dự đoán 3
Authored by Thủy Nguyễn
Chemistry
University
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32 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Metylamoni clorua có công thức là
A. C6H5NH3Cl. B. C2H5NH3Cl.
C. CH3NH3Cl. D. NH4Cl.
A
B
C
D
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại phản ứng với dung dịch HCl và dung dịch NaOH tạo thành muối là
A. Na. B. Fe. C. Cu. D. Al.
A
B
C
D
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức hóa học của natri đicromat là
A. Na2SO4. B. Na2CrO4. C. Na2Cr2O7. D. NaCrO2
A
B
C
D
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất có thể gây nghiện cho con người nếu sử dụng thường xuyên là
A. cocain. B. ampixilin.
C. paradol. D. penixilin.
A
B
C
D
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây được dùng để khử chua đất trong nông nghiệp?
A. CaO. B. CaCl2.
C. Ca(NO3)2. D. CaSO4.
A
B
C
D
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây vừa phản ứng với dung dịch H2SO4, vừa phản ứng với dung dịch KOH?
A. KHCO3. B. KOH.
C. NaCl. D. K2CO3.
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức cấu tạo thu gọn của phenol là
A. C3H5OH. B. C4H5OH.
C. C6H5OH. D. C2H5OH.
A
B
C
D
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