Ix-sinflar uchun Kimyo fanidan test savollari


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VIII-sinflar uchun Kimyo fanidan test savollari



  1. 4 mol Ca metali necha gr keladi?

A) 40 B) 80 C) 160 D) 300

  1. ushbu yadro reaksiyasi asosida 10,16 mg nobiley yemirilishidan hosil bo’lgan elektronlar sonini hisoblang.

A) 96,32∙1018 B) 17,94∙1023 C) 23,02∙1019 D) 36,12∙1023

  1. Tarkibida 20%qo’shimcha moddalar bo’lgan 46 gr dolomite parchalaganda necha litr gaz ajraladi?

A) 33,6 B) 11,2 C) 8,96 D) 44,8

  1. 88 gr uglerod(IV) oksid olish uchun necha mol ko’mirni yondirish kerak?

A) 2 B) 1 C) 4 D) 3

  1. 284 gr natriy sulfatdagi natriy atomlarning sonini toping.

A) 6,02∙1023 B) 12,04∙1023 C) 24,08∙1023 D) 28,08∙1023

  1. Ozonning necha gramida 2,71∙1024 dona kislorod atomlari bo’ladi?

A) 72 B) 48 C) 64 D) 50

  1. 250 ml gaz 715 gr keladi. Shu gazning molekulyar massasini toping.

A) 60 B) 64 C) 66 D) 33

  1. 1,75 mol Cl2O5 va 0,75 mol Mn2O7 dagi atomlar sonining nisbatini toping.

A) 1,8:2 B) 1,8:1 C) 2:1 D) 3:1

  1. 3,6 gr metal oksidning vodorod bilan qaytarilishi natijasida 0,81 gr suv hosil bo’ladi. Metalning ekuivalent massasini toping.

A) 32,5 B) 32 C) 24,5 D) 15,00

  1. 0,2 mol XO2 birikmasi 9,2 gr kelsa, 1 mol X2O5 birikmasi necha gr keladi?

A) 46 B) 92 C) 108 D) 216

  1. Xlorning ekvivalent massasi 11,8 g/mol bo’lsa birikmani toping.

A) HCl B) HClO C) HClO2 D) HClO3

  1. Magniy digidrofosfat formulasini aniqlang.

A) Mg(H2PO4)2 B) Mg3(PO4)2 C) Mg(HPO4)2 D) MgHPO4

  1. Tarkibida 10 % qo’shimchgalari bo’lgan 50 gr ohaktoshdan qancha massa karbonat angrid olinadi?

A) 44 B) 36,3 C) 19,8 D) 17,3

  1. 30 gr osh tuzi 500 gr suvda eritilganda hosil bo’lgan eritmaning C % ni toping.

A) 4,8% B) 5,6% C) 11,2% D) 3,6%

  1. 500 gr 20% osh tuzi eritmasini tayyorlash uchun qancha tuz va suv kerak?

A) 100;400 B) 150;350 C) 200;300 D) 250;250

  1. 11,1 gr malaxitning parchalanishidan 1,12 l (n.sh.) karbonat angrid ajralib chiqsa, reaksiya unumini toping.

A) 78 B) 80 C) 100 D) 50

  1. XXlor atomi nechta electron juftga ega?

A) 5 B) 6 C) 8 D) 9

  1. …4p64d10/5s0 ushbu electron konfiguratsiya qaysi elementga tegishli?

A) Nb B) Pd C) Ag D) Mn



  1. Reaksiyaga qadar olingan moddalarning massasi reaksiyadan so’ng olingan moddalarning massasiga teng. Bu qaysi qonun?

  2. Allotropik shakl o’zgarishlarga misol keltiring.

  3. Havodan yengil gazlarga misol keltiring.

  4. Radioaktiv elementning o’z-o’zidan radiaktiv nurlar chiqishi natijasida yangi kimyoviy element hosil bo’lishiga nima deb aytiladi?

  5. Metallmaslik xossa davriy sistemada davrlarda qanday o’zgaradi?

  6. Tuz tarkibi nimadan tashkil topgan?

  7. Alyumeniy digroksosulfat formulasini yozing.




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