D. Polime diing de san xuat to phai cd mach cacbon khong nhanh, xep song song, khong dgc, cd kha nang nhugm mau, mem dai.
A. Thulc thir Fehlinh (phirc Cu^* vdi ion tactarat) B Thuoc thir tolen (phiic Ag"^ voi NH3)
C. Cu(0H)2
D. Dung dich voi sira
Ddp dn A
2.26. Chgn phat bilu diing vl cacbohidrat
A. Cacbohidrat la mot loai hidrocacbon
B. Cacbohidrat la hgp chit tap chiic cd chiia nhilu nhdm - O H va cd nhom > C 0 trong phan tir
C. Cacbohidrat la hgp chat da chiic cd chiia nhieu nhdm -OH va cd nhom >CO trong phan tir
D. Cacbohidrat la hgp chat cd cong thirc chung la Cn(H20)n
Ddp dn B
2.27. Cho cac dung dich khong mau: HCOOH, CH3COOH, glucozo(C6Hi206),
glixerol, C2H5OH, CH3CHO. Dimg nhung cap chat nao cd the nhan biet dugc ca 6 chat?
A. Cu(0H)2, quy tim, AgN03 trong dung dich NH3 B. Quy tim, NaOH va AgN03 trong dung dich NH3 C. Cu(0H)2, AgN03 trong dung dich NH3 va NaOH D. Quy tim, AgNOs trong dung dich NH3 va H2SO4
Ddp dn A
2.28. Cho m gam bdn hgp glucozo, mantozo tac dyng hoan toan vdi dung dich
AgN03/NH3 thu dugc 32,4 gam Ag. Cho m gam b i n hgp Glucoza, mantoza vao dung dich H2SO4 loang din khi thuy phan hoan toan. Trung boa het axit sau dd cho san pham tac dung hoan toan vdi dung dich AgN03/NH3 thu dugc 45,36 gam Ag. Khoi lugng Glucozo trong m gam hon hgp la
A. 10,8 gam B. 14,58 gam C. 16,2gam D. 20,52gam
Ddp dn C
2.29. Khoi lugng glucozo dung dl dilu chi 5 lit ancol etylic vcri hieu suat 80%
(khoi lugng rieng cua ancol etylic la 0,8 g/ml) la
A. 2,504kg B. 3,130 kg C. 2,003 kg D. 3,507 kg
Ddp dn B
2.30. Xenlulozo diaxetat (X) dugc diing de san xuat phim anh hoac to axetat.
Cong thiic don gian nhit (cong thiic thuc nghiem) cua X la
A. C3H4O2 B. C O H H O ? C . C | 2 H , 4 0 7 D . C , 2 H , 4 0 5
ChiroTig III
AMIN-AMINO AXIT-PROTEIN
3.1. Cong thiic nao dudi day la cong thiic chung cua day ding ding amin thom (chiia mot vong benzen), don chiic, bac nhit?
A. CnHzn - 7NH2 (n > 6 ) B . CnH2n + 1NH2 ( u > 6)
C. C6H5NHCnH2n + 1 (u > 1) D . CnHzn - 3NHCnH2n - 4 ( n > 3)
Ddp dn A
3.2. Phan tich dinh lugng hgp chat hiru co X ta thiy ti le khoi lugng giiia 4 nguyen to C, H, O, N la mc : mH : mo : mw = 4,8 : 1 : 6,4 : 2,8. Ti khoi hoi ciia X so vdi He bang 18,75. Cong thiic phan tu cua X la