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Question

Among the metals, the one that cannot be obtained by the reduction of its metal oxide.
  1. Cr
  2. Fe
  3. Mn
  4. Mg

A
Fe
B
Mg
C
Mn
D
Cr
Solution
Verified by Toppr

Actually the oxides of metals like Zn,Pb and other metals which are not very reactive can be reduced by Carbon. However oxides of very reactive metals (eg Aluminium,Chromium) can't be reduced by Carbon . Since they are very reactive they react with carbon to form their carbides hence are not effective in reduction.

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