Nước cứng

Quiz
•
Chemistry
•
12th Grade
•
Medium
Do Phuong
Used 114+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phát biểu nào sau đây sai khi nói về nước cứng ?
Nước cứng là nước có nhiều ion Ca2+ và Mg2+.
Nước cứng tạm thời là nước cứng có chứa Mg(HCO3)2.
Nước cứng vĩnh cửu là nước cứng có chứa MgCO3 và MgCl2.
Nước mềm là nước có chứa ít ion Ca2+ và Mg2+.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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