
bhjiu
Authored by Trí Vũ
Other
9th - 12th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Khí thiên nhiên được dùng làm nhiên liệu và nguyên liệu cho các nhà máy sản xuất điện, sứ, đạm, ancol metylic,… Thành phần chính của khí thiên nhiên là
ch4
c2h4
c2h2
c3h6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức tổng quát của ankan là
CnH2n+2 (n ≥1)
CnH2n (n ≥ 2)
CnH2n-2 (n ≥2)
CnH2n-2 (n ≥3)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
số nguyên tử hidro trong phân tử propan là
4
6
8
10
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ankan X có % khối lượng cacbon bằng 80% công thức phân tử của x là
ch4
c2h6
c3h8
c4h10
Answer explanation
CnH2n+2
% khối lượng C =80%
=> 12n/14n+2.100=80%
n =2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong phòng thí nghiệm, CH4 được điều chế trực tiếp từ chất nào sau đây?
CH3COONA
CAC2
C2H2
C2H4
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