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How is concentrated ore changed to oxide?

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Question

How is concentrated ore changed to oxide?

Answer in Brief
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Solution

Concentrated ore (ZnS) is changed into oxide (ZnO) by heating ZnS in excess of air.

\[\ce{2ZnS + 3O2 ->[800^\circ C]2ZnO + 2SO2}\]

ZnO becomes porous and more easy to reduce.

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Chapter 7: Metallurgy - EXERCISE-7B [Page 129]

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S.P. Singh Concise Chemistry [English] Class 10 ICSE
Chapter 7 Metallurgy
EXERCISE-7B | Q 7. (c) | Page 129
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