23.đề 5
Authored by sáng phạm
Chemistry
11th Grade
Used 2+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Metyl axetat có công thức cấu tạo là
A. C2H5COOCH3. B. HO-C2H4-CHO.
C. HCOOC2H5. D. CH3COOCH3.
A
B
C
D
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là monosaccarit?
A. Saccarozơ. B. Tinh bột.
C. Xenlulozơ. D. fructozơ.
A
B
C
D
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là chất điện li yếu?
A. NaOH. B. KCl. C. HF D. HNO3.
A
B
C
D
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây thuộc loại amin bậc ba?
A. (CH3)3N. B. CH3NHCH3.
C. CH3NH2. D. CH3CH2NHCH3.
A
B
C
D
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Polime nào sau đây được điều chế bằng phản ứng trùng ngưng?
A. Polietilen. B. Poliacrilonitrin. C. Poli(vinyl clorua). D. nilon-6,6.
A
B
C
D
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ở điều kiện thường, kim loại nào sau đây ở trạng thái lỏng?
A. Cu. B. Hg. C. Mg. D. Na.
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho Fe tác dụng với dung dịch H2SO4 loãng, thu được muối trong đó sắt có số oxi hóa là
A. +1. B. +2. C. +3. D. +4.
A
B
C
D
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