroqlarida ishlatiladigan Ar izotopining yadrosida nechta proton va neytron yig`indisi bor? A) 40                 B) 14                 C) 18             D) 12
9. Quyidagi birikmalardan qaysi biri ion bog`lanishli birikma?
10. A) HBr B) KF C) F₂             D) CO₂

9.Fosforni yuqori oksidlanish darajasi:            A) +5              B) +4                  C) +6            D) +7

10. Vodorod bog`lanishli moddani ko`rsating
11. A) suv B) vodorod C) olmos           D) metan
12. Berilgan birikmalarda marganesni oksidlanish darajasini toping: K₂MnO₄, KMnO₄ A)  +6; +7             B) +7; +6             C) +2; +4            D) +2; +7
13. Oksidlanish – qaytarilish reaksiyani koeffisientalar yig`indisini toping.

FeS₂  + O₂ → Fe₂O₃ + SO₂                       A) 24            B) 25            C) 23             D) 11