1. Qaysi moddaning molekulyar massasi eng kichik?

1. Qaysi moddaning molekulyar massasi eng kichik?
A) [Ca(OH)]₂SO₄ B) [Al(OH)₂]₃PO₄
C) Ca(HSO₄)₂ D) Ba(OH)NO₃
2. Modda miqdori 2.8 mol bo'lgan H2O ning massasini toping? A) 70.56 B) 50.4 C) 40.32 D) 30.24
3. 429gr kristall soda (Na2CO3 · 10H2O) modda miqdorini hisoblang. A) 1,5 mol B) 0,15 mol C) 0,75 mol D) 1 mol
4. 33,6 litr (n.sh.) bo'lgan is gazi ning modda miqdorini aniqlang. A) 0,75 mol B) 1 mol C) 1,5 mol D) 2 mol
5. 5,6 l (n.sh.) bo'lgan sulfit angidrid (SO2)ning massasini aniqlang. A) 6,4 B) 160 C) 16 D) 64
6. Modda miqdori 1 mol bo'lgan Na2SO4ning massasini toping? A) 142 B) 198.8 C) 113.6 D) 85.2
7. Agar 4,48 litr (l n.sh.) modda 5,6 gr kelsa, modda formulasini aniqlang. A) Neon B) kislorod C) ftor D) azot
8. 0,3 mol osh tuzidagi molekulalar sonini aniqlang. A) 6,02⸱1023 B) 3,01⸱1023 C) 12,04⸱1023 D) 1,806⸱1023
9. Modda miqdori 0.1 mol bo'lgan CO2 ning massasini toping? A) 6.16 B)3.52 C) 4.4 D) 2.64
10. 0,15 mol nitrat kislotadagi molekulalar sonini aniqlang. A) 9,03⸱1022 B) 9,03⸱1023 C) 18,06⸱1022 D) 1,806⸱1023
11. 0,125 mol osh tuzidagi atomlar sonini aniqlang. A) 0,125⸱NA B) 0,75⸱NA C) 0,5⸱NA D) 0,25⸱NA
12. Molekulalar soni 5,418⸱1023 ta bo'lgan fosfinning hajmini (l n.sh.) aniqlang. A) 13,44 B) 17,92 C) 20,16 D) 15,68
13. Normal sharoitda 112 l kisloroddagi molekulalar sonini aniqlang A) 12,04·1024 B) 3,01·1022 C) 3,01·1024 D) 12,04·1022
14. 5,2 gr nomalum modda 0,2 mol kelsa,nomalum modda molekulyar massasini toping.
A) 52 B) 26 C) 39 D) 36
15. 39 gr nomalum modda 0,5 mol kelsa,shu moddani massasini toping.
A) 78 B) 80 C) 75 D) 39
16. Berk idishga 14 gr yarim mol gaz berkitilgan. Shu idish ichidagi noma’lum gaznining molekulyar massasini aniqlang.
A) 14 B) 42 C) 28 D) 56
17. 8,5 gr natriy nitrat (NaNO₃) ning modda miqdori (mol) ni hisoblang
A) 0.3 B) 0.05 C) 0.2 D) 0.1
18. 1,5 mol natriy peroksid (Na₂O₂) necha gr keladi?
A) 147 B) 156 C) 78 D) 117
19. 0,25 mol kaliy gidroksid (KOH) ning massasini gr hisoblang.
A) 15 B) 40 C) 28 D) 14
20. Quyidagi moddalarning qaysi birining massasi 115 ga teng?
A) Al(H₂PO₄)_{3 B)} Al₂(HPO₄)_{3 C)} Al(OH)Cl₂ D) Ba(HSO₄)₂
21. Izotoplarning qaysi qiymatlari bir xil bo‘ladi?
1) protonlar soni; 2) neytronlar soni;
3) elektronlar soni; 4) yadro zaryadlari;
5) atomlarining massasi
A) 1, 2, 5 B) 1, 3, 4 C) 1, 3, 5 D) 2, 5
22. 1) ; 2) ; 3) atomlarini mos ravishda a) izotop; b) izoton; c) izobaralarga ajrating.
A) a-1, 2; b-1, 3; c-2, 3 B) a-1, 2; b-2, 3; c-2, 3
C) a-1, 3; b-2, 3; c-1, 2 D) a-2, 3; b-1, 2; c-1, 3
23. Molekulalar soni 4,214⸱1023 ta bo'lgan is gazining hajmini (l n.sh.) aniqlang. A) 13,44 B) 17,92 C) 20,16 D) 15,68
24. Izotonlarning qaysi qiymatlari bir xil bo‘ladi?
1) protonlar soni; 2) neytronlar soni; 3) elektronlar soni; 4) yadro zaryadlari; 5) atomlarining massasi
A) 2, 5 B) 1, 3, 4 C) 1, 3, 5 D) 2
25. p=55; n=72; e^- =? Ar=? E-?
26. Ar=56; n=29; p=? e^- =? E-?
27. Qaysi javobda o’zaro izobar bo’lgan atomlar keltirilgan?
A) ¹⁶O; ¹⁷O; ¹⁸O B) ⁴⁰Ca; ⁴⁰Ar C) ⁵¹V; ⁵²Cr D) ³¹P; ³⁵Cl
28. ⁵⁵Mn va ⁵⁶Fe atomlari o’zaro bir biriga nisbatan nima hisoblanadi?
A) izotop B) izoton
C) izobar D) ularda o’zaro o’xshashlik yo’q
29. Allotropik shakl o’zgarishni namoyon etadigan elementlar qatorini ko’rsating.
A) oltingugurt, ftor, yod, rux
B) tellur, kislorod, bariy, bor
C) xlor, azot, brom, simob
D) fosfor, qalay, selen, oltingugurt
30. Qaysi qator faqat valentligi o’zgaruvchan elementlardan iborat?
A) K, C, S, N, P, Fe; B) Cu, Ba, N, Cl, Br, Cr;
C) C, Cr, Cu, P, S; D) Ca, Cu, C, H, F, O;