To’plam mavzularini takrorlash 1-variant

Rasmda berilgan 1- agregat holatni nomlang.
A) 1-sublimatlanish;
B) 2-qotish;
C) 3-erish;
D) 4-bug’lanish;

23. 
    Keltirilgan tenglamalardan qaysi biri parchalanish reaksiyasi? 1) LiOH+HNO₃→LiNO₃+H₂O; 2) Ca(OH)₂→H₂O+CaO; 3) NH₃+HCl→NH₄Cl; 4) CaCO₃+HCl→CaCl₂+H₂O+CO₂; 5) SO₃+H₂O→H₂SO₄ A) 2 B) 4 C) 5 D) 3
    

24. 
    5 mol atsetilen gazi normal sharoitda necha
    litr hajmni egallaydi?
    A) 89,6 B) 112,0 C) 130,0 D) 22,4
    

25. 
    33,6 litr (n.sh.) CO2 ning massasini (g)
    aniqlang.
    A) 88 B) 33 C) 66 D) 55
    

26. 
    Laboratoriya sharoitida vodorodning olinishi
    kimyoviy reaksiyaning qaysi turiga mansub?
    A) parchalanish B) o‟rin olish
    C) birikish D) almashinish
    

27. 
    Ca elementining tartib raqamini aniqlang. A)20 B)2 C)24 D)19
    

28. 
    X elementning III valentli bromidi(XBr₃) tarkibida elementlar massa nisbatlari mos ravishda 7:30 ni tashkil qilsa, X elementni aniqlang.
    A) Cr B) Mn C) Fe D) Ti
    

29. 
    Osh tuzining suvdagi eritmasida qanday elementlar mavjud? A) natriy, xlor B) kislorod, natriy, xlor C) xlor, vodorod, kislorod D) natriy,xlor,kislorod,vodorod
    

30. 
    Oddiy moddalar qatorini ko’rsating. 1) Cl₂ ,Cl₂O₃, HCl, KCl 2) O₃, Cl₂, P_4, S₈ 3)H₂O, O₂, Na₂O, NO 4) N₂. NH_3, N₂O, NO_2. A) 3 B) 4 C) 1 D) 2