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Which of the following is not an ore of ...

Which of the following is not an ore of magnesium?

A

Carnallite

B

Magnesite

C

Dolomite

D

Gypsum

Text Solution

Verified by Experts

The correct Answer is:
D
Gypum is an ore of calcium and not of magnesium. The structural formula of gypsum is `CaSO_(4). 2H_(2)O`
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NCERT FINGERTIPS-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Assertion And Reason
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  5. (A) Roasting is a process in which the ore is heate in presence of air...

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  6. Assertion : Reduction of a metal oxide is easier if the metal formed i...

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  7. Assertion : Sulphide ores are converted to oxides before reduction. R...

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  8. Assertion : Magnesium metal is not used for the reduction of alumina i...

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  9. Assertion : In the metallury of aluminium , purified Al(2)O(3) is mixe...

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  10. Assertion: Limestone addes in the blast furance decomposes to give CaO...

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  11. Assertion : Tin is refined by liquation method. Reason : Tin has low...

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  12. Assertion : In electrolytic refining of metal, impure metal is made ca...

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  14. Assertion: Nickel is purified by reaction it with CO. Reason: Impur...

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  15. Assertion : van Arkel method is used for refining of Zinc. Reason :...

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  16. Assertion : Chromatography in general involves a mobile (a gas, a liqu...

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