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Assertion: All minerals are ore. Reaso...

Assertion: All minerals are ore.
Reason: Ores are minerals from which metal can be extracted conveniently and economically.

A

S-I and S-II are true and S-II explains S-I

B

S-I and S-II are true and S-II does not explains S-I

C

S-I is true S-II is false

D

S-I is false S-II is true

Text Solution

Verified by Experts

The correct Answer is:
D
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(A) All minerals are ores (R ) Ores are minerals from which metal can be extracted convenitly and economically

Minerals from which metals are extracted conveniently and economically are called ____.

The mineral from which a metal can be extracted profitably is called ______.

NARAYNA-METALLURGY-STATEMENT TYPE QUESTOINS
  1. Assertion: All minerals are ore. Reason: Ores are minerals from whic...

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  2. Metals of high purity are obtained by zone refining. Impurities are ...

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  3. (A) Au,Pt,Ag etc are found in free state (R ) The metals which are n...

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  4. (A) Roasting is a process in which the ore is heate in presence of air...

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  5. During the electrolysis of aqueous sodium chloride the cathodic reacti...

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  6. The ore that is concentrated by froth floatation process is

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  7. Assertion: Ag and Au are extracted by leaching the ores with a dilute ...

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  8. (A) Alumina has hgih condutivity (R ) The mixture of alumia and cryo...

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  9. What is the percentage of carbon in pig iron and cast iron ?

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  10. Steel contains more carbon than wrought iron

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  11. Aluminium metal is generally used for the extraction of chromium and m...

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  12. Statement-1:Electrolytic reduction of alumina to aluminium by Hall-Her...

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  13. In Froth floatation process for, pine oil functions oil functions as:

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  14. Silver is refined by cupellation process, the process removes the impu...

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  15. Statement-1:Magnesia and quick lime are used as basic flux. Statemen...

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  16. The ore that is concentrated by froth floatation process is

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  17. Assertion : Nickel can be purified by Mond process. Reason : Ni(CO)(...

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  18. Zinc is used to protect corrosion of iron because

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  19. Cinnabar (HgS) and galena (PbS) on roasting give their respective meta...

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  20. Statement-1: Silicones are used as high class industrial insulators. ...

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