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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
- The diazotization of two feebly basic aromatic amines is achieved by using
- Acetamide and ethylamine can be distinguished by reacting with
- What is obtained when benzoyl chloride reacts with aniline in the presence of
- Which of the following is never true for cathode rays?
- The number of atoms in 0.004g of magnesium will be
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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