1. Br ning valentligi keltirilgan qatorni belgilang? A I,II,V,VI,VII b I,iii,V,vii c I,iii,V,VIII D III,V,VII,II

1-variant

1.Br ning valentligi keltirilgan qatorni belgilang? A) I,II,V,VI,VII B) I,III,V,VII C) I,III,V,VIII D) III,V,VII,II

2.II,III,VI valentli elementni ko’rsating? A) Mn B) Mo C) Fe D) As

3. Fe₂O₃ tarkibida nechta bog’( chiziqlar) bor? A) 4 B) 5 C) 6 D)

4. 3 BaCl₂ tarkibida nechta molekula va atomlar bor? A) 3ta molekula,6ta atom B) 2ta molekula,5ta atom C)3ta molekula,9ta atom D) 3ta molekula,3ta atom

5.Bariy oksidi formulasini toping? A)BaO B) BaO₂ C)Ba₂O D) Ba₂O₂

6.Na₃PO₄ nisbiy molekulyar massasini toping? A) 164g/mol B) 905 C) 133 D) 100

2-variant

1.Au ning valentligi keltirilgan qatorni belgilang? A) I,II B) I,III C) I,III,V D) II,III

2.II,IV valentli elementni ko’rsating? A) Hg B) Co C) Pb D) Cd

3. P₂O₅ tarkibida nechta bog’ (chiziqlar) bor? A) 5 B) 8 C) 10 D) 12

4. 2NH₄OH tarkibida nechta molekula va atom bor? A) 2ta molekula,8ta atom B) 4ta molekula,14ta atom C) 2ta molekula,14ta atom D) 2ta molekula,12ta atom

5.Rubidiy oksidi formulasini toping? A) Rb₂O B) RbO₂ C) Rb₂O₂ D) RbO

6. Cr₂S₃ nisbiy molekulyar massasini toping? A) 100 B) 200 C)168 D) 252

3-variant

1.As ning valentligi keltirilgan qatorni belgilang? A)II,IV B)II,III C)III,V D)I,III,V,VII

2.O’zgarmas II valentli elementni ko’rsating? A)Na B)Ca C)Al D)C

3.NO₂ tarkibida nechta bog’ (chiziqlar) bor? A)3 B)5 C)4 D)6

4. 3Al₂(SO₄)₃ tarkibida nechta molekula va atom bor? A)3 ta molekula, 34 ta atom B) 3 ta molekula, 30 ta atom C) 6 ta molekula, 31 ta atom D) 6 ta molekula, 17 ta atom

5. Seziy oksidi formulasini toping? A) Cs₂O B)CsO C) SeO D) SeO₃

6. Cd(NO₃)₂ nisbiy molekulyar massasini toping. A) 235 B) 236 C) 237 D) 246

4 – variant

1.Te ning valentligi keltirilgan qatorni aniqlang. A) II, III, IV B) I, III, VI C) II, IV, VI D) I, II, IV

2. I, III, V, VII valentli elementni ko’rsating. A) In B) Sb C) Ni D) At

3. Cl₂O₇ tarkibida nechta bog’ (chiziqlar) bor? A) 14 B) 12 C) 8 D) 9

4. 3Na₂ZnO₂ tarkibida nechta molekula va atom bor? A) 3 ta molekula 5 ta atom B) 3 ta molekula 15 ta atom C) 3 ta molekula 12 ta atom D) 3 ta molekula 4 ta atom

5. Stronsiy oksidi keltirilgan qatorni toping. A) SrO B) Sr₂O C) ZrO₂ D) ZrO

6. Na₂SiO₃ ning nisbiy molekulyar massasini ko’rsating. A) 130 B) 104 C) 172 D) 122