
điều chế KL - sự điện phân

Quiz
•
Chemistry
•
12th Grade
•
Hard
vee vee
FREE Resource
37 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
điện phân dd nào sau đây để đc KL tương ứng
nacl
cacl2
agno3
alcl3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
PƯ nào dùng pp thủy luyện
feso4 + zn
ZnO +H2
cuso4 + h2o
nung agno3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
các KL nào trong dãy sau đây đc điều chế bằng pp thủy luyện
cu,ag
al,ag
na, mg
cu,al
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
hai KL đều có thể điều chế bằng pp nhiệt luyện là
na, cu
fe, cu
mg, zn
ca, fe
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ở nhiệt độ cao, CO có thể khử đc
MgO
K2O
fe2o3
CaO
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
oxit KL ko bị khử bởi khí CO ở nhiệt độ cao là
MgO
Fe2O3
NO
CuO
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
KL nào chỉ điều chế đc bằng pp điện phân nóng chảy
zn
fe
ag
na
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