
KTTX KHTN 7
Quiz
•
Science
•
7th Grade
•
Hard
Hằng Minh
Used 1+ times
FREE Resource
30 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Hóa trị của O theo quy ước là:
I
II
III
IV
2.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
Nguyên tố H luôn có hóa trị.......
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hóa trị của C trong hợp chất CH4 là
I
II
III
IV
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hóa trị của (PO4) trong hợp chất H3PO4 là
I
II
III
IV
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Hóa trị của C trong hợp chất CO2 là
I
II
III
IV
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Hóa trị của Na trong hợp chất Na2O là
I
II
III
IV
7.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
XY
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