
Kiếm tiền (9)
Authored by Thành Đạt Nguyễn
Chemistry
12th Grade
Used 3+ times

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32 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại nào sau đây không tan trong dung dịch HCl?
Ag.
Fe.
K.
Al.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tên gọi của Fe2O3 là
oxit sắt từ.
sắt(II) oxit.
sắt (III) oxit.
sắt(III) hidroxit.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho Fe tác dụng với lượng dư dung dịch chất X (loãng), thu được muối sắt(III). Chất X là
CuSO4.
NaNO3.
H2SO4.
AgNO3.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là chất điện ly yếu?
HCOOH.
NaNO3.
MgCl2.
Ba(OH)2.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số oxi hóa phổ biến của sắt trong hợp chất là
-2 và -3.
0, +2 và +3.
+2 và +3.
0, -2 và-3.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Polietilen được trùng hợp từ monome nào sau đây
CH2=CHCl.
CH2=CH2.
CH3CH=CH2.
C6H5CH=CH2.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong hợp chất, kim loại kiềm có số oxi hóa là
+3.
+1.
0
+2.
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