6 Sinflar uchun test savollari

6. Birikmalarda kislorod necha valentli bo`ladi?
A) I B) II C) III D) IV
7. 18 gr uglerodni to`liq yondirish uchun necha litr kislorod kerak?
A) 33,6 B) 22,4 C) 11,2 D) 5,6
8. Laboratoriya sharoitida vodorod qanday olinadi?
A) rux elementiga HCl ta’sir ettirib
B) temirga H₂ SO₄ ta’sir ettirilib
C) misga HCl ta’sir ettirib
D) A va B javoblar to`g`ri
9. Suv tarkibida vodorodni % ulushi necha teng?
A) 11,18 B) 22,22 C) 8,96 D) 12,12
10. Quyida faqat oddiy moddalar keltirilgan qatorni ko`rsating?
A) H₂, O₂, N₂,
B) H₂O; HCl, HJ;
C) NaCl, HCl, MgO
D) CaO, Na₂O, Al₂O₃
11. Vodorodni valentligi nechaga teng?
A) I B) II C) III D) IV
12. Quyidagi o`zgarishlardan qaysilari fizikaviy hodisalarni ko`rsating? 1 – shamni yonishi, 2 – suvni muzlashi, 3 – yog`ochni sinishi, 4 – qog`ozni yonishi
A) 1,2
B) 2,3
C) 1,4
D) 3,4
13. Davriy sistemada kim elementlar soni nechtaga yetgan?
A) 110 ta
B) 118 ta
C) 129 ta
D) 130 ta
14. Quyidagi reaksiya turini aniqlang? 2H₂ + O₂ = 2H₂O
A) birikish reaksiyasi
B) o`rin olish reaksiyasi
C) parchalanish reaksiyasi
D) almashinish reaksiyasi
15. Kislorod elementini birinchi bo`lib kim aniqlagan?
D. I.Mendeleyev
B) Lavuaziye
C) J.Pristle
D) J.Dal’ton

7 – sinflar uchun “Kimyo” fanidan


T E S T S A V O L L A R I 2009 – 2010 o`quv yili II – chorak


II – variant
1. Ozon elementi formulasini ko`rsating?
A) O_2­ B) O C) O₃ D) O₄
2. Katalizator - …
A) reaksiya teligini oshiradi
B) reaksiya tezligini kamaytiradi
C) reaksiyada ishtirok etib, yangi modda bo`ladi
D) A va B javoblar to`g`ri