
Bài tập Tiếng Việt

Quiz
•
Science
•
8th Grade
•
Hard
Thị Trần
FREE Resource
33 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là base?
NaOH.
HCl.
NaCl.
H₂SO₄.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong số các base sau đây, base nào là base tan trong nước?
Mg(OH)₂.
KOH.
Cu(OH)₂.
Fe(OH)₃.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3. Calcium hydroxide được sử dụng rộng rãi trong nhiều ngành công nghiệp. Công thức hoá học của calcium hydroxide là
A. CaOH.
B. Ca(OH)₂.
C. CaSO₄.
D. CaCO₃.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch chất nào sau đây làm quỳ tím hóa xanh?
KCl.
Na₂SO₄.
NaOH.
NaCl.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch nào sau đây làm đổi màu quỳ tím thành xanh?
Potassium hydroxide.
Acetic acid.
Nước.
Sodium chloride.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Có thể dùng chất nào sau đây để khử độ chua của đất?
Vôi tôi (Ca(OH)2).
Hydrochloric acid.
Muối ăn.
Cát.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức hoá học của sodium hydroxide là
Ca(OH)2.
NaOH.
NaHCO3.
Na2CO3.
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