
Bài test Hoá
Quiz
•
Chemistry
•
8th Grade
•
Medium
Khánh Nhi Nguyễn
Used 2+ times
FREE Resource
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25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương pháp chứng cất được dùng để tách một hỗn hợp gồm:
nước với muối ăn
nước với rượu
cát với đường
bột sắt với lưu huỳnh
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đâu là công thức hoá học của nước
H2O
H2
O2
HO2
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Đâu là đơn chất
H2O
H2
O2
N2
NaCl
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho 13g kẽm tác dụng với HCl theo sơ đồ phản ứng:
Zn + HCl → ZnCl2 + H2
Tính thể tích khí H2 (đktc) thu được?
3,36 (l)
4,48 (l)
2,24 (l)
5,36 (l)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hạt nhân nguyên tử cấu tạo bởi:
Proton và electron
Proton và nơtron
Nơtron và electron
Proton, nơtron và electron
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy chất gồm các đơn chất:
Na, Ca, CuCl2, Br2.
Na, Ca, CO, Cl2
Cl2, O2, Br2, N2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các dãy chất sau dãy nào toàn là hợp chất?
C, H2, Cl2, CO2
H2, O2, Al , Zn
CO2, CaO, H2O
Br2, HNO3, NH3.
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