7-sinflar uchun kimyo fanidan test savollari. Iii-chorak uchun 1-variant

7-sinf kimyo lll-chorak test savollarining javoblari

1-variant

1.B 2.D 3.D 4.C 5.B 6.C 7.D 8.D 9.D 10.D

11.H₂O,CO₂

12.Teng miqdor

13. 63

14. 11

15.ll

2-variant

11.SO_2,_CaO,SiO_2'>1.D 2.A 3.B 4.A 5.A 6.C 7.A 8.A 9.D 10.C

11.SO_2,CaO,SiO₂

13. ¾

14.Biri kislorod bo`lgan ikki elementdan iborat bo`lgan birikma.

15.NaOH, KOH

3-variant

1.A 2.A 3.B 4.C 5.A 6.B 7.B 8.C 9.D 10.D

11.SO_2,CaO,SiO₂

12.Chuchuk suv

13.400l

14.ll,lll

15.NaOH,KOH

7-sinflar uchun kimyo fanidan test savollari. IV-chorak uchun 2-variant

1.Bir negizli kislotalar qatorini toping.

A)H₂SO₃,H₂SO₄,H₂CO₃,H₂S B)HCl,HBr,HCN,HNO₃

C)H₃PO₄,H₃BO₄,H₃BO₃,H₃AsO₄D)HNO₂,HCl,H₂Cr₂,O₇,H₂SO₃

2.Rux metaliga sulfat kislota ta’sir ettirilganda qanday moddalar hosil bo’ladi?

A)rux va vodorod B)sulfat angidirid,suv C)rux sulfat, vodorod D)rux sulfat, suv

3.Oltingugurt (IV) oksid –SO₃ yana qanday ataladi?

A)nitrat kislota B)sulfat angidirid C)oltingugurt D)quruq muz

4.Ca₃(PO₄)₂ moddasining molekulyar massasini xisoblang.

A)210 g B)250 g C)300 D)310

5.Azot(III)oksidining formulasini ko’rsating.

A)NO B)N₂O₅ C)N₂O D)N₂O₃

6.Vodorodni kislotalardan siqib chiqara olmaydigan metallarni ko’rsating.

A)Li,Mg,Al,Zn B)Mn,Cr,Fe,Pb C)K,Cs,Ni,Sn D)Cu,Ag,Hg,Au

7.Akumulatorli batareyalar olishda ishlatiladigan kislotani toping.

A)karbonat kislota B)sulfat kislota C)xlorid kislota D)nitrat kislota

8.Kislotalar berilgan qatorni toping.

A)HCL,HNO₃,H₃AsO₄ B)CaO,CaCO₃,MgO C)P₂O₃,NO,CI₂O₃ D)NaOH,KOH,Cu(OH)₂

9.Quyidagi kislotalarning qaysi birida markaziy atomning valentligi beshga teng.

A)H₂SO₄ B)H₂SO₃ C)H₃PO₄ D)H₂CrO₄

10.Bo`r, marmar, ohaktosh moddalari bir xil formula bilan ifodalanadi.Bu qaysi formula?

A)AgNO₃ B)K₂CO₃ C)Na₂CO₃ D)CaCO₃

11.Kislotalar eritmasiga lakmus ta`sir ettirilganda qanday o`zgzrish kuzatiladi?

_________________________________________________________________

12.Kislotalar tarkibiga ko`ra qanday toifalarga bo`linadi?

__________________________________________________________________

13.Asoslar qanday sinflarga toifalanadi?

__________________________________________________________________

14.10g CaCO₃ni qizdirib necha g CaO olish mumkin?

___________________________________________________________________

15.Kaliy permanganate tuzining formulasini yozing.

____________________________________________________________________