
ÔN TẬP HK2
Authored by Nam Anh
Chemistry
12th Grade

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90 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Trong các chất: Fe3O4, Fe(NO3)2, Fe2O3, FeSO4, Fe2(SO4)3. Số chất có cả tính oxi hoá và tính khử là
1
2
3
4
5
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cho các chất: NaOH, Cu, Fe, AgNO3, K2SO4. Số chất phản ứng được với dung dịch FeCl3 là
1
2
3
4
5
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Trong hợp chất CrO3, crom có số oxi hóa là
+2
+3
+6
+1
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Công thức hóa học của kali đicromat là
K2CrO4
KCrO2
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Trong hợp chất Cr2O3, crom có số oxi hóa là
+3
+2
+1
+6
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Các số oxi hoá đặc trưng của crom là
+2, +3, +6
+2, +4, +6
+3, +4, +6
+2, +5, +6
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Số oxi hóa của crom trong hợp chất NaCrO2 là
+1
+2
+3
+6
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