
de on so 3 hk2 khoi 12
Quiz
•
Chemistry
•
9th - 12th Grade
•
Easy
Quốc Trần
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40 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
4s1
3s1
2s1
3d1
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
0
+1
+2
+3
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Fe2O3
FeCO3
FeS2
Fe3O4
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Cr(OH)2
Cr2O3
Al(OH)3
Al2O3
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Người ta nhận biết ion Al3+ bằng
dd NaOH
quỳ tím
nước
H2SO4
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