Kimyo. (1 Qism)

A) CO B) C₃H₄

C) C₂H₄ D) SO₃

417. 
     Quyidagi jarayonda hosil bo’lgan vodorodning o’rtacha molyar massasini ( ) toping.
     

SiH₄ + D₂O SiO₂ + …

A) 2 B) 3 C) 3,5 D) 4

417. 
     Quyidagi jarayonda hosil bo’lgan vodorodning o’rtacha molyar massasini ( ) toping.
     

AlH₃ + D₂SO₄ Al₂(SO₄)₃ + …

A) 2 B) 3 C) 3,5 D) 4

417. 
     Suv molekulasida H₂O, D₂O,va T₂O tegishli tartibda 3:2:1 mol nisbatda. Suvning parchalanishidan hosil bo’lgan vodorodning o’rtacha molyar massasini ( ) toping.
     

A) 3,33 B) 4,44 C) 5,55 D) 2,33

417. 
     Qaysi metalning aktivligi eng yuqori?
     

A) Ca B) Mg C) Zn D) Li

417. 
     Qaysi javobda oddiy modda keltirilgan?
     

A) HCl B) (– C C –)

C) HJ D) KJ

417. 
     Natriy azid tarkibidagi natriyning atom ulushini (%) aniqlang.
     

A) 25 B) 75 C) 40 D) 20

434. 
     K₂S₂O₃ tarkibli moddada qanday bog’lar mavjud?
     

1) qutbli kovalent bog’; 2) qutbsiz kovalent bog’;
3) metall bog’; 4) ion bog’

A) 1,2,3 B) 1,2,4 C) 1,4 D) 1,2

434. 
     CH₃COONa tarkibli moddada qanday bog’lar mavjud?
     

1) qutbli kovalent bog’; 2) qutbsiz kovalent bog’;
3) metall bog’; 4) ion bog’

A) 1,2,3 B) 1,2,4 C) 1,4 D) 1,2

434. 
     Benzol molekulasida qaysi bog’ miqdori ko’p bo’ladi?
     

1) qutbli kovalent bog’; 2) qutbsiz kovalent bog’;
3) donor - akseptor; 4) ion bog’