CHEMISTRY 9
9th Grade
•20 Qs
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CHEMISTRY 9
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Medium
Tuyền Thanh
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1. Oxit nào sau đây phản ứng được với nước (ở điều kiện thường) tạo ra dung dịch bazơ?
A. Na2O.
B. PbO.
C. FeO.
D. CuO.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2. Chất tác dụng với dung dịch axit sunfuric loãng là
A. Ag.
B. Cu.
C. ZnO.
D. SO2.
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Câu 3. Bazơ nào sau đây bị nhiệt phân hủy?
A. KOH.
B. NaOH.
C. Cu(OH)2.
D. Ba(OH)2
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Câu 4. Cặp chất đều tác dụng được với dung dịch NaOH là
A. CuSO4, Fe(OH)3.
B. CO2, SO2.
C. KOH, CuCl2.
D. CuO, SO2.
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Câu 5. Chất dùng để khử chua đất trồng trọt trong nông nghiệp là
A. CaO.
B. CaSO4.
C. Ca(NO3)2. .
D. CaCl2
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Câu 6. Cho 5,4 gam kim loại Al tác dụng với dung dịch HCl vừa đủ thu được V lít H2(đktc). Giá trị của V là
A. 6,72.
B. 4,48.
C. 0,672.
D. 0,448.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hòa tan x gam Al2O3 bằng 400 ml dung dịch H2SO4 0,3M vừa đủ (D = 1,2 g/ml). Tính x.
x=4.80g
x=4.08g
x=8,04g
x=4.04g
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