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When the ore limestone is heated carbon dioxide is given off. This operation in metallurgy is known as
Options
(a) smelting
(b) ore dressing
(c) calcination
(d) roasting
Correct Answer:
calcination
Explanation:
CaCO₃(s) → CaO(s) + CO₂(g)
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Topics: Surface Chemistry and Isolation of Elements
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Subject: Chemistry
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Reaction between an acyl halide and the sodium salt of a fatty acid results in
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- If a 0.00001 M solution of HCl is diluted thousand folds the pH of the resulting
- The equivalent weight of phosphoric acid(H₃PO₄) in the reaction
- The first step in bakelite formation is
Topics: Surface Chemistry and Isolation of Elements (88)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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