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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

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
Correct Assertion: All ores are minerals.
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A2Z-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF METALS-Section B - Assertion Reasoning
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  2. Assertion: Metal ores with are either not reduced by carbon or which f...

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  3. Assertion: Sulphide ores are usually concentrated by froth floatation ...

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  4. Assertion: All minerals are ore. Reason: Ores are minerals from whic...

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

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  6. Assertion: Aluminothermy is used for extraction of chromium form chrom...

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

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  8. Assertion: Carbonate and hydroxide orea re concentrated by froth float...

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  9. Assertion: A1 is obtained by high temperature reduction of alumina wit...

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  10. Assertion: Durig calcination the ore is heated well below its melting ...

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  11. Assertion: Electropositive metals like Mg,A1 are extracted by electrol...

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  12. Assertion: In Hall-Heroult process aluminium is extracted by the elect...

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  13. Assertion: In extraction of copper from chalcopyrite after roasting in...

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  14. Assertion: Extraction of zinc from sphalerite ore involes the roasting...

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  15. Assertion: Silica is added as a flux in reverberatory furnace, in the ...

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  16. Statement-I : Wolframite impurities are separated from cassiterite by ...

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  17. Assertion: Wrough iron is prepared from cast iron by oxidising impurit...

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