
Bài kiểm tra 15'
Authored by minh tran
Chemistry
9th Grade
Used 23+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Dãy chất gồm các oxit axit:
SO2, N2O5, P2O5, CO2.
CuO, CaO, MgO, Na2O
CaO, CO2, K2O, Na2O
K2O, FeO, P2O5, Mn2O7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất tác dụng với nước tạo ra dung dịch axit là:
BaO
Na2O
MgO
P2O5
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Oxit khi tan trong nước tạo thành dung dịch làm giấy quỳ tím chuyển thành màu đỏ là
MgO
K2O
N2O5
CaO
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cacbon đioxit CO2 tác dụng được với:
oxit bazơ, sản phẩm là muối và nước.
bazơ, sản phẩm là muối và nước.
nước, sản phẩm là bazơ.
axit, sản phẩm là muối và nước.
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Oxit nào sau đây tác dụng với CO2 tạo muối cacbonat?
CuO.
Al2O3.
BaO.
Fe2O3.
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cho m gam bột sắt vào dung dịch axit sunfuric loãng dư, phản ứng hoàn toàn tạo ra 6,72 lít khí hiđro (đktc). Giá trị của m là bao nhiêu?
(Cho Fe = 56)
8,4 g.
11,2 g.
15,6 g.
16,8 g.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Hòa tan hết 12,4 gam Natri oxit vào nước thu được 500ml dung dịch A . Nồng độ mol của dung dịch A là :
0,8M
0,4M
0,6M
0,2M
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