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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
(88)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- What is the approximate percentage of H₂O₂ in a sample labelled as 10 V?
- K₂Cr₂O₇ on heating with aqueous NaOH gives
- Tert-butyl bromide on treatment with sodium methoxide yields
- Ethanol and dimethyl ether have same empirical formula but ethanol has higher boiling
- Veronal is what type of drug
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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