
hóa 2
Quiz
•
Chemistry
•
3rd Grade
•
Hard
Thanh Nguyễn
FREE Resource
24 questions
Show all answers
1.
OPEN ENDED QUESTION
3 mins • 1 pt
Nguyên tắc làm mềm nước cứng là làm giảm nồng độ của các ion A. Ca2+, Mg2+. B. 3HCO,Cl-. C. 24
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Kim loại Al không tan được trong dung dịch nào sau đây?
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại có số oxi hóa +3 duy nhất là
Al
Fe
Ca
Na
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thành phần chính của đá vôi là A. CaCO3. B. BaCO3. C. MgCO3. D. FeCO3.
CaCO3
BaCO3
MgCO3
FeCO3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây được dùng để làm mềm nước có tính cứng vĩnh cửu?
Ba(OH)2
NaOH
HCl
Na2CO3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây còn được gọi là vôi tôi? A. CaO. B. Ca(OH)2. C. CaCO3. D. Ca(HCO3)2.
CaO
Ca(OH)2
CaCO3
Ca(HCO3)2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho Ba vào dung dịch chất X, thu được kết tủa. Chất X là A. HCl. B. HNO3. C. NaCl. D. Fe(NO3)3.
HCl
HNO3
NaCl
Fe(NO3)3
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