Oraliq nasorat -2 (ON-2) 1-kurs 6.12.14
Variant -1
1.Gipofosfit kislota molekulasida kimyoviy bog’lar sonini toping? A. 4 B.6 C. 10 D. 8 E. 5 (H3PO2)
2.Donor- akseptor bog’lar soni quyidagi molekulalarda kamayib borish tartibini toping. 1. Azot(IV)-oksidi 2.uglerod (II)- oksidi 3.tetraaminmis(II)- sulfat 4. qizilqon tuzi. A. 1,4,3 B. 4,3,2,1 C. 2,1,3,4 D. 4,3,1,2 E.3,4,1,2.
3.Molekulyar kristal panjarali tuzilishga ega bolgan moddalar qatorini toping? 1. Olmos 2. Grafit
3.ko’mir 4. osh tuzi 5. karbamid 6. Uglerod 7.mis 8. Yod 9. ftor 10. karbonat angidrid
A. 1,2,3,5 B. 4,5,6,8 C. 5,7,8,10 D. 3,5,9,10 E. 5,9,8,10
5.Elektron konfigurasiyasi keltirilgan qaysi element o’zining birikmalaridan birida donor- akseptor bog’ini hosil etishi mumkin. 1) 1s2 2) 1s1 3). !s22s22p2 4.)1s22s22p3 5). 1s22s1 A. 1,5 B. 2,3 C.2, 4 D. 1,2 E. 3,5
6. 1. Kaliy ftorid 2. Bariy xlorid 3.oltingugurt 4. Yod 5. Kremniy karbiddagi kimyoviy bog’lanish qanday?
A. 1,2-ion ; 3,4- donor-aksertor; 5- qutbsis kovalent B. 1,2 va 5 –ion; 3,4- kovalent
C. 1,2- metal; 3,4-kovalent; 5- ion D. 1-ion; 2,5- qutbli kovalent; 3,4 – donor-akseptor bog’
E. 1,2 –ion ; 3,4 –qutbsis kovalent; 5- qutbli kovalent
7.Qaysi molekulalarda atomlar qutbli kovalent bog’ vositasida bog’langan? 1) vodorod oksid 2) azot
3).vodorod xlorid 4). Kaliy bromid 5)ammiak 6). Ftor A. 1,3,5 B. 2,4,6 C. 1,3,4 D. 2,5,6 E. 1,4,5
8.Atomlarning qaysi xossasi uning hosil qilgan bog’i tabiatini belgilaydi?
1). Atomning elektron berish qobiliyati 2). Valentligi 3).Atomning elektron olish xususiyati 4 ).elektromanfiyligi 5).atom massasi A. 1,3,4 B. 1,2,3 C. 1,2,4 D. 2,3,4 E. 3,4,5
9.Donor-akseptor bog’ qaysi moddada bor ? A. CaS B. CH4 C. CO2 D. NH4CI E. NaI
10.Kovalent bog’ ning qutbliligi kamayib boradigan qatorni ko’rsating? A. PH3, PCI3, PBr3
B. H2O, H2S, HF C. HCI, HI, HBr D. CF4, CCI4 CBr4 E. H2S, PH3 ,PCI3
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