
Đề 10
Authored by Nguyễn Thị Ngọc Hoà
Chemistry
10th Grade

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28 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của H trong hợp chất H2O là
+1
+2
+4
-4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa của N trong hợp chất HNO3 là
+3
+5
+4
+6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phản ứng nào sau đây HCl đóng vai trò là chất khử?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
nhận 1 electron
cho 1 electron
nhận 2 electron
cho 2 electron
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(a), (b) và (d)
(c) và (e)
(a), (b) và (c)
(a), (c) và (e)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho sơ đồ biểu diễn biến thiên enthalpy của phản ứng sau
Phương trình nhiệt hóa học ứng với phản ứng trên là
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
toả ra nhiệt lượng 286 kJ.
thu vào nhiệt lượng 286 kJ
toả ra nhiệt lượng 572 kJ
thu vào nhiệt lượng 572 kJ
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