Ôn tập giữa HKII Hóa học
Quiz
•
English
•
8th Grade
•
Practice Problem
•
Easy
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43 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 1. Oxi hóa lỏng ở nhiệt độ bao nhiêu?
A. 183°C
B. -183°C
C. 196°C
D. -196°C
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 2. Tính chất vật lí nào sau đây không phải của oxi?
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 3. Cacbon cháy trong oxi dư tạo ra chất nào sau đây?
A. CO2
B. H2CO3
C. SO2
D. CaCO3
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 4. Magie tác dụng với oxi tạo ra chất nào sau đây?
A. MgCO3
B. MgCl2
C. MgO
D. Mg(OH)2
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 5. Sự tác dụng của oxi với một chất gọi là
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 6. Phản ứng nào là phản ứng phân hủy?
A. Cu + H2SO4 → CuSO4 + H2.
B. CaO + H2O → Ca(OH)2
C. CaCO3 → CaO +CO2.
D. Fe+ 2HCl→FeCl2 + H2.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 7. Phản ứng nào dưới đây là phản ứng hoá hợp
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