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


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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
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