hoa hoc
12th Grade
•47 Qs
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hoa hoc
Quiz
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Others
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12th Grade
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Practice Problem
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Medium
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47 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
để bảo vệ vỏ tàu biển …
Ag
Na
Zn
Cu
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
ngtac điều chế KL
Khử ion
Khử ngtu
Oxi hoá KL
Oxi hoá ngtu
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
KL điều chế thuỷ luyện
Mg
Ca
Cu
K
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
KL điều chế pp đphan nóng chảy
fe
na
cu
ag
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy Kl điều chế pp đphan nóng chảy
al,na,ba
ca,ni,zn
mg,fe,cu
fe,cr,cu
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điện phân CaCl2 nóng chảy tại cực dương xảy ra
khử ion cl-
khử ca2+
oxi hoá ion ca2+
oxi hoá ion cl-
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
T cao , khí co khử oxit nào
fe2o3 và cuo
al2o3 và cuo
mgo và fe2o3
cao và mgo
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