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The naturally occurring chemical substan...

The naturally occurring chemical substances in form of which occur in the earth along with impurities are called ____.

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The correct Answer is:
Minerals
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PRADEEP-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -TEST YOUR GRIP (II. FILL IN THE BLANKS)
  1. The naturally occurring chemical substances in form of which occur in ...

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  2. Minerals from which metals are extracted conveniently and economically...

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  3. The earthly and siliceous impurities which generallty occur with ores...

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  4. The complete of extracting the metal form its ores is called .

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  5. Highly reactive elements occurs in nature instate.

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  6. The most abundant metal in the earth's crust is ………… .

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  7. Calcination is the process of heating the ore strongly in the of air.

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  8. An ore of tin containing FeCrO4 is concentrated by …………. .

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  9. ores are concentrated by froth flotation and roasted in excess of air ...

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  10. involves treating the powdered ore with a suitable reagent which selec...

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  11. Sodium cyanide solution is used to extract or from its ores.

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  12. Flux combines the infusible impurities to form.

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  13. acts as an acidic flux whileacts as a basic flux.

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  14. In the metallurgy of copper, the flux used to remove the basic impurit...

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  15. During extraction of iron from haematite, the flux used is .

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  16. ………… involves reduction of metal oxide with coke or carbon monox...

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  17. In the thermite process, is used as a reducting agent.

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  18. …………..is the purest form of iron.

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  19. Above 1073 K, ………… reduces FeO to Fe while below 1073K, …………… r...

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  20. Highly electropositive metals like sodium, megnesium or aluminium ...

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