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Aluminothermy used for on the spot weldi...

Aluminothermy used for on the spot welding of large iron structures is based upon the fact that

A

As compared to iron, aluminium has greater affinity for oxygen

B

As compared to aluminium iron has greater affinity for oxygen

C

Refraction between aluminium and oxygen is endothermic

D

Reaction between iron and oxygen is endothermic.

Text Solution

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The correct Answer is:
A
Aluminothermy used for on the spot welding of large iron structures is based upon the fact that as compared to iron, aluminium has greater affinity for oxygen.
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DINESH PUBLICATION-THE BORON FAMILY -RQ(Revision Questions From Competitive Exams.)
  1. Which of the following mineral does not contain Al?

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  2. Which of the following processes does not involve a catalyst ?

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  3. Aluminothermy used for on the spot welding of large iron structures is...

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  4. Which of the following statements is not true for Al and B ?

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  5. Which of the following oxide is amphoteric ?

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  6. The chief ore of aluminium is

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  7. Name a metal other than aluminium that is covered with a layer of oxid...

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  8. The chemical formula of bauxite is

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  9. Al(2)O(3) formation from aluminium and oxygen involves evolution of a ...

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  10. Inert pair effect plays an important role in case of

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  11. Which member of group 13 does not exhibit the group valency in its com...

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  12. In which of the following elements +1 oxidation state is more stable t...

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  13. Aluminium becomes passive in

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  14. Which is true for an element R present in 13 th group of the perodic ...

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  15. An example of alum is

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  16. Alum is not used

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  17. Which is used in high temperature thermometry ?

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

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  19. Aluminium vessels should not be washed with materials containing washi...

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  20. In the thermite welding process we use

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