
hoá học
Authored by Ái ailinhtienthang@gmail.com
Chemistry
8th - 9th Grade
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhóm ba zơ làm quỳ tím hóa xanh
KOH, Fe(OH)2
Ba(OH)2, NaOH
Mg(OH)2, NaOH
Ca(OH)2, Zn(OH)2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để nhận biết dd KOH và Ba(OH)2 ta dùng thuốc thử là
Phenolphtalein
Quỳ tím
dd H2SO4
Dd HCl
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phản ứng hóa học nào tạo oxit ba zơ
Ca(OH)2 td với SO2
Cu(OH)2 với HCl
Nung nóng Fe(OH)2
NaOH với HNO3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch NaOH phản ứng với chất nào sau đây tạo thành muối và nước
CO2
HNO3
Cu(OH)2
FeCl3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch Ba(OH)2 không phản ứng được với
Dd Na2CO3
Dd CuCl2
Dd MgSO4
Dd KNO3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
NaOH có thể làm khô chất khí ẩm nào sau?
CO2
SO2
N2
HCl
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch NaOH phản ứng được với kim loại nào sau:
Mg
Al
Fe
Cu
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