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In the process of rusting iron get...

In the process of rusting iron get

A

reduced

B

decomposed

C

oxidised

D

changed in fine powder

Text Solution

Verified by Experts

The correct Answer is:
D
When iron is rusted it is oxidised to hydrates ferric oxide
`4 Fe + 3O_(2) +x H_(2) O rarr 2Fe_(2) O_(3) . X H_(23)O`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROCHEMISTRY-Exercise 1
  1. The standard reduction potential for Fe^(2+)//Fe and Sn^(2+)//Sn elec...

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  2. What will be the emf for the given half cell Pt|H(2)(P(1)|H^(+)(...

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  3. In the process of rusting iron get

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  4. When lead stroage battery discharges

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  5. Galvanic cell is a device in which

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  6. Which of the following is used widely in the manufacture of lead stora...

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  7. While charging the lead storage battery:

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  8. The process of zinc plating on iron sheet is known as

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  9. In H(2)-O(2) fuel cell, the reaction occurring at cathode is

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  10. Corrosion of iron is essentially an electrochemical phenomeonon wher...

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  11. What is the compostion of rust ?

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  12. Which coloruless gas evolves when NH(4)CI reacts with zinc in a dr...

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  13. The acid used in lead storage battery is

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  14. On the basis of electrochemical theory of aqueous corrosion, the react...

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  15. The batteris which cannot be reused again are

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  16. Dry cell is a

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  17. Which of the following statement in incorrect for dry cell ?

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  18. Which among the following cell has longer life and more expensive ...

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  19. Match the terms of column I and column II and choose the correct op...

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  20. Which of the following statements is correct for fuel cells

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