
Bài trắc nghiệm về Base - thang pH
Quiz
•
Chemistry
•
6th - 8th Grade
•
Practice Problem
•
Easy
Hoàng Thùy Dinh
Used 7+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Công thức hóa học của iron (III) hydroxide
A.Fe(OH)2.
B.Fe2O3.
C.Fe(OH)3
D. FeO.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Dung dịch nào sau đây làm quỳ tím chuyển sang màu xanh
A. KOH, BaCl2, H2SO4,NaOH
B. NaOH, K2SO4, NaCl, KOH
C. NaOH, KOH, Ba(OH)2,Ca(OH)2
D. KOH, Ba(NO3)2, HCl, NaOH.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Tìm phát biểu đúng
A. Bazơ là hợp chất mà phân tử có chứa nguyên tử kim loại
B. Axit là hợp chất mà phân tử có chứa một hay nhiều nguyên tử H
C. Bazơ hay còn gọi là kiềm
D. Chỉ có bazơ tan mới gọi là kiềm
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: Base không tan trong nước
A. Cu(OH)2
B. NaOH
C. KOH
D. Ca(OH)2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Để nhận biết dung dịch NaOH, HCl ta dùng
A. Nước
B.Phenolphtalein
C. Kim loại
D. Phi kim
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6: Nhóm dung dịch có pH >7 là
A. HCl, NaOH
B. H2SO4, HNO3
C. NaOH, Ca(OH)2
D. CaCl2, KNO3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Nhóm dung dịch có pH < 7 là
A. KCl, KOH
B. H2SO4, HCl
C. LiOH, Ba(OH)2
D. CaCl2, KNO3
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