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Aluminium is more reactive than iron. Bu...

Aluminium is more reactive than iron. But aluminium is less easily corroded than iron because.

A

Aluminium is a nobel metal

B

Oxygen form a protective oxide layer

C

Iron undergoes reaction easily with water

D

Iron from both mono and divalent ions

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The correct Answer is:
B
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R ). Mark the correct choice as: Assertion : Aluminium is more reactive than iron. Reason : Its corrosion is less than that of iron.

NIKITA PUBLICATION-GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS-Multiple choice questions
  1. Write about Alumino thermic process with examples.

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  2. In the electrolysis of alumina, cryolite is added to

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  3. Aluminium is more reactive than iron. But aluminium is less easily cor...

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  4. Heating pyrites to remove sulphur is called

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  5. The main function of roasting is

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  6. Zone refining is a method to obtain

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  7. Van Arkel method of purification of metals involves converting the met...

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  8. Electrolytic reduction method is used fro the extraction of

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  9. When copper is placed in the atmosphere for sufficient time, a green c...

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  10. Roasting of copper pyrites is done

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  11. In the metallurgy of iron, when limestone is added to the blast furnac...

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  12. The slag obtained during the extraction of copper from coper pyrites i...

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  13. Copper matte consists of:-

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  14. Which method is based on distribution principle?

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  15. Which statement about corrosive sublimate is incorrect ?

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  16. Iron is obtained on large scale from haematite Fe(2)O(3)

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  17. Polling process us used in the purification of

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  18. Spelter is

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  19. Roasting is used during metallurgical operation using

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  20. Pig iron is converted into strrl by decreasing the amount of carbon pr...

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