
bài 17
Authored by Hằng Thị
Chemistry
9th - 12th Grade
Used 3+ times

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Khí nào sau đây được dùng để khử trùng cho nước sinh hoạt?
A. CO2
B. O2
C. Cl2
D. N2.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Chlorine không phản ứng được với dung dịch nào sau đây?
A. NaOH
B. NaCl.
C. Ca(OH)2
D. NaBr.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Sục Cl2 vào NaOH, thu được nước javel màu vàng nhạt. Trong nước javel có chứa các muối tan là:
A. Cl2, H2O
B. NaCl, HClO
C. NaCl, NaClO.
D. Cl2, NaCl, NaClO, H2O.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: Trong hợp chất, fluorine có số oxi hóa là:
A. 0
B. +1.
C. -1
D. +3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Chất nào sau đây chỉ có tính oxi hoá, không có tính khử?
A. F2
B. Cl2
C. Br2
D. I2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6: Hỗn hợp khí nào sau đây không tồn tại ở nhiệt độ thường?
A. H2 và F2.
B. Cl2 và O2.
C. H2S và N2.
D. CO và O2.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Phản ứng giữa hydrogen và chất nào sau đây là phản ứng thuận nghịch?
A. Fluorine.
B. Chlorine.
C. Iodine.
D. Bromine.
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