Chất nào là chất lưỡng tính
A.Al.
B.Zn.
C. $ F{ e _ 2 }{ O _ 3 } $ .
D. $ A{ l _ 2 }{ O _ 3 } $ .

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
In the kitchen, there is ___________table.
A.large beautiful wooden round
B.wooden round large beautiful
C.beautiful large round wooden
D.round large wooden beautiful

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
That poor man used to live in a ______ house.
A.modern big brick
B.big modern brick
C.brick big modern
D.modern brick big

Theo thuyết A-rê-ni-ut, chất nào sau đây là axit?
A. $ { C _ 2 }{ H _ 5 }OH $
B. $ N{ H _ 3 } $
C. $ C{ H _ 3 }COOH $
D.KOH

Theo thuyết A-rê-ni-ut, chất nào sau đây là bazo?
A.$KOH.$
B.$ { C _ 2 }{ H _ 5 }OH $.
C.$ { HCl}$.
D.$ C{ H _ 3 }COOH $.

Theo thuyết A-rê-ni-ut thì chất nào sau đây là muối trung hòa?
A. $ N{ a _ 2 }HP{ O _ 4 } $
B. $ {{\left( N{ H _ 4 } \right)}_ 2 }S{ O _ 4 } $
C. $ NaHC{ O _ 3 } $
D. $ NaHS{ O _ 4 } $

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
In the United States ________ the states but Hawaii is an island.
A.neither of
B.all of
C.none of
D.no of

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Jane only makes cakes with the ________ butter.
A.best unsalted Danish
B.best Danish unsalted
C.unsalted best Danish
D.Danish best unsalted

Dãy nào sau đây gồm các hiđroxit lưỡng tính?
A.$ Fe{{\left( OH \right)}_ 3 },Mg{{\left( OH \right)}_ 2 },Zn{{\left( OH \right)}_ 2 } $.
B.$ Ca{{\left( OH \right)}_ 2 },Pb{{\left( OH \right)}_ 2 },Zn{{\left( OH \right)}_ 2 } $.
C.$ Ba{{\left( OH \right)}_ 2 },Al{{\left( OH \right)}_ 3 },Sn{{\left( OH \right)}_ 2 } $.
D.$ Zn{{\left( OH \right)}_ 2 },Al{{\left( OH \right)}_ 3 },Sn{{\left( OH \right)}_ 2 } $.

Theo A-rê-ni-ut, hiđroxit nào sau đây có tính lưỡng tính ?
A.$ Pb{{\left( OH \right)}_ 2 } $ 
B.$ Zn{{\left( OH \right)}_ 2 } $ 
C.$ Al{{\left( OH \right)}_ 3 } $ 
D.Tất cả