
ĐỀ 8 (3/5)
Authored by Nguyen Hanh
Chemistry
12th Grade
Used 2+ times

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24 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
X là loại đường có nhiều trong quả nho chín. Số nguyên tử H trong phân tử X là?
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Chất nào sau đây là chất điện li mạnh?
H3PO4
BaCl2
H2O
Mg(OH)2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Mùa lạnh, đưa lò than vào trong phòng kín dễ gây ngạt thở. Nguyên nhân gây ngạt thở nhanh là do khí nào sau đây?
CO2
O2
CO
N2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kim loại nào sau đây thuộc nhóm IA trong bảng tuần hoàn?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Etyl axetat có công thức?
HCOOC2H5
CH3COOC2H5
C2H5COOCH3
CH3COOCH3
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Thạch cao nung thu được khi đun nóng thạch cao sống ở 160°C, dược dùng để nặn tượng, bó bột. Công thức của thạch cao nung là?
CaSO4.H2O
CaCO3
CaSO4.2H2O
CaSO4
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Công thức của sắt (III) hidroxit là?
Fe(OH)2
FeO
FeCl3
Fe(OH)3
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