Tlar to'plami kimyo fanidan mavzulashtirilgan testlar mega to'plami

A)-l,+7 B) -2, +5
C) -3, +5 . D) -4, +4
Valentlik. Oksidlanish darajasi. 35
23. Ammiak, gidroksilamin (NH2OH), nitrit va nitrat
kislotalardagi azot atomining oksidlanish darajalarini
ko'rsating.
. A) -3,-l,+3,+5 B) -3,0,+l,+4
C) +3,+l,+3,+5 : D) -2,+1,0,+3
24. Quyidagi keltirilgan elementlarning namoyon qilishi
mumkin bo'lgan eng kichik oksidlanish darajalari qiymatlarini
ko'rsating.
1. tellur; 2. germaniy; 3. fosfor;
4. azot; • 5. xlor;
A) -2,-4,-3,-3,-1 B) -3,-8,-3,-3,-1
C) -2,-5,-3,-3,-1 D) -1-4,-3,-2,-2
25. Qaysi birikmada xlor atomining valentligi va oksidlanish
darajasi yuqori bo'ladi?
A) vodorod xloridda B) xlor(III) oksidda
C) bor xloridda D) perxlorat kislotada
26. Quyidagi keltirilgan birikmalarning qaysi birida
Mn+6 oksidlanish darajasini namoyon qiladi?
A) MnO2 ' B) MnSO4
C) K2Mn04 ' D) KMnO4
27. Bertolle tuzida xlorning oksidlanish darajasi nechaga
teng?
A) -1 B) +5 C) +3 D)+4
28. Vodorod peroksidda vodorodning oksidlanish darajasi
nechaga teng?. \ , .
A) +1 B) +2 C) - I D ) -2
29. Na2B4O7 moddasida borning oksidlanish darajasini
aniqlang. . , . -
A) 0 B) +1 " C) + 3 D) +2.
30. Galogenlar uchun (ftordan tashqari) qaysi oksidlanish
darajalari mavjud? ..''.'.:
' A) +l,.+3, +5 , B) -1,+1, +3, +5, +7 • -.
C) -1, +3, +5, +7 D) +1, +5, +7
31.. H2C2O4 va NaCN da uglerodning oksidlanish darajasini
aniqlang. . .
• A) +3, +2 B) + 2 , +4 V..- . . •
C)+4,+4 D)+3,+3
32. Azotning oksidlanish darajasi ortib boradigan qa^
torni ko'rsating.
A) NO, NO2, NH3 B) NH3, HN03, HN02
C) NH3, NO, HN03 D) KNO3, KN02, NO2
33. Dixromat anionidagi xromning oksidlanish darajasini
toping.
A) +7 B) +6 . C) + 4 \ D) +3
34. Qaysi modda tarkibidagi elementning valentligi (III)
ga, oksidlanish darajasi nol(O) ga teng?
A) vodorod B) xlor .
C) azot D) kislorod
35. Qaysi modda tarkibidagi elementning valentligi (II)
ga, oksidlanish darajasi nol(O) ga teng?
A) vodorod B) xlor
C) azot - D) kislorod
36.(2019) Qaysi birikma(lar) da fosfor III valentli hisob-:
lanadi?
1)PC15; 2)PC13; ..;V-
3)P4; 4)P2o5.
A) 2,3 B) faqat 1 C) 1,4 D) faqat 2
37.(2019) O'zgaruvchan valentlikka ega metallar keltirilgan
javobni belgilang.
A) C, Cu, Cr B) S, P, JV
G) Ag, Se,Fe . D) Cu, Fe, Co ..
38.(2019) Azotning oksidlanish darajasi mos ravishda +4,
+5, -3 bo'lgan modda (ion) lar qatorini belgilang.
A) NO-, Ca(NO3)2, NH3
' B) NO2, N2OS, NH3, •••.,•• ;.
C) JVaJVO2, NaNO3, N2O3
D) N2O3, HN03, NO3'
39.(2019) Qaysi birikmalarda metallning oksidlanish darajasi
+2 ga teng?
1) MePO4 2) MeHPO4
' 3) (MeOH) 2SO4 4) MeHSO4
A) 2,4 B) 1,3 C) 1,4 , D) 2,3
40.(2019) C2O4
2-, MnO4-, PO/- ionlaridagi C, Mn, P ning
oksidlanish darajalarini aniqlang.
A) +6, +7, +5 B) +3, +7, +5 /
C)+4,+8,+8 ' D) +3, +6, +5
41.(2019) Qaysi javobda keltirilgan elementlarning yuqori
oksidi tarkibidagi oksidlanish darajasi bir xil?
A) Cl, Br,P . B) P, S, Cl
C) Ca, Cu, Al D) S,Cr,Se .
42.(2019) Uglerodning valentligi IV, oksidlanish darajasi-
4 bo'lgan birikmani aniqlang.
A) CF4 B) CO C) CH2Br2 D) SiC
43.(2019) Ca(HCO3)2, H4P2O7, SiH4 birikmalaridagi C,
P, Si ning oksidlanish darajasini aniqlang.
A ) +4, +3,-4 •••••• B ) +3, +5,-+4 -\ - • ' '!
C) +4, +5, +4 • - D) +4, +5,^4 ' ' ••'; ::
44.(2019) Yuqori oksidlanish darajasi guruh raqamidan
katta bo'lgan elementlarni aniqlang: .
A) Ca, Hg B) Cu, Au C) JV, P D) O, F
45.(2019) Qaysi zarrachalar juftligida xlorning oksidlanish
darajasi manfiy qiyrnatga ega?
A) C104vaHCl B) ClBr3 va G1F4