Tin stone or Cassiterite can be separated from gangue by

calcination

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magnetic separation

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gravity separation

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roasting

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Solution

The correct option is B
magnetic separation

Electromagnetic separation is used to separate magnetic ore particles from non-magnetic impurities (or vice versa), wherein electromagnets present in the rotor attracts magnetic ores and forms a separate heap than the impurities. Tin stone (also known as Cassiterite) contains $S n O_{2}$ (non-magnetic) and Wolframite, $F e W O_{4}$ (magnetic) and is concentrated by this method.

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Similar questions

Q. Magnetic ores can be easily separated by gravity separation method.

State the principle for each of the following processes which are used in metallurgy in general.
(i) Roasting
(ii) Gravity separation
(iii) Froth flotation
(iv) Aluminothermy
(v) Calcination
(vi) Electromagnetic separation.

Q. Assertion :Statement- I : Wolframite impurities are separated from cassiterite by electromagnetic separation. Reason: Statement- II : Cassiterite being magnetic is attached by the magnet and forms a separate heap.

Gravity separation is generally applicable for heavier ores such as Haematite and Cassiterite.

Q. Gravity separation is based on the difference in the ____ of the ore and the gangue.

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