7-sinf  7- nazorat ishi

Mavzu: Murakkab modda sinflarining tarkibi, xossalari va ishlatilishi.

1.Qaysi holatda faqat asosli oksid olish usuli ko’rsatilgan?

1. A) 4P+5O₂ = 2P₂O₅ B) C+ O₂ = CO₂
2. C) CaCO₃ = CaO + CO₂ D) Cu(OH)₂=CuO + H₂O
3. Kislotali oksidlar qatorini ko’rsating
4. A) K₂O, MgO, SO₂, Na₂O B) CO₂, P₂O₅, SO₃, NO₂
5. C) ZnO, N₂O₅, Al₂O₃, H₂O D) BaO, P₂O₅, Fe₂O₃, CO₂
6. Quyidagi oksidlarning qaysi birlari asoslar bilan reaksiyaga kirishadi?

1.CaO 2. SO₃ 3. FeO 4.N₂O₅ 5.CO₂  6.ZnO

1. A) 2,3,5 B) 2,4,5,6 C) 1,3,5                 D) 3,5,6
2. Normal sharoitda 11,2 litr oltingugurt (IV)-oksid olish uchun qancha oltingugurtni yoqish kerak? A) 16 B) 32                         C) 64                      D) 24

5.Amfoter gidroksidlar qatorini toping

1. A) KOH, Mg(OH)₂, Al(OH)₃ B) Ca(OH)₂, Fe(OH)₂, Ba(OH)₂
2. C) Zn(OH)₂, Al(OH)₃, Cr(OH)₃ D) NaOH, Zn(OH)₂, Cu(OH)₂

6.Qaysi reaksiya suvda erimaydigan asos xossasini ifodalaydi

1. A) NaOH + CO₂ → B) KOH + HCl →
2. C) CaO + H₂O→ D) Fe(OH)₃→

7.Qaysi moddadan bir vaqtning o’zida ham asosli ham kislotali oksid olish mumkin?

1. A) CaCO₃ B) Al(OH)₃ C) H₃PO₄                   D) KNO₃
2. Kislota eritmasi quyidagi indikatorlarning qaysilari ta’sirida qizaradi?
3. lakmus 2. fenolftalein 3. metilzarg’oldog’i A)1 B) 1va3      C) 2va3        D) 1va2
4. Formulalari quyidagisha bo’lgan oksidlarning qaysi birida kislorodning massa ulushi 50% ga teng ? A) SO₃ B) CO                    C) CO₂                    D) SO₂

10.Sulfat kislota quyidagi qaysi moddalar bilan reaksiyaga kirishadi?

1. MgO 2. CO₂ 3. NaOH              4. SiO₂                5. BaCl₂        6.NO₂
2. A) 1,3,4,5 B) 1,3,5               C) 2,5,6                   D) 2,3,5,6
3. Quyida keltirilgan o’zgarishlardagi no’ma’lum X moddani aniqlang

Al→AlCl₃→X →Al₂O₃

1. Al₂(SO₄)₃ B) AlBr₃                     C) Al(OH)₃                 D) Al(NO₃)₃
2. Quyidagi qaysi kislota eritmada cho’kma hosil qilish hisobiga olinadi?
3. A) H₂SO₄ B) HNO₃ C) HCl                        D) H₂SiO₃