
Oxide, base, muối -HSG
Quiz
•
Chemistry
•
8th Grade
•
Easy
Tạ Xuân
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59 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Chất nào sau đây là base?
KOH.
HCl.
NaCl.
H2SO4.
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Trong số các base sau đây, base nào là base tan trong nước?
Fe(OH)2
KOH
Cu(OH)2
Fe(OH)3
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Calcium hydroxide được sử dụng rộng rãi trong nhiều ngành công nghiệp. Công thức của calcium hydroxide?
CaO.
Ca(OH)2.
CaSO4.
CaCO3.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Dung dịch chất nào sau đây làm quỳ tím hóa xanh?
NaCl.
Na2SO4.
NaOH
HCl.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhóm các dung dịch có pH < 7
HCl, NaOH.
Ba(OH)2, H2SO4
NaCl, HCl.
H2SO4, HNO3.
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Sodium hydroxide (hay xút ăn da) là chất rắn, không màu, dễ nóng chảy, hút ẩm mạnh, tan nhiều trong nước và tỏa ra một lượng nhiệt lớn. Công thức của sodium hydroxide
Ca(OH)2.
NaOH.
NaHCO3.
Na2CO3.
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Dung dịch nào sau đây có pH < 7
NaOH.
Ba(OH)2
NaCl.
H2SO4.
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