Polikondensatsiya reaksiyasi natijasida hosil bo’lmaydigan polimerlarni aniqlang fenolformaldegid smolasi; polistirol; polimetilmetakrilat; polivinibdorid; bo’tadien kauchugi; sellyuloza. Xatolik topdim

B)-CH(COOH)CH₂-
C)-CH(COOCH₃)CH₂-
D)-C(CH₃)(COOH)CH₂-
23.Butadiyen-1,3 ning o’rtacha polimerlanish darajasi 300 bo’lsa, 405 g monomerdan necha mol butadiyen kauchuk olinadi ?
A)0,020
B)0,040
C)0,025
D)0,030
24 56 g polietilen (-CH₂-CH₂-) 20000 necha mol ?
A) 102
B) 103
C) 104
D) 105
25. Molekulyar massasi 5000 (g/ mol ) ga teng bo’lgan politetraftoretilen (monomer CF₂=CF₂) ning polimerlanish darajasini aniqlang ?
B)50
C)100
D)500