
Base
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Easy
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1. Chất nào sau đây là base?
NaOH
HCl
NaCl
H2SO4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2. 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
Calcium hydroxide được sử dụng rộng rãi trong nhiều ngành công nghiệp. Công thức hoá học của calcium hydroxide là
CaO.
Ca(OH)2.
CaSO4.
CaCO3.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4. 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
Dãy gồm các dung dịch nào sau đây làm đổi màu quỳ tím thành xanh?
NaOH, BaCl2, HBr, KOH.
NaOH, Na2SO4, KCl, H2O2.
NaOH, Ba(OH)2, Ca(OH)2, KOH.
NaOH, NaNO3, KOH, HNO3.
7.
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
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