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Electromagnetic separation is used in the concentration of
Options
(a) copper pyrites
(b) bauxite
(c) cassiterite
(d) cinnabar
Correct Answer:
cassiterite
Explanation:
Electromagnetic separation is used when either the ore or the impurities associated with it are magnetic in nature . For example, Cassiterite (SnO₂, tinstone) an ore of tin (non – magnetic) is separated from impurities of ferrous tungstate(wolframite,FeWO₄) which are magnetic in nature.
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- After tow hours, the ratioactive substance becomes 1/16th of original amount
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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
- Number of isomers of C₄H₁₀ is
- After tow hours, the ratioactive substance becomes 1/16th of original amount
- Aqueous solution of Cu (II) gives an intense blue solution with ammonia,which is due
- Treatment of a mixture of CH₃Cl and C₂H₅Cl with sodium in dry ether can generat
- The solubility of BaSO₄, in water, is 2.33 ˣ 10⁻³ g/L.Its solubility product
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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