Ôn tập: Oxi - Không khí (Hóa 8)
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium

Xuan Le
Used 69+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một oxit có công thức hóa học là N2O5. Tên gọi nào sau đây là đúng?
nitơ (V) oxit.
nitơ đioxit.
nitơ oxit.
đinitơ penta oxit.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hợp chất có công thức Cu2O có tên là
đồng oxit.
đồng (II) oxit.
đồng (I) oxit.
đồng từ oxit.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy chỉ gồm các oxit axit là
CO, Al2O3, P2O5.
FeO, CaO, Fe2O3.
CO2, SO2, N2O5.
Na2O, BaO, SO2.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy các chất nào sau đây toàn là oxit bazơ
FeO, Na2O, NO.
CO, SO3, P2O3.
K2O, CaO, CO2.
MgO, CaO, K2O.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khi phân huỷ hoàn toàn (có xúc tác) 24,5 gam KClO3, thể tích khí oxi (đktc) thu được là
6,72 lít.
4,48 lít.
2,24 lít.
3,36 lít.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khối lượng KMnO4 cần dùng để điều chế được 1,12 lít khí oxi (đktc) là
42,8 gam.
7,9 gam.
15,8 gam.
39,5 gam.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để đốt cháy hoàn toàn 10,8 gam bột nhôm cần V lít không khí (ở đktc). Giá trị của V là
6,72 lít.
3,36 lít.
0,672 lít.
33,6 lít.
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