
kiểm tra hóa 29-42
Authored by Lưu Thúy
University
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất X vừa tác dụng vs axit, vừa tác dụng với bazo. Chất X là
CH3COOH
H2NCH2COOH
CH3CHO
CH3NH2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây vừa tác dụng với H2NCH2COOH, vừa tác dụng với CH3NH2
Nacl
Hcl
Ch3oh
Naoh
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thủy phân m gam pentapeptit A tạo bởi phân tử amino axit ( glyxin) thu đc 0,3 gam glyxin ; 0,792 gam đipeptit gly-gly; 1,701 gam tripeptit gly -gly-gly; 0,738 gam tetrapeptit gly-gly-gly-gly 0,303gam .giá trị của m là
4,545gam
3,636gam
3,834gam
3,672gam
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các chất dưới đây chất nào là đipeptit
H2N-CH2-CO-NH-CH2-CH2-COOH
H2N-CH2-CO-NH-CH(CH3)-COOH
H2N-CH2-CO-NH(CH3)-CO-NH-CH2-COOH
H2N-CH(CH3)-CO-NH-CH2-CO-NH-CH(CH3)-COOH
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sự kết tủa protit bằng nhiệt được gọi là
Sự ngưng tụ
Sự đông tụ
Sự trùng ngưng
Sự phân hủy
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tri peptit là hợp chất
Mà phân tử mỗi có 3 liên kết peptit
Có liên kết peptit mà phân tử có 3 gốc amino axit giống nhau
Có liên kế peptit mà phân tử có 3 gốc amino axit khác nhau
Cis 2 liên kết peptit mà phân tử có ba gốc a-amino axit
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thuốc thử được dùng để phân biệt gly-ala-gly với gly-ala là
Dung dịch naoh
Dung dịch nacl
Cu(oh)2 trg môi trường kiềm. ( phản ứng màu bỉuer
Dung dịch hcl
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