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Which of the following makes the ore porous and more reactive?

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Question

Which of the following makes the ore porous and more reactive?

Options

  • Calcination

  • Roasting

  • Both calcination and roasting

  • Neither calcination nor roasting

MCQ
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Solution

Both calcination and roasting

Explanation:

Both calcination and roasting involve heating the ore to high temperatures. This drives out volatile impurities and moisture, leaving behind a highly porous and chemically reactive metal oxide.

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Chapter 7: Metallurgy - EXERCISE [Page 156]

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Lakhmir Singh Chemistry [English] Class 10 ICSE
Chapter 7 Metallurgy
EXERCISE | Q 3. | Page 156
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