
Kiểm tra từ vựng chuyên ngành
Quiz
•
Others
•
9th Grade
•
Practice Problem
•
Easy
Tri Ngoc
Used 4+ times
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18 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Chất nào dưới đây làm mất mà dd brom?
CH3 -CH2-CH=CH2
Ch4
C2h5
CH3-O-CH3
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Cho biết công thức hóa học của nước.
HO
H2
O
H2O
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Dãy các hợp chất nào sau đây là hợp chất hữu cơ?
Ch4,c2h6,co2
C2h6, ch4, c2h5oh
Ch4 ,c2h2, co
C2h2, C2h60 ,CaCO3
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Viết công thức hóa học của oxit sắt (III).
Fe3O4
FeO
Fe2O3
FeO2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính chất nào của axit làm đổi màu giấy quỳ từ đỏ sang xanh?
Tính chất chất trung hòa
Tính chất axit
Tính chất chất khử
Tính chất kiềm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số mL rượu etylic có trong 250ml rượu 45 độ là
:
250ml
215ml
75ml
112,5 ml
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Viết công thức hóa học của muối natri clorua.
H2O
C6H12O6
NaCl
CO2
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