Hóa học 9 cuối HKII
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Medium
Chifuyu bruh
Used 2+ times
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28 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức phân tử của metan là
C2H4
C2H6
CH4
C2H2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phân tử metan có
4 liên kết đơn C – H
1 liên kết đôi C = H và 3 liên kết đơn C – H
2 liên kết đơn C – H và 2 liên kết đôi C = H
1 liên kết đơn C – H và 3 liên kết đôi C = H
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khí X có tỉ khối so với hiđro là 14. Khí X có thể là:
C2H6
C2H2
C2H4
CH4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong quá trình chín, trái cây sẽ thoát ra một lượng nhỏ chất khí, chất này kích thích các quả xanh nhanh chín. Khí đó là:
etan
etilen
metan
axetilen
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hóa chất dùng để loại bỏ khí etilen có lẫn trong khí metan là
dung dịch phenolphtalein
dung dịch axit clohidric
dung dịch nước brom dư
dung dịch nước vôi trong
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cấu tạo phân tử axetilen gồm
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một hiđrocacbon ở thể khí thường được dùng làm nhiên liệu để hàn cắt kim loại, đó là
axetilen
etilen
etan
metan
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