ÔN TẬP CUỐI KÌ 2 LỚP 12
Quiz
•
Chemistry
•
9th - 12th Grade
•
Medium
GV Thọ
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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để bảo vệ vỏ tàu biển làm bằng thép người ta thường gắn vào vỏ tàu (phần ngâm dưới nước) những tấm kim loại :
Cu
Zn
Sn
Pb
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các kim loại cho dưới đây, kim loại nhẹ nhất là
Li
Na
K
Cs
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại nào sau đây là kim loại kiềm ?
Fe
Al
Cs
Mg
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại nào sau đây là kim loại kiềm thổ ?
Cu
Mn
Cr
Ca
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thành phần chính của đá vôi là
CaCO3.
BaCO3.
MgCO3.
FeCO3.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nước cứng chứa nhiều ion
Na+, K+
Ca2+, Mg2+
Fe2+, Fe3+
Cu2+, Al3+
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để làm mềm nước cứng tạm thời và nước cứng vĩnh cửu, người ta dùng
NaCl
Na2SO4
NaNO3
Na3PO4
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