1- nazorat ishi Davriy jadvalda nechta oila mavjud A. 3 B. 4 S. 5



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Nazorat ishi- 4

I variant

1. 46 gr Na metalining 300 g suvda erishi natijasida hosil bo’lgan eritmadagi NaOH ning foiz konsentrasiyasini toping.

2. 275 g suvda 50 g mis kuporosi eritilishi natijasida hosil bo’lgan eritmaning konsentrasiyasini (foizda) toping.

3. masala: 300 g 5 % li va 400 g 20 % li NaCl eritmalari bir idishga solib aralashtirilishidan hosil bo‘lgan eritmaning foiz konsentratsiyasini (%) hisoblang.

4. Sulfat kislotani 5 % li eritmasini tayyorlash uchun 1005 g suvda qancha hajm sulfat angidrid eritilishi kerak?

5. 56 % li (ρ = 1,46 g/ml) H2SO4 eritmasining normal konsentrasiyasini aniqlang.


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O’qituvchi Bahosi : ____________

Nazorat ishi- 4

II variant

1. 23 gr Na metalining 300 g suvda erishi natijasida hosil bo’lgan eritmadagi NaOH ning foiz konsentrasiyasini toping.

2. 225 g suvda 50 g mis kuporosi eritilishi natijasida hosil bo’lgan eritmaning konsentrasiyasini (foizda) toping.

3 200 g 15 % li va 500 g 20 % li NaCl eritmalari bir idishga solib aralashtirilishidan hosil bo‘lgan eritmaning foiz konsentratsiyasini (%) hisoblang.

4. Sulfat kislotani 15 % li eritmasini tayyorlash uchun 850 g suvda necha gramm sulfat angidrid eritilishi kerak?

5. KOH ning (ρ = 1,286 g/ml) 30% li eritmasini normalligini toping.



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O’qituvchi Bahosi : ____________

Nazorat ishi- 5

I- variant

1. Hajmi 2 l bo’lgan idishda 4,5 mol modda miqdori 20 s o’tgandan keyin, 2,5 mollgacha kamaysa, reaksiya tezligi (Mol, l, s) da qanday bo’ladi.

2. Ammiakning katalitik oksidlanishi natijasida 4 NH3 + 5O2 4NO + 6 H2O ushb reaksiyada bosim 2 marta oshirilsa to’g’ri reaksiya tezligi necha marta ortadi.

3 Tiosulfat kislotani parchalanish reaksiyasi 30°C da 30 sek da tugaydi. Shu reaksiya 50°C da necha sek da tugaydi? = 2

4. 2. 60 °C da 2CO(g)+ O2(g) ↔ 2CO2(g)ushbu sistemaning to‘g‘ri reaksiya tezligi 3 mol/l·minga teng. Agar shu reaksiyaning harorat koeffitsiyenti 3 ga teng bo‘lsa, 90 °C dagi reaksiya tezligini (mol/litr·min) aniqlang.

5. SO + Cl2 = SOCl2 sistemasida is gazining konsentrasiyasi 0,03 dan 0,12 mol/l ga qadar, xlorning konsentrasiyasi 0,02 dan 0,06 mol/l ga qadar oshirilgan. Reaksiya tezligi necha marta ortganligini aniqlang?



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O’qituvchi Bahosi : ____________

Nazorat ishi- 5

II- variant

1. Hajmi 5 l bo’lgan reaktorda reaksiya borishi natijasida 30 sekund davomida konsentrasiyasi 6,8 molldan 3,4 mollgacha kamaysa, shu reaksiya tezligi (Mol, l, s) da qanday bo’ladi.

2. Quyidagi sistemada CH4 + 2 O2 CO2+ 2 H2O metan gazining konsentrasiyasi 3 marta va kislorod konsentrasiyasi ikki marta oshirilsa to’g’ri reaksiya tezligi necha marta otadi.

3 = 2 bo’lgan reaksiyani 20°C da tugatish uchun 2 soat ketadi. Shu reaksiyani 0,5 soatda tugatish uchun xaroratni necha C ga ko’tarish kerak?

4. Agar is gazining yonish reaksiyasining tezligi 33 °C da 0,5 mol/l·min ga teng bo‘lsa, 53 °C haroratdagi reaksiya tezligini(mol/litr·min) aniqlang. Reaksiyaning temperatura koeffitsiyenti 4 ga teng.

5.5 = 2 bo’lgan reaksiyani 30S da tugatish uchun 3 soat ketadi, shu reaksiyani 45 minutda tugatish uchun xaroratni necha S ga ko’tarish kerak?



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O’qituvchi Bahosi : ____________

Nazorat ishi- 6

I- variant

1. SO(g)+N2O(g)=SO2(g)+N2(g) reaksiyaning muvozanat konstantasi 8500S da 1 ga teng. SO va N2O ning boshlang‘ich konsentratsiyalari 2 va 3 mol/l bo‘lsa, SO2 ning muvozanat holatdagi konsentratsiyasini (mol/l) aniqlang.

2. SO2(g)+N2(g)=SO(g)+N2O (g) reaksiyaning konstantasi 8500S da 1 ga teng. SO2 va N2 ning boshlang‘ich konsentratsiyalari mos ravishda 6 va 8 mol/l bo‘lsa, ularning muvozanat holatdagi konsentratsiyalarini (mol/l) aniqlang.

3. 1. NH3+O2=N2O+N2reaksiyada kimyoviy muvozanat qaror topganda moddalar konsentratsiyalari [NN3]=0,4; [O2]=0,65; [N2O]=0,3 mol/litr ni tashkil qiladi. Reaksiya hajmi 0,005 m3 bo‘lgan idishda olib borilgan bo‘lsa, dastlabki moddalar miqdorini (mol) hisoblang.

4. 3. 3A+B=C+2D reaksiya bo‘yicha muvozanat qaror topgandan so‘ng moddalarning muvozanat konsentratsiyalari quyidagicha: [A]=0,1 mol/l, [B]=0,5 mol/l, [C]=0,03 mol/l, [D]=0,4 mol/l bo‘lsa, muvozanat konstantasini aniqlang.

5. Quyidagi qaytar sistemada 2NO2(g) 2NO(g) + O2(g) bosimning oshirilishi kimyoviy muvozanatga qanday ta’sir ko‘rsatadi?



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O’qituvchi Bahosi : ____________

Nazorat ishi- 6

II- variant

1. SO2(g)+NO2(g)=SO3(g)+NO(g) reaksiyada SO2 va NO2 ning dastlabki konsentratsiyasi 5 va 6 mol/l bo‘lsa, NO2 ning muvozanat konsentratsiyasini (mol/l) hisoblang. (KM=1)

2. A(g)+V(g)=S(g)+D(g) reaksiya hajmi 10 litr bo‘lgan idishda olib borildi. Reaksiya uchun A va V dan mos ravishda 8 va 12 moldan olingan bo‘lsa, ularning muvozanat holatdagi konsentratsiyalarini (mol/l) hisoblang (KM=1).

3. NH3(g)+Cl2(g)=N2(g)+HCl(g)reaksiya hajmi 0,009 m3 bo‘lgan idishda olib borildi. Kimyoviy muvozanat qaror topganda moddalar konsentratsiyalari [NH3]=0,4; [Cl2]=0,2; [HCl]=0,6 mol/litr bo‘lsa, boshlang‘ich moddalar miqdorini (mol) hisoblang.

4. 3A+B=C+2D reaksiya bo‘yicha muvozanat qaror topgandan so‘ng moddalarning muvozanat konsentratsiyalari quyidagicha: [A]=0,1 mol/l, [B]=0,5 mol/l, [C]=0,03 mol/l, [D]=0,4 mol/l bo‘lsa, muvozanat konstantasini aniqlang.

5. Quyidagi qaytar sistemada 2NO2(g) 2NO(g) + O2(g) bosimning oshirilishi kimyoviy muvozanatga qanday ta’sir ko‘rsatadi?



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O’qituvchi Bahosi : ____________

Nazorat ishi- 7

I- variant

1. Quyidagi reaksiyalardan oksidlanish- qaytarilish reaksiyalarning tenglamasini ajrating.

1. CaO+H2O = Ca(OH)2

2. 2H2+O2 = 2H2O

3. CuCl2+Fe = FeCl2+Cu

4. 2H2S+O2 = 2H2O+2S

5. KOH+H3PO4 = K3PO4+H2O

A) 1,2,4 B) 2,3,4 C) 1,2,3 D) 3,4,5

2. Qaytarilish jarayonini ko‘rsating.

A) [S2]2-  2S

B) [S2]2-  2S+4

C) NO2--  NO3-–

D) MnO42-- ----> MnO2

3. Quyidagi jarayonda: Cr2O7-2 + H+----> Cr3++ H2O xromning oksidlanish darajasi necha birlikka o‘zgaradi ? A) 5 B) 4 C) 2 D) 3

4. Quyidagilardan qaysilari oksidlanish jarayonini aks ettiradi ?

1) Fe  Fe2+ 2) Cl+5  Cl-1 3) S+6  S+4 4) S-2  S0

A) 2,3 B) 3,4 C) 1,4 D) 1,3

5. Quyidagi MnO4-- ----> MnO2 jarayonda marganetsning oksidlanish darajasi necha birlikka o‘zgaradi A) 5 B) 3 C) 4 D) 1

6. Quyidagi birikmalardan qaysi biri ichki molekulyar oksidlanish-qaytarilish reaksiyasida qatnasha oladi ?

A) kaliy nitrat

B) natriy nitrit

C) ammoniy bixromat

D) ammoniy fosfat

7. Moddalardan qaysi birlari eritmada bir vaqtning o‘zida ham oksidlovchi, ham qaytaruvchi xossalarini namoyon qiladi ?

1) nitrat kislota 2) vodorod sulfid 3) nitrit kislota

4) xrom (III) xlorid 5) ammiak 6) sulfit kislota

7) vodorod peroksid 8) kaliy bixromat 9) marganets (IV) oksid

A) 1,2,3,4,8 B) 2,3,4,5,9 C) 4,5,6,7,8 D) 1,6,7,8,9

8. Quyidagi moddalarning qaysilari faqat qaytaruvchi bo‘la oladi ?

1) vodorod sulfid 2) kaliy yodid 3) vodorod

4) nitrat kislota 5) ammiak 6) kaliy xlorat

7) alyuminiy 8) vodorod peroksid

A) 1,2,3,5 B) 2,3,5,7 C) 1,2,5,7 D) 3,5,7,8

9. Quyidagi reaksiyada chap tomondagi koeffitsientlar yig‘indisi nechaga teng ?

H2O2 + CrCl3 + KOH  K2CrO4 + KCl + H2 A) 13 B) 15 C) 18 D) 21

10. Quyidagi reaksiyaning barcha koeffitsientlari yig‘indisi nechaga teng ?

As2S3 + HNO3  H3AsO4 + SO2 + NO2 + H2O

A) 27 B) 38 C) 49 D) 58

11. Quyidagi reaksiyada qaytaruvchining oldidagi koeffitsientni aniqlang:

KMnO4 + H2O2 + H2SO4  MnSO4 + K2SO4 + O2 + H2O

A) 4 B) 5 C) 6 D) 7

12. Quyidagi reaksiya tenglamasining chap tomonidagi koeffitsientlar yig‘indisi nechaga teng ? K2Cr2O7 + K2SO3 + H2SO4 = Cr2(SO4)3 + K2SO4 + ...

A) 13 B) 15 C) 17 D) 18

13. Quyidagi reaksiya tenglamasining o‘ng tomonidagi koeffitsientlar yig‘indii qanchaga teng ? K2Cr2O7 + HI + H2SO4 = Cr2(SO4)3 + I2 + K2SO4 + H2O

A) 9 B) 10 C) 11 D) 12

14. Qaysi guruhdagi elementlarda oksidlovchilik xossalari eng kuchli ?

A) ishqoriy metallarda

B) ishqoriy-er metallarda

C) galogenlarda

D) lantanoidlarda

15. Quyidagi reaksiyalarning qaysilari oksidlanish-qaytarilish reaksiyalari turkumiga kiradi ?

1) HCl + NaOH = NaCl + H2O

2) H2SO4 + Ca(OH)2 = CaSO4 + H2O

3) Zn + HCl = ZnCl2 + H2

4) FeS2 + O2 = Fe2O3 + SO2

A) 1,2 B) 1,3 C) 2,3 D) 3,4



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Natija














































Nazorat ishi-8

I- variant

1. Elektroliz jarayonida kimyoviy reaksiyalarning kaysi turi sodir buladi?

A) birikish B) urin olish C) gidroliz D) almashinish

2. Kaliy xlorid eritmasini elektroliz kilganda katodda kaysi modda ajrralib chikadi?

A) kaliy B) vodorod C) kislorod D) suv E) xlor

3.Kaysi tuzning eritmasi elektro­liz­ga uchratilganda, katodda metall ajrab chikmaydi?

A) AgNO3 B) CuSO4 C) FeSO4 D) NaNO3

4. K2SO4 eritmassi elektroliz qilinsa, katodda qanday modda ajraladi ?

A) kaliy B) vodorod sulfid C) vodorod D) kislorod



5. Tarkibida 2 mol osh tuzi bo‘lgan eritma to‘liq elektroliz qilinganda, necha litr (n.sh.da) vodorod ajralib chiqadi ? [ Ar(Na)=23, Ar(Cl)=35,5 ]

A) 11,2 B) 5,6 C) 16,8 D) 22,4

6. Qaysi metall faqat elektroliz usuli bilan olinadi ?

A) mis B) temir C) alyuminiy D) xrom

7. Sulfat kislota eritmasi orqali 3 A tok kuchi 1 soat davomida o'tkazilganda ajraladigan vodorodning hajmini toping. A.11,2 B1,12 S. 2.24 D. 5,6

8.Mis sulfat eritmasi inert elektrodlar bilan elektroliz qilinganda, katod va anodda quyidagilardan qaysilari ajralib chiqadi A. Cu, H2 B. Cu, O2 S. Cu, SO2 D. H2, O2

9.Natriy sulfat eritmasi elektroliz qilinganda, katodda qanday mahsulot olinadi. 1. Kislorod 2. Vodorod 3. Natriy ishqori A. 2 va 4 B. 1 S. 3 D. 2

10. 36 gr suv to’la elektrolizga qilinganda hosil bo’lgan vodorod hajmini toping.

11. NaOH eritmasi elektroliz qilinganda anodda 2,8 l (n.sh) gaz ajralib chiqdi. Katodda ajralib chiqqan gazning hajmini (l) toping A. 22,4 B. 2,8 S. 11,2 D. 5,6

12. Na2SO4 eritmasi elektroliz qilinganda, elektrodlarda ajralib chiqqan moddalarni ko’rsating. A. Na va SO3 B. H2 va SO3 S. Na va O2 D. H2 va O2

13.Tok kuchi 8 A ga teng bo’lganda, 2 mol suvni parchalashga qancha vaqt (soat) kerak bo’ladi. A. 4,48 B. 6,45 S. 4,86 D. 1,49

14. 8 minut davomida xrom (III) nitrat eritmasi elektroliz qilinganda, katodda 1,56 gr xrom ajralgan bo’lsa, tok kuchini toping. A. 6 B.18,1 S. 14,4 D. 13,6



15. 2. Birinchi elektrolizyorda 2 mol, ikkinchi elektrolizyorda 4 mol kumush nitrat bo‘lgan eritmalar orqali 4 faradey tok o‘tganda katodlarda hosil bo‘lgan moddalar massalarini (g) (mos ravishda) aniqlang. A. 232, 432 B. 216, 432 S. 108,432 D. 232, 424

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