Tuman maktab 8 sinf o‘quvchisi

Sana___________

4- Nazorat ishi

1. Quyidagi moddalarning qaysi biri kovalent bog’lanishli birikmaga kiradi?

A) K₂O B) KCl D) K₂S C) Cl₂O

2. Qaysi moddada donor-akseptor bog’lanish mavjud?

A) H₂O B) NH₄Cl C)SO₃ D) NH₃

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

A) ionli B) qutbli kovalent C) qutbsiz kovalent D) metal bog’lanish.

4. AlCl₃ birikmasida Al ni oksidlanisli darajasi

A)+2 B)+3 C)-3 D) -l

5. Elekrtmantiyligi bir-biridan keskin farq qiladigan element atomlaridan hosil bo’lgan moddalar qatorini ko’rsating.

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,l₂

6. Quyidagi moddalarning qaysi biri ion bog’lanishli moddalarga tegishli?

A) xlorid kislota B) vodorod ftorid C) kaliy oksid D) ammiak

7. Yoritish chiroqlarida ishlatiladigan Ar izotopining yadrosida nechta proton va neytron yig’indisi bor?

A) 40 B) 14 C)18 D) 12

8. Quyidagi birikmalardan qaysi biri ion bog’lanishli birikma?

A) HBr B) KF C)F D)CO₂

9. Fosforni yuqori oksidlanish darajasi: A)+5 13)+4 C)+6 D)+7

10. Vodorod bog’lanishli moddani ko'rsating

A) suv B) vodorod C)olmos D) metan

11. Berilgan birikmalarda marganesni oksidlanish darajasini toping: K₂MnO₄. KMnO₄

A) +6; +7 B) +7; +6 C) +2 +4 D)+2 +7

12. Oksidlanish qaytarilish reaksiyani kocffisitntalar yig’indisini toping. FeS₂+O₂→Fe₂O₃+SO₂

A) 24 B)25 C) 23 D) 11

13. 21,7 g simob (II)- oksid parchalanganda n.sh.da qancha hajm kislorod hosil bo’ladi?

A) 2,24 13)5,01 C) 1,12 D)2.22

14. Fosfat kislotada fosforni oksidlanish darajasi? A)+7 B) +1 C) +2 D) +5

15 N^-3 → N⁺² qanday jarayon?

A) oksidlanish B) qaytarilish C)ham oksidlanish ham qaytarilish D) parchalanish