
ÔN TẬP HÓA 9+
Authored by Nhung Hong
Chemistry
7th Grade
Used 11+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy oxit tác dụng với nước tạo ra dung dịch kiềm:
CuO, CaO, K2O, Na2O.
CaO, Na2O, K2O, BaO.
Na2O, BaO, CuO, MnO.
MgO, Fe2O3, ZnO, PbO.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy oxit tác dụng với dung dịch axit clohiđric (HCl):
CuO, Fe2O3, CO2, FeO.
Fe2O3, CuO, MgO, Al2O3.
CaO, CO, N2O5, ZnO.
SO2, MgO, CO2, Ag2O.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy chất gồm các oxit axit là:
CO2, SO2, NO, P2O5.
CO2, SO3, Na2O, NO2.
SO2, P2O5, CO2, SO3.
H2O, CO, NO, Al2O3.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
0,5mol CuO tác dụng vừa đủ với:
0,5mol H2SO4.
0,25mol HCl
0,5mol HCl.
0,1mol H2SO4.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất tác dụng với nước tạo ra dung dịch axit là
K2O.
CuO.
P2O5.
CaO.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Có thể loại bỏ tạp chất CO2 ra khỏi hỗn hợp (CO + CO2) bằng cách:
Dẫn hỗn hợp qua dung dịch Ca(OH)2 dư.
Dẫn hỗn hợp qua dung dịch PbCl2 dư
Dẫn hỗn hợp qua NH3.
Dẫn hỗn hợp qua dung dịch Cu(NO3)2.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sản phẩm của phản ứng phân hủy canxicacbonat bởi nhiệt là :
CaO và CO
CaO và CO2
CaO và SO2
CaO và P2O5
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