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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
- Two miscible liquids can be separated by
- If a 0.00001 M solution of HCl is diluted thousand folds the pH of the resulting
- The energy of an electron in the nth Bohr orbit of hydrogen atom is
- The catalyst used in the manufacture of H₂SO₄ by contact process is
- A solid compound XY has NaCl structure . If the radius of the cation is 100 pm,
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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