
ÔN GK 10
Authored by Vân Hải
Chemistry
1st Grade
Used 6+ times

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54 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất oxi hoá là chất
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất khử là chất
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho quá trình : Fe2+ → Fe3++ 1e. Đây là quá trình :
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phản ứng oxi hóa – khử, chất bị oxi hóa là
chất nhận electron
chất nhường electron.
chất làm giảm số oxi hóa
chất không thay đổi số oxi hó
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phản ứng oxi hóa – khử, chất oxi hóa là
chất nhận electron
chất nhường electron.
chất làm tăng số oxi hóa
chất không thay đổi số oxi hó
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho quá trình : N+5 + 3e → N+2. Đây là quá trình :
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của nitơ trong ion NO3- là
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