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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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- The adjacent sheets are bonded together in graphite with
- For the equilibrium, H₂O(l) ⇌ H₂O(g) at 1 atm and 298 K,
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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 ionic radii of isoelectronic species N³⁻, O²⁻ and F⁻ are in the order
- The adjacent sheets are bonded together in graphite with
- For the equilibrium, H₂O(l) ⇌ H₂O(g) at 1 atm and 298 K,
- The basicity of aniline is weaker in comparison to that of mathyl amine due to
- In the complex with formula MCl₃.4H₂O, the coordination number of the metal M
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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