
Đề 1 - PHẦN I. Câu hỏi trắc nghiệm nhiều phương án lựa chọn
Authored by Hà Dương
Chemistry
12th Grade
Used 2+ times

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28 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức của ethyl acetate là
C2H5COOCH3.
C2H5COOC2H5.
CH3COOCH3.
CH3COOC2H5.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây thuộc loại polysaccharide?
maltose.
cellulose.
glucose.
fructose.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là amine bậc hai?
CH3CH(NH2)CH3.
(C2H5)2NH.
(C2H5)3N.
C2H5NH2.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tổng số nhóm amino (-NH2) và nhóm carboxyl (-COOH) trong phân tử lysine là
3.
4.
1.
2.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Biết Amino acid đầu N của tetrapeptide Val-Ala-Lys-Gly là?
Valine
Alanine
Glycine
Lysine
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong công nghiệp sản xuất đường saccharose, người ta sử dụng phương pháp nào để tách saccharose ra khỏi các tạp chất?
Chưng cất.
Sắc kí.
Kết tinh.
Chiết.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Xà phòng là muối sodium hoặc potassium của
acetic acid.
phenol.
acid vô cơ.
acid béo.
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