9 – sinf 6-nazorat ishi

1.Qaysi birikmada temirni massa ulushi ko‘p?

1. A) FeO B) Fe₂O₃ C) FeSO₄             D) FeCl₃
2. Tarkibi quiydagicha bo‘lgan tuzni formulasini toping:Na-43,4%, C- 11,3%, O-45,6%
3. A) Na₂CO₃ B) Na₂SO₄        C) NaHCO₃              D) HCOONa

3.Metanning vodorodga nisbatan zichligini hisoblang.

A)2                 B)8                   C)5                         D)9

4. 16,25g rux xlorid kislotaning mo‘l eritmasida eritilganda ,qancha tuz hosil bo‘ladi? A)13g B)64g C)23g      D)34g

5.Temir kuyundisi Fe₃O₄dan 14g temir olish uchun n.sh.da o‘lchangan qancha hajm vodorod kerak?

1. A) 4,4 B) 7,46              C) 6,8             D) 7

6.To‘yingan uglevodorodning 1 litri (n.sh)1,964g ga teng. Uning formulasini toping.

1. A) C₅H₁₂ B) C₂H₆ C) C₃H₆                       D) C₄H₁₀
2. Etelentni formulasini toping A) C₂H₂B) C₂H₄ C)C₄H₆D) C₅H₈

8.Molekulasida bitta uch bog‘ tutgan uglevodorodlarni nomi

1. A) Alkenlar B) alkadienlar C) alkinlar     D) sikloalkanlar

9.Tabiiy kauchukni monomeri

1. A) izopren B) butadien 1,3 C) divinil      D) butadiyen1,2
2. Benzolni nisbiy molekulyar massasi qancha?
3. A) 76 B) 77           C) 78      D)106

11.Benzolni olti a’zoli xalqa ko‘rinishdagi formulasini qaysi olim taklif etgan?

1. A) Faradey B) Kekule C) Bertlo         D) Dalton

12.Tabiiy gaz tarkibiga qanday uglevodorodlar kiradi?

1. A) metan,etan,propan,butan B) aromatik
2. C) sikloparafinlar D) barcha toyingan