20. 0,5 mol atomar kislorod massasini aniqlang?
A) 6,02 * 1023 B) 6,01 * 1022
C) 3,01 * 1023 D) 16 * 10 22
7 – sinflar uchun “Kimyo” fanidan
T E S T S A V O L L A R I I – chorak
III – variant
1. Moddaning agregat holatlarini ko`rsating?
A) gaz holati B) suyuq holati
C) qattiq holati D) hamma javob to`g`ri
2. Quyidagi reaksiyada chap va o`ng tomondagi koeffisiyentlar sonini aniqlang. Ca + HCl = CaCl2 + H2;
A) 3 = 2 B) 2 = 2 C) 4 = 2 D) 2 = 3
3. Alyuminiy oksidini formulasini ko`rsating?
A) AlO B) Al2O3 C) Al2O2 D) AlO2
4. Avagadro sonini ko`rsating?
A) 6,02 * 1023 B) 6,02 * 1022
C) 3,01 * 1023 D) 3,01 * 10 22
5. 0,5 mol atomar kislorod massasini aniqlang?
A) 6,02 * 1023 B) 6,01 * 1022
C) 3,01 * 1023 D) 16 * 10 22
6. Quyida faqat kimyoviy jihozlarni ko`rsating?
A) osh tuzi, probirka, shtativ
B) probirka, suv, osh tuzi
C) shtativ, probirka, spirt lampasi
D) osh tuzi, simob, suv
7. Atom nimadan tashkil topgan?
A) molekulalardan
B) elektron, protondan
C) elektron, neytrondan
D) elektron, neytron, protondan
8. Quyida faqat murakkab modda berilgan qatorni ko`rsating?
A) O2, Cl2 H
B) HCl, H2 SO4 ,CaO
C) H2O, H2, O2,
D) Ca O, MgO
9. Kimyo fani nimani o`rgatadi?
A) kimyoviy qonuniyatlarni
B) fizikaviy qonuniyatlarni
C) moddalarni tuzilishini
D) hamma javoblar to`g`ri
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