7 sinf kimyo Kimyoviy reaksiya turlari necha turga bo'linadi?

7 sinf kimyo
1. Kimyoviy reaksiya turlari necha turga bo'linadi?
A) 2 B)3 C)4 D)5
2. Avogadro doimiysining son qiymati nechaga teng?
A)1.66×10²³ B)101.325 C)6,02×10²³ D) 8.814
3. Oddiy moddalar berilgan qatorni kursating. A) H2, O2, S B)H2O, H2S. CH4 D) H2SO4, H2, O3
4. H2O ning molekulyar massasi nechaga teng? A) 22 B)17 C)10 D)18
5. Inson tanasining suyak tarkibining necha foizini suv tashkil qiladi?A) 20-25% B)80% C)50-75% D)95-99%
6. Murakkab moddalar berilgan qatorni ko'rsating.
A) Cl2, Fe, H2O B)Na, H2O, H2S C)H2O, H2SO4, CO D) Ca, Na.Fe
7.Asosli oksidlar qatorini kursating.
A) Na2O, CaO, FeO B)CO2, SO2, P2O5 C)ZnO, Cr2O3,Al2O3 D)No, CO, N2O
8. Asoslar keltirilgan qatorni kursating.
A)H2SO4, H2O B)CaO, NaOH C)KOH, Ca(OH)2 D) CuO, CaO
9. Kislotalar qatorini tanlang.
A) NaCl, CaCl2, B) CaO, MgO, C)HCl, HF D) HBr, NaOH
10. Kislorodsiz kislotalar qstorini toping. A)HF, HBr, HCN; B)HNO3, HClO C)H2CO3, H2SO4 D) HPO4, H2SO4
11. Ikki negizli kislotani kursating.
A)HBr, HCN, HNO2 B)H2S, H2CO3, H2SO4 C) HCN, H2SO3, HNO2 D)H3PO4, HNO3, H2S
12. Perxlorat kislotani ko'rsating.
A)HClO4 B)HClO3 C)HClO2 D) HClO
13. Kislorodli kislotalar qatorini ko'rsating. A) HF, HCl, HBr B) HCN, H2S, H2NO2 C) H2SO4, HCN, HCl D)H2CO3, HPO3, H2SO4
14. Nordon tuzlar berilgan qatorni toping.
A)NaHSO4, Ca(HCO3)2 B) KNO3, NaSO4 C) CaOHCl, MgOHCl D)Ca SO4, CaCO3
15. O'rta tuzlar berilgan qatorni belgilang. A) KNO3, NaCl, CaSO4 B) NaSO4, NaHSO4, Ca(HCO3)2 C) HCl, NaCl, H2SO4 D) CaOHCl, MgOHCl

9 sinf kimyo.
1. Uglerod(4)oksidning molekulyar massasi nechiga teng?
A)24 в)44 с)36 d)32
2.,, Kaolin'' tarkibida qaysi elemenlar bor? A)AL,O,Si,H. B)K, Fe.Zn. C) S. Fe. Na D)F, Cl.Si.Al
3. Si ning quyi oksidlanish darajasi nechiga teng?
A) +2 B)+4 C)-4 D) -2
4. Si ning yuqori oksidlanish darajasi?
A)-2 B)+2 C)-4 D+4
5. Shishaga qizil rangni qaysi element beradi?
A)xrom.B) xlor. C)mis1 oksid D)temi 2 oksid
6. Yengil metallar berilgan qatorni toping.A)Fe,AL,Cr B)Li,Na,K
C)Zn,Ag,Au. D)Ng, K, Na
7. Ishqoriy metallar berilgan qatorni aniqlang. 1Na, 2Fe, 3C, 4K, 5,CA, 6Li, 7Ba, 8Cl, 9N, 10Rb, 11F, 12O.
A)1 3 6 9 B)2 4 6 8 C)1 4 6 10 D)1 4 11 12.
8. ,,Silvinit" formulasini toping.
A)KCl*NaCl B)KCl*6H2O C)NaCl*MgSO4 D)K2O Also
9. 2 gurux bosh guruxchasi elementary nima deb ataladi?
A)Ishqoriy metallar B)Galogenlar C)Inert gazlar D)Ishqoriy- yer metallari.
10. Оhaktoshning formulasini toping.
A)MgCO3 B)CaCO3 C)CaSO4 D)MgSO4.
11. Mg qaysi birikmalar tarkibida uchraydi? A)Magnizit. B)marmar C)Apatit D)Gips
12. ,,Temirtosh'' ni kursating.
A)Al2O3 B)ZnCO3 C)FeO×CrO3 D)Cr2O3×H2O
13. 2 guruh yonaki guruh elementlari berilgan javobni toping.
1Al 2Ca 3ak 4Zn 5Cd 6S 7Cl 8Ng 9Ba 10H A)1 2 3 B)2 4 6 C)4 5 8 D)8 9 10
14. Xromning suyuqlanish harrati nechiga teng?
A)1890 B)2680 C) 1700 D)7.19
15. Cr qaysi elementlar oilasiga mansub?