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Corrosion

Based on the ...

Question

Based on the following information, arrange four metals A, B, C and D in order of decreasing ability to act as reducing agents:
(I) Only A, B and C react with 1 MHCl to give $H_{2} (g)$
(II) When C is added to solutions of the other metal ions, metiallic B and D are formed
(III) Metal C does not reduce $A^{n +}$

A

C > A > B > D

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B

C > A > D > B

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C

A > C > D > B

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D

A > C > B > D

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Solution

The correct option is D A > C > B > D
D does not react with HCl, so it is not easily oxidized as compared to A, B and C.
C reduced B as well as D but is unable to reduce A. Hence, C is oxidised easily than B and D.
So, A is oxidized easily as compared to other metals therefore, it has ability to act as easily as compared to other metals.

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Similar questions

Q. Based on the following information arrange four metals A,B,C and D in order of decreasing ability to act as reducing agents:
(I) Only A,B and C react with 1M HCl to give

H_{2} (g)

(II) When C is added to solutions of the other metal ions, metallic B and D are formed
(III) Metal C does not reduce

A^{n +}

Q. Based on the following information arrange four metal

A, B, C

D

in order of decreasing ability to act as reducing agent:-
(I) Only A , B and C react with 1MHCl to give

H_{2} (g)

(II) When C is added to solution of the other metal ions metallic

B

D

are formed
(III) Metal C does not reduce

A^{n +}

Q. Given the following reactions involving

A, B, C

D

.

C + B^{+} \to C^{+} + B

A^{+} + D \to

C^{+} + A \to

D + B^{+} \to D^{+} + B

The correct arrangement of

A, B, C, D

in order of their decreasing ability as a reducing agent?

Q. Question 3(iii)
Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows:

\begin{matrix} M e t a l & I r o n (I I) s u l p h a t e & C o o p e r (I I) s u l p h a t e & Z i n c s u l p h a t e & S i l v e r n i t r a t e A . & N o r e a c t i o n & D i s p l a c e m e n t B . & D i s p l a c e m e n t & N o r e a c t i o n C . & N o r e a c t i o n & N o r e a c t i o n & N o r e a c t i o n & D i s p l a c e m e n t D . & N o r e a c t i o n & N o r e a c t i o n & N o r e a c t i o n & N o r e a c t i o n \end{matrix}

Use the Table above to answer the following questions about metals A, B, C and D.
(iii) Arrange the metals A, B, C and D in the decreasing order of reactivity.

Q. Sample of four metals

A, B, C

D

were taken and added to the following solution one by one. The results obtained have been tabulated as follows :

Metal	Iron $(I I)$ Sulphate	Copper $(I I)$ Sulphate	Zinc Sulphate	Silver Nitrate
A	No reaction	Displacement
B			Displacement
C	No reaction	No reaction	No reaction	Displacement
D				No reaction

Use the table above to answer the questions about metal

A, B, C

D

.
Arrange the metals

A, B, C

D

in order of decreasing reactivity.

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