Hóa học 12
Quiz
•
Science
•
12th Grade
•
Practice Problem
•
Medium
Ánh Nguyễn
Used 11+ times
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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại nào sau đây tan hết trong nước dư ở nhiệt độ thường?
A. Mg.
B. Al.
C. Fe.
D. K.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nước cứng tạm thời chứa
.
A. ion SO42-
B. ion SO42- và HCO3-
C. ion Cl-.
D. ion HCO3-.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thạch cao nung dùng để đúc tượng, bó bột trong y tế. Công thức của thạch cao nung là
A. CaSO4.2H2O.
B. CaSO4.
C. CaCO3
D. CaSO4.H2O.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất thường được dùng để khử chua đất trong sản xuất nông nghiệp là
A. CaCO3.
B. CaSO4.
C. CaO.
D. CaCl2.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây được gọi là phèn chua, dùng để làm trong nước?
A. K2SO4. Al2(SO4)3.24H2O.
B. Na2SO4. Al2(SO4)3.24H2O.
C. (NH4)2SO4. Al2(SO4)3.24H2O.
D. Li2SO4. Al2(SO4)3.24H2O.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho pư Cu + 2FeCl3 → FeCl2 + CuCl2 chứng tỏ ion:
A. Fe3+ có tính oxi hóa mạnh hơn Cu2+
B. Fe3+ có tính oxi hóa mạnh hơn Fe2+
C. Fe3+ có tính oxi hóa yếu hơn Cu2+
D. Fe2+ có tính oxi hóa mạnh hơn Fe3+
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fe tác dụng với dd H2SO4 (l) sản phẩm thu được là:
A. FeSO4 và H2
B. FeSO4 và SO2
C. Fe2(SO4)3 và H2
D. Fe2(SO4)3 và SO2
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