
nhóm VIIIB

Quiz
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Science
•
University
•
Medium
Duc Nghia ..
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43 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
oxid nào có màu đen
FeO
Fe2O3
Fe3O4
FeO3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
oxid nào có màu đỏ nâu
FeO
Fe2O3
Fe3O4
FeO3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
oxid nào k bền
FeO
Fe2O3
Fe3O4
FeO3
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
tính chất của Fe2O3
tan trong acid tạo muối fe3+
tan trong acid tạo muối hỗn hợp muối
nung ở nhiệt độ cao k tan trog acid
nung ở nhiệt độ cao tan mạnh trog acid
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
các oxyd của Co
Co2O3
Co3O4
CoO
CoO3
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
oxyd của Ni
NiO
Ni2O3
Ni3O4
NiO3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
các hydroxid cuả Fe, Co, Ni có tan k
ít tan
dễ tan
tan mạnh
k tan
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