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Calcination is the process in which...

Calcination is the process in which

A

Ore is heated above its melting point to expel `H_2`O or `CO_2, or SO_2`

B

Ore is heated below its melting point to expel volatile impurities

C

Ore is heated above its melting point to remove S. As and Sb as `SO_2 , As_@ O_3`, and` Sb_2 O_3`, respectively.

D

Ore is heated below its melting point to expel `H_2 O or CO_2`

Text Solution

Verified by Experts

The correct Answer is:
D
Calcination is process of heating a substnace to a high temperature but below the melting or fusion point causing less of moisture , reduction or oxidation and dissociation into simpler substances .
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DISHA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE -1: CONCEPT APPLICATOR
  1. When copper pyrites is roasted in excess of air, a mixture of CuO + Fe...

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  2. Sulphide ores of metals are usually concentrated by both floatation pr...

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  3. Calcination is the process in which

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  4. Extraction of zinc from zinc blende is achieved by

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  5. In froth flotation process many chemicals (frother, collector, activat...

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  6. In the metallurgy of Zn the Zn dust obtained from roasting and reducti...

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  7. A sulphide ore is first converted into its oxide before reduction. Thi...

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  8. Carbon and CO gas are used to reduce which of the following pairs of m...

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  9. While extracting an element from its ore, the ore is grind and leached...

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  10. Consider the following statements - In the aluminothermite process,...

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  11. Which statement is correct?

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  12. Aluminium is prepared in large quantities by

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  13. The incorrect statement among the following is

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  14. Select the property which forms the basis of hydrometallurgical proces...

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  15. which of the following electronts is present as the impurity to the m...

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  16. Which of the following pairs of metals uis purified by van arkel meth...

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  17. The following reaction take place in the blast in the proparation of i...

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  18. Aluminium is extracted from Alumina (Al(2)O3 ) by electrolysis of a mo...

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  19. Which ore of the following is a mineral of iron ?

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  20. In the exteraction of copper from its sulphide ore, the metal is fanal...

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