
BAI25TRACNGHIEM
Authored by Diễm Hương BT
Chemistry
12th Grade
Used 3+ times

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44 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ở trạng thái cơ bản, nguyên tử kim loại kiềm thổ có số electron hoá trị là
1
2
3
4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong hợp chất, các kim loại kiềm thổ có số oxi hóa là
+1
+2
+4
+3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây không tan trong nước?
CaCl2
Ba(NO3)2
CaCO3
MgSO4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây tác dụng với dung dịch H2SO4 loãng tạo khí H2?
Ca(OH)2
Mg(OH)2
Mg
BaO
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phản ứng của kim loại Ca với khí Cl2, một nguyên tử Ca nhường bao nhiêu electron?
1
2
3
4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại nào sau đây không tác dụng được với nước ở nhiệt độ thường?
Ca
Mg
Be
Ba
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để khử chua, khử trùng đáy ao trước khi nuôi thủy sản, người ta có thể dùng hóa chất nào sau đây?
MgO
Mg(OH)2
CaO
MgSO4
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