
Gia Ann
Authored by Gia An
Chemistry
9th Grade
Used 33+ times

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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất tác dụng với nước tạo ra dung dịch bazơ
CO2
Na2O
SO2
P2O5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất tác dụng với nước tạo ra dung dịch axit là
K2O
CuO
P2O5
Cao
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất khí nào sau đây là nguyên nhân gây ra hiệu ứng nhà kính
CO2
O2
N2
H2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy chất sau đây chỉ gồm các axit
MgO,Ba(OH)2, CaSo4,HCl
MgO,CaO,CuO,Feo
SO2,CO2,NaOH,CaSO4
CaO,Ba(OH)2,MgSO4,BaO
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
0,05 mol FeO tác dụng vừa đủ với
0,02 mol HCl
0,1 mol HCl
0,05 mol HCl
0,01 mol H2SO4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
0,5 mol CuO tác dụng vừa đủ với
0,5 mol H2SO4
0,25 mol HCl
0,5 mol HCl
0,1 mol H2SO4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thể tích khí hidro (đktc) cần dùng để khử hoàn toàn hỗn hợp gồm 20 g CuO và 111,5 g PbO là
11,2 lit
16,8 lit
5,6 lit
8,4 lit
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