
hoáaaa
Quiz
•
Chemistry
•
9th Grade
•
Medium

oanh diepp
Used 2+ times
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57 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Chắc tác dụng với nước tạo ra dung dịch bazơ là
K2O
CuO
CO
SO2
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
chất khí nào sau đây là nguyên nhân gây ra hiệu ứng nhà kính?
CO2
O2
N2
H2
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sắt(lll) oxit (Fe2O3) tác dụng được với
Nước, sản phẩm là axit
Axit, sản phẩm là muối và nước
Nước, sản phẩm là bazơ
Bazơ, sản phẩm là muối và nước
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Để hòa tan hoàn toàn 3,6g FeO cần bao nhiêu gam dd axit clohđric 10%?
1,825g
3,65g
18,25g
36,5g
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Chất nào sau đây thuộc loại ôxít lưỡng tính?
Al2O3
CO
CaO
SO2
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Một ôxít của sắt có thành phần phần trăm theo khối lượng của ép e bằng 70 % biết phân tử khối của ôxít bằng 160đvC . Công thức hoá học oxit là
FeO
Fe3O4
Fe2O3
Cả A và B
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Để tách riêng Fe2O3 ra khỏi hỗn hợp BaO và Fe2O3 ta dùng:
Nước
giấy quỳ tím
dd HCl
dd
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