Q. 5 C5.0( 1 Vote )


Answer :

Frasch method:

i. Frasch method is used for the extraction of sulphur from the core of the earth.

ii. This method is based on the low melting point of sulphur.

iii. Three concentric pipes are passed below in the soil so that they touch the layer of the sulphur.

iv. Superheated water vapour is passed at 443K temperature in the soil through the outermost cylinder.

v. As a result, sulphur melts because of its low melting point.

vi. Then, air is passed through the innermost cylinder so that sulphur and water in the central cylinder come out on the surface and gets cooled.

vii. Sulphur is insoluble in water. Hence, it can easily separated from the solution.

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