Shofirkon tuman 1- umumiy o’rta ta’lim maktabining – “ ” sinf o`quvchisi

Sana: ___________________________
7-Nazorat ishi.
Mavzu: I guruh yonaki guruhcha elementlari. II guruh yonaki guruhcha elementlari.
Marganes, temir
Nazorat shakli:Test.
1.Al₂O₃*nH₂O ushbu modda nomi berilgan qatorni toping.
A)korund B)boksit S)kaolin D)nefelin
2.Aluminiytermiya usulini kim kashf etgan?
A)A.M.Butlerov B)N.N.Beketov S)M.Lamonosov D)P.Uilard
3.Reaksiya unumi 90% bo’lgan 5,1gr Al₂O₃ elektroliz qilib necha gr Al olish mumkin?
A)2,43gr B)2,7gr S)5,4gr D)1,35gr
4Xrom (VI)-oksid qanday oksid turiga kiradi?
A) asosli B)kislotali S)Amfoter D)A va B
5.Cr+HCl=? Cr+Cl₂=? .xromning qanday birikmalari hosil bo’ladi?
A )CrCL, CrCL₂ B)CrCl₂, CrCl₃ S)CrHCL,CrCl D)reaksiya bormaydi
6.Cr elementini kim kashf etgan?
A) Berselius
B) L.Vaklen
S) X.K.Ersted
D)A.M.Butlerov.
7.Mis atomining s va d elektronlar soni berilgan qatorni toping.
A)8;9 B) 9;10 S)7;10 D) 6;8
8. 3Cu + 8HNO_3(suyl) =3Cu(NO₃)₂+ 2NO+ 4H2O
reaksiya tenglamasining koeffitsiyenti yig’indisi nechaga teng?
A)20 B)22 S)12 D)24
9.Cr ning tashqi d qobig’ida nechta elektroni bor?
A)4ta B)5ta S)6ta D)2ta
10.Mn ning qaysi oksidi kislotalik xususiyatiga ega?
A)Mn₂O₃ B)MnO₃ S)Mn₂O₇ D)B va S
11.8gr Cu ga konsentrlangan nitrat kislota ta’sir ettirilganda (n.sh.da) l gaz ajraladi?
A)5,6 l B)11,2 l S)2,24 l D)56 l
12.Oltin qaysi modda bilan reaksiyaga kirishadi?
A)mis kuporosi B) zar suvi S) xlorid kislota D)sulfat kislota
13.NaOH +Zn(OH)₂=…………
A)Na₂[Zn(OH)₂] B)Na₂[Zn(OH)₄] S)NaZn(OH)₂ D)Na₂ZnO₂
14.Cr ning amfoter oksidi berilgan qatorni toping.
A)Cr₂O₃ B)CrO S)CrO₃ Cr₂O₂
15.K₂Cr₂O₇ dagi Cr ning oksidlanish darajasini aniqlang.
A)+6 B)+3 S)+5 D)+7
16. Quyidagi o’zgarishlarni amalga oshiruvchi reaksiya tenglamalarini yozing.
Cr→Cr(OH)₃→Cr₂O₃→Cr→CrCl₃
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17.Tarkibida 10% qo’shimchalar bo’lgan 10 gr Cr₂O₃ dan necha gr Cr olish mumkin? _____________________________________________________________________________________________________________________________________________________________________________________________________________________
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18.Au ning olinish usullarini yozing. ______________________________________________________________________________________________________________________________________________
Kompetentlikni aniqlash uchun materiallar:
19. Ko’pincha tarkibida temir saqlovchi dorilar nima maqsadda ishlatiladi va temir saqlovchi qanday dorilar nomini bilasiz?
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20.Oltin bilan tilloni farqlab bering? ______________________________________________________________________________________________________________________________________________
21.Temir atomining oxirgi d elektronlarini kvant sonlarda ifodalang._________________________________________________________________________________________________________________________________________________________________________________________________________________

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