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Yêu bồ
Quiz
•
Chemistry
•
Professional Development
•
Practice Problem
•
Hard
Ngọc Kim
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19 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Kim loại nào sau đây có khối lượng riêng lớn nhất
Li
Os
K
Cr
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Kim loại cứng nhất, có thể rạch được thủ tinh là
Cr
W
Pb
Os
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Kim loại nào sau đây không phản ứng với Fe(NO3)3?
Cu
Fe
Ag
Zn
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Kim loại nào sau đây có thể điều chế bằng phương pháp thủy luyện?
Cu
Na
Ca
Ba
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Kim loại nào sau đây là kim loại kiềm
K
Ca
Al
Mg
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Oxit nào sau đây là oxit axit
Fe2O3
CrO3
FeO
cr2o3
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Ấm đun nước lâu ngày,thường thấy xuất hiện một lớp cặn ở đáy. Thành phần chính của lớp cặn đó là
Cao
Na2co3
Caco3 (đá vôi)
Cacl2
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