
đề 6 - hóa 12- 2024
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
diu diu
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27 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quặng manhetit được dùng để sản xuất kim loại nào sau đây?
Fe
Al
Cu
Ag
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Axit fomic có trong nọc một số loài kiến. Khi bị loại kiến này cắn, nên chọn chất nào sau đây bôi vào vết thương để giảm sưng tấy?
Giấm ăn.
Muối ăn.
Vôi tôi.
Nước.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại Al tan hết trong lượng dư dd nào sau đây sinh ra khí H2?
NaCl.
NaNO3.
HCl.
Na2SO4.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức của nhôm oxit là
Al2O3.
Al(OH)3.
AlCl3.
Ba(AlO2)2.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Anilin (C6H5NH2) không phản ứng với chất nào?
HCl (dd).
Br2 (dd).
HNO3 (dd).
NaOH (dd).
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức chung của este no, đơn chức, mạch hở là
CnH2n-4O2.
CnH2n+2O2.
CnH2n-2O2.
CnH2nO2.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Amino axit H2N[CH2]4CH(NH2)COOH có tên gọi là
alanin.
lysin.
valin.
glyxin.
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