I – kimyodan asosiy tushunchalar

Kimyo – 2004 yil (Variant).
1. (104-1). O’zgarishlar orasidan kimyoviy jarayonga taalluqli bo’lganlarini toping.

1) kislorodning ozonga aylanishi.

2) kislorodni suyultirilgan havodan olish.

3) simob(II)oksiddan kislorod olish.

4) suvni qaynatish.

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

2. (110-8). Quyidagilarning qaysilari kimyoviy hodisa hisoblanmaydi?

1) mis idishning havoda qorayishi

2) suvning muzlashi

3) kislotaga asos ta’sir etishi

4) qumni sement bilan aralashtirish

5) havoni sovutib kislorod olish

6) metallning havoda oksidlanishi

A) 2,4,5 B) 2,3,6 C) 1,2,3 D) 1,3,6

3. (105-1). Faqat metall elementlaridan tashkil topgan qatorni aniqlang.

A) azot, oltingugurt, bor, ftor

B) rubidiy, stronsiy, kobalt, titan

C) azot, berilliy, kalsiy, kremniy

D) uglerod, alyuminiy, xlor, rux

4. (106-1). Murakkab moddalar qatorini ko’rsating.

1) ammiak, metan, gematit

2) suv, fosfin, sovun

3) ozon, xlor, qaldiroq gaz, vodorod peroksid

4) bronza, oq fosfor, marganes

5) malaxit, ohaktosh, kaliy, magniy

A) 2,4 B) 3,4 C) 1,2 D) 2,5

5. (108-1). 2 ta murakkab va 2 ta oddiy moddalar qatorini ko’rsating.

A) is gazi, ozon, kislorod, fosfin

B) selitra, etan, benzol, aseton

C) metan, oltingugurt, kislorod, xlor

D) fosfor, oltin, kumush, pirit

6. (113-1). Murrakkab moddalarni tanlang.

1) muz 2) temir 3) bo’r 4) azot

5) ozon 6) fosfin 7) karbin 8) olmos

9) “quruq muz” 10) bertole tuzi

A) 2,4,5,8,10 B) 2,4,5,7,8

C) 1,3,5,7,9 D) 1,3,6,9,10

7. (107-1). Allotropik shakl o’zgarishi namoyon qilmaydigan elementlar qatorini ko’rsating.

A) oltingugurt, ftor, yod, rux

B) mishyak, kislorod, bariy, bor

C) xlor, azot, brom, simob

D) fosfor, qalay, selen, tellur

8. (112-1). Tarkibida allotropik shakl o’zgarishli elementlar bo’lmagan moddalarni toping.

1) HCl 2) CO₂ 3) AsH₃ 4) NaF

5) PH₃ 6) AlCl₃ 7) K₂Se 8) KBr

A) 3, 5, 6, 7, 8 B) 2, 4, 5, 7

C) 1, 3, 5, 7, 8 D) 1, 3, 4, 6, 8

9. (102-1). Tarkibida allatropik shakl o’zgarishiga ega bo’lgan elementlari yo’q bo’lgan birikmalarni aniqlang.

A) FeCl₂, HCl, K₂S

B) KCl, NaCl, K₂CO₃

C) NaCl, KF, HCl

D) FeS, H₂O, Zn₂P₃