
hóa 1-35
Authored by Hoài Thu
Other
12th Grade
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35 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Số electron lớp ngoài cùng của các nguyên tử kim loại thuộc nhóm IA là
3
2
4
1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Công thức chung của oxit kim loại thuộc nhóm IA là
R2O3.
RO2.
R2O.
RO
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Cấu hình electron của nguyên tử Na (Z =11) là
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: Chất phản ứng được với dung dịch NaOH tạo kết tủa là
KNO3.
FeCl3
. BaCl2.
K2SO4.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch làm quỳ tím chuyển sang màu xanh là
A. NaCl
B. Na2SO4.
C. NaOH
D. NaNO3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sản phẩm tạo thành có chất kết tủa khi dung dịch Na2CO3 tác dụng với dung dịch
A. KCl. B. KOH. C. NaNO3. D. CaCl2.
A. KCl.
B. KOH.
C. NaNO3
D. CaCl2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Khi nhiệt phân hoàn toàn NaHCO3 thì sản phẩm của phản ứng nhiệt phân là
A. NaOH, CO2, H2.
B. Na2O, CO2, H2O.
C. Na2CO3, CO2, H2O.
D. NaOH, CO2, H2O.
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