
Kiếm tiền (12)
Authored by Thành Đạt Nguyễn
Chemistry
12th Grade
Used 4+ times

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32 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây tồn tại dạng kết tủa keo trắng trong nước?
Fe(OH)3.
Cu(OH)2.
Al(OH)3.
KOH.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số nguyên tử cacbon có trong một phân tử peptit Gly-Ala-Gly là
6
7
8
9
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch chất nào sau đây làm quỳ tím chuyển thành màu xanh?
CH3COOCH3.
C2H5OH.
CH3NH2.
HCOOH.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là oxit axit?
HNO3.
SO2.
CaO.
KOH.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây thuộc loại polisaccarit?
Xenlulozơ.
Glucozơ.
Saccarozơ.
Fructozơ.
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Kim loại nào sau đây tác dụng được với axit HCl?
Cu.
Al.
Mg.
Na.
Ag
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Oxit nào sau đây tác dụng hoàn toàn với dung dịch NaOH loãng, dư?
CuO.
Al2O3.
Fe2O3.
MgO.
Cr2O3.
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