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Describe the priniciple of extraction of...

Describe the priniciple of extraction of each of the following i)`Sn` from `Sn O_2`

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i) Sn is obtained from .SnO_2. by using carbon as a reducing agent. .Sn. is a less reactive metal. .Sn ddotO_2+2 C 1473-1573 ~K, Sn+2 CO. ii) .Z n. is obtained fróm .ZnO. using .CO. as a reducing agent at .1600 ~K. : .ZnO+CO stackrel1600 ~K/longrarr Zn+CO_2. iii) .Cr. is obtained from .Cr_2 O_3. using aluminothermic process. .Cr_2 O_3+2 Al rarr Al_2 O_3+2 Cr.
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V PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION BANK
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