O`zbekiston Respublikasi oliy va o`rta maxsus ta`lim Vazirligi Yangiobod qishloq va o`rmon xo`jaligi kasb –hunar kolleji

B ) 2CH₂ – C + C₂H₅- OH CH₃ – C + H₂O
OH O-C₂H₅

H
C
Cu
) CH₂ – OH CH₂ – O O – CH₂


CH – OH + Cu (OH)₂ CH – O O - CH + 2 H₂ O
H
CH₂ – OH CH₂ – -OH HO–CH₂
O
D) CH₂ – O – C – R₁ CH₂ – OH
O
CH – O – C - R₂ + 3HOH CH – OH + 3 R - cooh
O
CH₂ – O – C – R₃ CH₂ – OH
149. Quyidagi kimyoviy formulalar orasidan fenolning formulasini ko`rsating.
^{OH CH3 CH3}
A ) B) C) D) OH
150. Quyidagi ikki atomli fenollar to`g`ri nomlangan qatorni ko`rsating.
OH OH OH
1 ) OH 2) 3)
OH OH


A) Gidrohinon, pirokatexin, rezotsin
B) Xinon, gidrohinon, rezotsin
C) Pirokatexin, rezotsin, gidroxinon
D) Rezotsin, gidroxinon, xinon.
151. Ikki atomli fenollardan qaysi biri fotografiyada ochiltiruvchi modda sifatida ko`p ishlatiladi?
OH OH OH O
A ) B) C) OH D) HC CH
OH HC CH O
152. Alifatik to`yingan aldegidlarni umumiy formulasini ko`rsating.
O O
A ) C_n H_2n+1 –C B) C_n H_2n+1 –C
OH H