Buổi sau mọi người thích ôn tiếp 11 hay làm HC 12

HC11 TIẾP

Quiz
•
Science
•
9th - 12th Grade
•
Easy

Thùyy Dươnn
Used 2+ times
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
11
12
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Anken X có công thức cấu tạo CH3-CH2-C(CH3)=CH-CH3. Tên của X là
2-etylbut-2-en
3-metylpent-3-en
iso hexan
3-metylpent-2-en
Answer explanation
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Cho các chất sau đây: metan, etilen, propin, stiren, isopren, toluen,
vinylaxetilen. Số chất tác dụng được với dung dịch brom là
4
5
7
6
Answer explanation
Gồm etilen, propin, stiren, isopren, vinylaxetilen
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho CH3CH2CHO phản ứng với H2 (xúc tác Ni, đun nóng) thu được
CH3CH2OH
CH3CH2CH2OH
CH3COOH
CH3OH
Answer explanation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây có nhiệt độ sôi thấp nhất?
Đimetyl xeton
Axit etanoic
Phenol
Propan-1-ol
Answer explanation
Quá đẹp trai luôn!!!
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Đun 6 gam axit axetic với 6,9 gam etanol ( H2SO4 đặc xúc tác) đến khi phản ứng đạt trạng thái cân bằng được m gam este ( hiệu suất phản ứng este hóa đạt 75%). Giá trị của m là?
6,6g
8,8g
9,9g
13,2g
Answer explanation
mol CH3COOH=0,1
mol C2H5OH=0,15
=> ancol dư
=> mol este =mol axit = 0,1
=> m= 0,1 . 75% . 88= 6,6g
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
C4H10O có bao nhiêu đồng phân ancol ?
5
2
3
4
Answer explanation
Gồm
+ butan- 1- ol
+ 2- metylpropan- 1- ol
+ butan- 2- ol
+ 2- metylpropan- 2- ol
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