
Hóa 9 - KTGK I - 1 HP
Authored by Luna Jan
Chemistry
8th Grade
Used 6+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điện phân dung dịch NaCl có màng ngăn, sản phẩm thu được là
NaCl, NaClO, Cl2.
NaClO, H2, Cl2.
NaOH, H2, Cl2.
NaCl, NaClO, H2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch NaOH phản ứng với dãy chất
CaCO3, H2S.
KCl, Cu(NO3)2.
CO2, K2SO4.
SO3, CuSO4.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho dung dịch NaOH vào ống nghiệm đựng dung dịch FeCl3
Hiện tượng quan sát được là
Có kết tủa nâu đỏ
Có kết tủa màu xanh.
Có kết tủa màu hồng
Có kết tủa màu trắng.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dẫn 2,24 lít khí CO2 (ở đktc) qua dung dịch Ca(OH)2 dư sinh ra chất kết tủa màu trắng có khối lượng là (Ca=40, C=12, O=16)
1g
10g
100g
0,1g
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phân bón kép là phân bón
dành cho cây hai lá mầm.
dành cho cây một lá mầm.
Có chứa nhiều nguyên tố dinh dưỡng
có chứa một nguyên tố dinh dưỡng
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch có pH > 7 là
BaCl2
Na2CO3
H2SO4
NaOH
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Muối nào bị phân hủy bởi nhiệt?
CaCO3
KCl
Na2SO4
BaCl2
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