
24 câu đầu (tuần 1 học online - thứ 2)
Quiz
•
Chemistry
•
1st - 12th Grade
•
Practice Problem
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Medium
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24 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
(NB) Thuỷ phân este X trong môi trường kiềm, thu được natri axetat và ancol etylic. Công thức của X là:
C2H3COOC2H5
C2H5COOCH3
CH3COOC2H5
CH3COOCH3
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Công thức của axit stearic là
C17H35COOH.
C17H33COOH.
C17H31COOH.
C15H31COOH.
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Chất nào sau đây thuộc loại polisaccarit?
Tinh bột
Saccarozơ
Glucozơ
Mantozơ
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Dung dịch nào sau đây làm quỳ tím chuyển màu xanh?
Etylamin
Anilin
Alanin
Axit Axetic
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Phân tử amino axit nào sau đây có hai nhóm amino?
Lysin
Valin
Axit Glutamic
Alanin
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Phân tử polime nào sau đây chứa nguyên tố C, H và O?
Polietilen.
Poli(vinyl clorua).
Poli(metyl metacrylat).
Poliacrilonitrin.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Kim loại nào sau đây cứng nhất trong các kim loại?
Cr
Ag
W
Au
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