hoa 12 giua ki 1
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1. Chất nào sau đây là ester?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2. Chất X có công thức cấu tạo CH2=CH – COOCH3. Tên gọi của X là
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3. Ester nào sau đây tác dụng với NaOH thu được ancol methylic?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4. Thủy phân ester X trong môi trường kiềm, thu được sodium acetate và ancol ethylic. Công thức của X là
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5. Chất béo là triester của acid béo với
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6. Trong các hợp chất sau, hợp chất nào là chất béo?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7. Có bao nhiêu ester có công thức phân tử C3H6O2?
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