
OT 12 đề 2
Authored by Thanh Nguyễn
Architecture
12th Grade
Used 3+ times

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35 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dung dịch nào sau đây làm phenolphtalein đổi màu?
A. Metylamin. B. Alanin.
C. Axit axetic. D. Glyxin.
A
B
C
D
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dung dịch nào sau đây có pH < 7?
A. K2SO4. B. KOH.
C. HCl. D. NaCl.
A
B
C
D
Answer explanation
AXIT CÓ PH< 7
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ở điều kiện thường, chất nào sau đây tồn tại ở thể rắn, có cấu tạo ion lưỡng cực?
A. Triolein. B. Alanin. C. Metylamin. D. Glixerol.
A
B
C
D
Answer explanation
AMINOAXIT TỒN TAỊ DẠNG IN LƯỠNG CỰC
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Chất nào sau đây có khả năng làm mềm nước cứng vĩnh cửu?
A. Na3PO4. B. NaOH. C. Ca(OH)2. D. HCl.
A
B
C
DS
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dung dịch axit H2SO4 đặc, nguội phản ứng được với kim loại nào sau đây?
A. Al. B. Fe. C. Cr. D. Ag.
A
B
C
D
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Phân tử etylamin có bao nhiêu nguyên tử hiđro?
A. 5. B. 7. C. 11. D. 9.
A
B
C
D
Answer explanation
C2H5NH2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
: Loại dầu, mỡ nào dưới đây không chứa chất béo?
A. Mỡ động vật.
B. Dầu mazut.
C. Dầu thực vật.
D. Dầu cá.
A
B
C
D
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