
OXI MẠNH NHẤT
Authored by nguyệt phạm
Science
6th - 8th Grade
Used 3+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Quá trình nào dưới đây không làm giảm lượng oxi trong không khí?
Sự gỉ của các vật dụng bằng sắt
Sự cháy của than, củi, bếp ga
Sự quang hợp của cây xanh
Sự hô hấp của động vật
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Dãy oxit nào là oxit bazơ?
BaO, CaO, CuO, Fe2O3
SO3, Na2O, CaO, P2O5
ZnO, CO2, SiO2, PbO
SO2, Al2O3, HgO, K2O
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Oxit kim loại nào dưới đây là oxit axit?
MnO2
Cu2O
CuO
Mn2O7
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Oxit nào dưới đây góp nhiều phần nhất vào sự hình thành mưa axit?
CO2( cacbon đioxit)
SO2 ( lưu huỳnh đoxit)
CO( cacbon oxit)
SnO2( thiếc đioxit)
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Trong phòng thí nghiệm cần điều chế 4, 48lít O2 (đktc)
Dùng chất nào sau đây để có khối lượng nhỏ nhất
A. KClO3
B. KMnO4
C. KNO3
D. H2O( điện phân)
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