Hóa 9
2nd Grade
•16 Qs
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Hóa 9
Quiz
•
Chemistry
•
2nd Grade
•
Practice Problem
•
Medium
Nguyệt Đặng
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16 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại nào dưới đây không tác dụng được với dung dịch HNO3 đặc nguội và H2SO4 đặc nguội ?
Al
Fe
Mg
Cả A và B đều đúng
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy kim loại nào sau đây tác dụng được với nước ở nhiệt độ thường ?
Na, K, Ba, Ca
Fe, Na, Ca, Li
Al, Mg, K, Ba
Na, K, Ca, Mg
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch nào làm quỳ tím chuyển sang màu đỏ ?
Dung dịch axit
Dung dịch muối
Dung dịch kiềm
Dung dịch cồn
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phản ứng hóa học nào sau đây viết sai?
Fe + H2SO4 => FeSO4 + H2.
NaOH + HCl => NaCl + H2O.
2Ag + H2SO4 => Ag2SO4 + H2.
FeO + 2HCl => FeCl2 + H2O.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho các oxit axit sau: CO2 ; SO3 ; N2O5 ; P2O5 . Dãy axit tương ứng với các oxit axit trên là:
H2SO3, H2SO3, HNO3, H3PO4
H2CO3, H2SO3, HNO3, H3PO4
H2CO3, H2SO4, HNO2, H3PO4
H2CO3, H2SO4, HNO3, H3PO4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Hòa tan hết 8,4 gam CaO vào 100 gam nước thu được dung dịch A. Nồng độ % của A là
12,45%.
12%.
11,36%.
10,06%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào dưới đây là muối trung hòa ?
Ba(OH)2
Ca(NO3)2
H3PO4
CuO
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