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Which of the following undergoes an auto...

Which of the following undergoes an auto (self) reduction ?
i) `PbO`
ii) `Fe_2O_3`
iii) `Cu_2S`
iv) `TiCl_4`

A

`1`. i and ii

B

`2`. ii and iv

C

`3`. iii only

D

`4`. i only

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VGS PUBLICATION-BRILLIANT-PRINCIPLES OF METALLURGY-EXERCISE
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  6. Which of the following metal is low reactivity metal ?

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  9. Which of the following is the correct formula of gypsum?

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  10. Which of the following is not sulphide ore ?

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  11. In which of the following method a stream of water is used ?

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  12. Which of the following is a chemical method ?

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  19. Which part is labelled wrong ?

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