
ôn tập (chuyển môn)
Authored by Đăng Lê Gia Khánh
Chemistry
10th Grade
Used 1+ times

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69 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của nguyên tố trong đơn chất bằng:
+1
0
-1
+2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của kali trong ion K+ là:
0
+1
-1
+2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của lưu huỳnh trong H2SO4 là
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của P trong H3PO4 là
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của Cl trong HCl là
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho quá trình : Fe+2 → Fe+3 + 1e
Đây là quá trình :
oxi hóa.
khử .
nhận proton.
giảm số oxi hóa
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Chất khử trong phản ứng:
Mg + 2HCl → MgCl2 + H2
là
Mg.
HCl.
MgCl2.
H2.
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