Mis tuzining suvdagi eritmasi orqali 2,68 soat davomida 5 a tok kuchi o’tkazilsa, necha gramm mis metali ajralib chiqadi? Tokka nisbatan unum 80%

KIMYO

1. 
   200 g 40 % li mis (II) sulfat eritmasi to’liq
   23
   
   

elektroliz qilinganda tarkibida 114,38·10 ta atom tutgan eritma hosil bo’ldi. Necha gramm suv elektrolizga uchraganini niqlang. A) 18 B) 27 C) 54 D) 9

2. 
   Popov qoidasiga ko’ra, 5-metilgeksanon-3 oksidlanishidan qanday moddalar hosil bo’ladi?
   
   1. 
      chumoli kislota va 2-metilpropion kislota yoki atseton va sirka kislota
      
   2. 
      chumoli kislota va propion kislota yoki 2 mol sirka kislota
      
   3. 
      sirka kislota va 3-metilbutan kislota yoki propin kislota va 2-metilpropion kislota
      
   4. 
      atseton va propin kislota yoki 2- metilpropion kislota va sirka kislota
      
3. 
   85% li 320 g sulfat kislotaga qancha ^{m3 } oltingugurt (VI)-oksid shimdirilsa, ^SO3 ^{ H}2^SO4 ^{tarkibli oleum hosil bo’ladi?}
   

A) 1,12 B) 0,18 C) 0,56 D) 2,24

4. 
   Adenindagi ixtiyoriy 3 ta vodorod atomi metil guruhiga almashsa, uning m.a.b qancha bo’ladi?
   

A) 163 B) 183 C) 177 D) 178

5. 
   200 g 25% li ^MeBR eritmasi brom chiqishi tugaguncha elektroliz qilinganda 14,18% li eritma hosil bo’ldi. Eritma qaysi metall tuzidan tayyorlangan.
   
   1. 
      ^K B) ^Li C) ^Na D) ^Rb
      

6. Idishda 40 kg 25% li eritma bor. Dastlab eritmadan 20% I olindi, keyin qolgan eritmaning 10% I olindi. Idishda qolgan eritmaning massasi 40 kg bo’lguncha suv quyildi. Hosil bo’lgan eritmadagi tuzning massasini (g) aniqlang.

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

7. 
   72g Au va Al dan iborat aralashma suyultirilgan nitrat kislota bilan reaksiyaga kirishdi. Hosil bo’lgan eritma o’yuvchi natriy eritmasi bilan ta’sirlashdi. Ajralib chiqqan gaz modda 43,2 g FeO bilan qizdirilganda reaksiyaga kirishish ma’lum bo’lsa, dastlabki aralashmadagi oltinni massasini (g) aniqlang. (Alyuminiy nitrat kislota bilan to’liq reaksiyaga kirishadi deb hisoblang.)
   

A) 60 B) 43,2 C) 40 D) 28,8

^{kontsentratsiyalari (molь/l): [CO]=0,3;[H}2<sup>O]

=0,4; [CO</sup>2^]=0,4va[H2^{]=0,05 ga teng bo’lgan.} Sistemaning muvozanati o’ngga siljitilda va bunda uglerod(II) oksidning 1/3 qismi reaktsiyaga kirishdi. SHunda moddalarning kontsentratsiyalari qanday bo’ladi?

A) 0,20; 0,30; 0,30; 0,100

B) 0,10; 0,20; 0,20; 0,025

C) 0,20; 0,30; 0,50; 0,15

D) 0,15; 0,25; 0,55; 0,200

9. 
   To’yingan bir atomli spirt tarkibida kislorodning massa ulushi uglerod va vodorodning birgalikdagi massa ulushidan 29/8 marta kichik bo’lsa, uglerodning massa ulushini aniqlang.
   

A) 24/37 B) 3/5 C) 12/23 D) 3/8

9. 
   Dimetilasetilen va siklobutendan iborat 5 litr (n.sh.) aralashma va mo’l miqdorda olingan kislorodda portlatilgandan, so’ng hosil bo’lgan suv bug’i kondensatsiyalandi. Qolgan gazlar aralashmasi 301 (n.sh.) ni tashkil etsa, reaksiya uchun olingan kislorodning hajmini (l.n.sh.) toping.
   

A) 37,5 B) 27,5 C) 10 D) 42,5

9. 
   Qattiq moddalar holida eng yumshoq hisoblangan grafit lotinchadan qanday ma’noni bildiradi?
   
   1. 
      qattiq B) qavat-qavat
      

C) iz qoldiraman D) yumshoq

9. “n” ta uglerod atomi tutgan alken molekulasini hosil qilishda qatnashgan umumiy bog’lar sonini hisoblashda qaysi formulani qo’llash mumkin?

A) 3n B) 3n-1 C) 4n-8 D) 6n

9. 
   Oppanol polimerining tarkibi qanday moddadan iborat?
   
   1. 
      polistirol B) polipropilen
      

C) poliizobutilen D) polivinilxlorid

9. 
   ^{X g va Y g eritmalari tarkibidagi H}2^SO4 ^ning massalari nisbati 1,5:1 ni, massa ulushlar nisbati 1:2 ni tashkil etadi. X va Y ning massa nisbatini aniqlang.
   

A) 1:4 B) 3:1 C) 5:1 D) 1:1

9. 
   Quyidagi birikmalarni yuqori molekulyar birikmalarning qaysi guruhiga kirishini moslang.
   

1. 
   sun’iy; b) tabiiy; c) sintetik; 1) lignin; 2) plasmassa;
   

1/8 ASER1 (Aser) SATT A.5.9.CTZRBO © SHAMS 2009-2020

999981 41 18.01.2020 999981 41 18.01.2020

was assumed many centuries ago that the large land mass around the North Pole ... .

1. 
   could not have a counterpart in the southern hemisphere
   
2. 
   had a regular and unchanging coastline
   
3. 
   must have been balanced by a similar extent of land mass around the South Pole
   
4. 
   seemed to be impenetrable and, hence, inexplorable.
   

32. 
    It is pointed out in the passage that it was
    th
    
    

only with Captain Cook's voyage in the 18 century that ... .

1. 
   multi-national projects for the exploration of Antarctic were put into effect
   
2. 
   a partially accurate assessment of the size of the Antarctic could be made
   
3. 
   the first serious expedition into the interior of Antarctic was launched
   
4. 
   people began to realize just how small the land mass here was
   

32. 
    It is clear from the passage that, following various earlier reports concerning the Antarctic,....
    
    1. 
       the first major, large-scale discovery of the continent was undertaken by James Clarke Ross in 1841
       
    2. 
       explorers from various countries began to compete with each other for the conquest of the continent V
       
    3. 
       Edward Bransfield joined the international project to study the icepack of the continent
       
    4. 
       many explorers were discouraged from undertaking any serious exploration there
       

32. Choose the answer which correctly completes the sentence.

Isn't she the woman plays the violin in the

orchestra?

1. 
   who B) whose C) whom D) which
   

32. Choose the answer which correctly completes the sentence.

... cost of living, he was forced to move from London to somewhere more affordable.

1. 
   Owing to B) Although
   

C) In order to D) Since

32. Choose the answer which correctly completes the sentence.

The bus that … in the accident was carrying children to school.

1. 
   involved B) involve
   

C) was involved D) involving

32. Choose the answer which correctly

completes the sentence.

Their dismissal of him was perfectly legal but now they regret their

action. They wish they ... so.

1. 
   did B) had done
   

C) hadn't done D) wouldn't do

32. Choose the answer which correctly completes the sentence.

"What time do the shops close?"

The woman wants to know what time ...

1. 
   do the shops close B) the shops close
   

C) the shops closed D) did the shops close

32. 
    … you could visit another planet, would you go?
    
    1. 
       whether B) provided
       

C) suppose D) whenever

32. Choose the answer which correctly completes the sentence.

Would you like milk in your coffee? Yes, please … .

1. 
   much B) a few C) little D) a little
   

32. 
    I was hoping to deal with this matter quickly.
    

… it’s more difficult than I thought.

1. 
   however, B) however
   

C) no matter, D) no matter

32. Choose the answer.

You haven't said …, Joan - what do you think?

1. 
   much B) apart C) many more D) any of
   

32. Choose the correct answer.

Could you give me … idea of when the building work will finish?

1. 
   a few B) some C) many D) any
   

32. 
    Choose the correct answer. The receptionist … the way to the boardroom.
    
    1. 
       laid B) lied C) lead D) led
       

32.