1. Faqat metallardan tashkil topgan qatorni aniqlang. A rubidiy, stronsiy, kobalt, titan


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1. Faqat metallardan tashkil topgan qatorni aniqlang.
A) rubidiy, stronsiy, kobalt, titan
B) azot, oltingugurt, bor, fosfor
C) uglerod, berilliy, kalsiy, kremniy
D) simob, astat, fransiy, fosfor
2.Elektronlar soni bir xil bo‘lgan zarrachalarni aniqlang.
1) Cr6+; 2) P-3; 3) Mn+7; 4) Fe2+; 5) Fe3+ ; 6) S2- ; 7) Ca2+; 8) Ar; 9) Se2+; 10) Si-4;
11) Br -; 12) Cl-
A) 1,2,4,6,8,9,10,11
B) 3,4,5,8,10,11,12
C) 1,2,3,6,7,8,10,12
D) 5,6,7,8,9,11,12

3.Berilgan yo‘nalishda moddalarning tarkibidagi elektron, proton va neytronlar yig'indisi qanday o’zgarishini aniqlang?


a) ortadi b) kamayadi d) o'z garm aydi SiH4 N2O CO2 N2O3 O3
A) la, 2d, 3a, 4d B) 2a, la, 4b, 3a
С) 3a, 4b, la, 2d D) 4b, 3b, 2d, la
4.Faqat murakkab moddalardan tashkil topgan qatorlarni aniqlang.
1) metan, aftimiak, malaxit
2) suv, fosfin, azot
3) ozon, olmos, grafit
4) karbin, oq fosfor, marganes
5) malaxit, marmar, suv
A) 1,2 B) 1,5 C) 3,4 D) 4,5
5.Quyidagi birikm alarning qaysi birida marganesning oksidlanish darajasi + 4 ga teng?
A) KMnO4 В) M nO2
C) MnSO4 D) Mn2O3
6.Alyuminiy nitrit tarkibidagi azotning valentligi oksid­lanish darajasini ko‘rsating.
A) 5, +5 B) 4, +5 C) 3, +3 D) 3, +5
7. Tarkibida azotning massa ulushi 63,63%, kislorodniki esa 36,37% bodgan azot, oksidining formulasini kohsating.
1)N2O 2) N2O3 3) N2O5 4) NO 5) NO2
A) 3 B) 4 C) 2 D) 1
8. 40,5 gr alyuminiydagi modda miqdorini aniqlang
A) 1,5 mol B) 2 mol C) 3 mol D) 2,5 mol
10. 8,8 g CO2 hajmini (n.sh.) litrda toping.
A) 4,48 B) 2,24 C) 8,96 D) 11,2
11.Zichligi 2,142 gr/1 bo'lgan gazni aniqlang
A) azot B) kislorod
C) ozon D) neon
11. Azot (III) oksidining geliyga nisbatan zichligini aniqlang.
A) 19 B) 20 C) 0,0526 D)15
13.KC1 ning 4 mol miqdorida nechta molekula bor?
A) 3,01∙1024 B) 12,04∙1023
C) 24,08∙1023 D) 3,01∙1023
14.12,04∙1023 ta azot molekulasi n.sh.da necha litr hajmni egallaydi?
A) 11,2 B) 22,4 C) 33,6 D) 44,8
15.6,96 gr Fe2(SO4)3∙10H2O da nechta vodorod atomi bor?
А) 44∙1022 B) 13,2∙1022
С) 14,4∙1022 D) 16∙1022
16. Kaolinning 0,2 mol miqdorida nechta atom mavjud?

А) 1,204∙1023 В) 20,468∙1023


С) 18,06∙1023 D) 30,702∙1023
17.Noma’lum gazning 11,2 l(n.sh.) tarkibida 3,01∙1024 ta proton bo‘lsa, uni aniqlang?
A) NH3 В) CO C) NO D) PH3
18. Quyida keltirilgan m olekulalarni ularning tarkibida­gi proton, neytron va elektronlar yig‘indisi ortib borishi tartibida joylashtiring. 1) N2O; 2) NO; 3) N2O3;
4) NO2; 5) N2O5.
A) 5,1,4,3,2 B) 2,3,1,4,5
C) 5,3,4,1,2 D) 2,1,4,3,5
19.Izotop (a), izobar (b) va izoton (c) larni tanlang. 1) Ti-51; 2) V-51;
3) Cr-51; 4) C r-52; 5) Cr-55; 6) Mn-53.
A) a-3,4,5; b-1,2,3; c-2,4,6
B) a-1,2,3; b-3,4,5; c-2,6
C) a-1,2,3; b-3,4,5; c-2,4,6
D) a-3,4,6; b-1,2,3; c-2,4,6
20.Berilgan yo‘nalishda m oddalar tarkibidagi elektron, proton va neytronlar yig‘irldisi qanday o‘zgarishini aniqlang.
AlF3 CO2 P2O3 CS2
a) kamayadi; b) ortadi
A) lb, 2a, 3b B) la, 2a, 3a
C) la, 2b, 3a D) la, 2b, 3b
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