
Amino axit
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Chemistry
12th Grade
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho dãy các chất: H2NCH2COOH, C6H5OH, C2H5NH2, CH3COOH. Số chất trong dãy phản ứng được với NaOH trong dung dịch là
2
1
3
4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch nào sau đây làm phenolphtalein đổi màu ?
axit axetic
Glyxin
Alanin
Metylamin
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy chỉ chứa những amino axit có số nhóm amino và số nhóm cacboxyl bằng nhau là:
Gly, Ala, Glu.
Gly, Val, Lys
Gly, Ala, Lys
Gly, Val, Ala.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch nào sau đây làm quỳ tím đổi thành màu xanh?
glyxin
alanin
lysin
valin
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dùng quỳ tím có thể phân biệt được dãy các dung dịch nào sau đây ?
Glyxin, Alanin, Lysin
Glyxin, Valin, axit Glutamic
Alanin, axit Glutamic, Valin
Glyxin, Lysin, axit Glutamic
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho 0,01 mol aminoaxit X phản ứng vừa đủ với 0,01 mol H2SO4 hoặc 0,01 mol NaOH. Công thức của X có dạng là
(H2N)2RCOOH
H2NRCOOH
H2NR(COOH)2
(H2N)2R(COOH)2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho các chất sau: (1) metyl amin; (2) Glyxin; (3) Lysin; (4) axit Glutamic; (5) Valin. Số dung dịch làm quỳ tím hóa xanh là
2
3
4
5
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