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In the alumino-thermite process, Al meta...

In the alumino-thermite process, Al metal acts as :

A

Oxidising agent

B

Reducing agent

C

Catalyst

D

Flux

Text Solution

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The correct Answer is:
B
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In the alumino-thermite process, Al acts as :

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Statement - 1 : Al is used as a reducing agent in aluminothermite process. And Statement - 2 : Al has a lower melting point than Fe, Cr and Mn.

Statement - 1 : In aluminothermic process, Al reduction increases the heat of the reaction. And Statement - 2 : During reduction, Al_(2)O_(3) is formed which is an exothermic process.

From the following flowsheet for the extraction of pure metal, answer the given questions. (v) Reduction of oxides to elements with carbon generally takes place at high temperature, hence Al is used in aluminothermite process. It is because :

The substance used in the thermite process of reducing metal ores is

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In the thermite process, _____is used as a reducting agent.

In Goldschmidt's aluminothermite process, thermite mixture contains ______ parts of Fe_(2)O_(3) and one part of aluminium.

How many metals are commercially reduced by Goldschmidt's aluminothermic process from the given metals ? Na, Pb, Al, Mn, Sn .

VK JAISWAL ENGLISH-METALLURGY-ASSERTION-REASON TYPE QUESTIONS
  1. In the alumino-thermite process, Al metal acts as :

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  2. Assertion : PbSiF(6)+H(2)SiF(6)+ gelatine is taken as electrolyte in e...

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  3. Assertion : Nitriding is the process of heating steel in presence of N...

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  4. Assertion : Ores are generally converted into oxides, prior to reducti...

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  5. Assertion : In the extraction of Ag, complex Na[Ag(CN)(2)] is reacted ...

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  6. Assertion : Thermite mixture Fe(2)O(3) +Al (powder) is used in the wel...

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  7. Assertion : In froth floatation process sodium ethyl xanthate is used ...

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  8. Assertion : Cryolite is used in electrolytic extraction of Al from alu...

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  9. Assertion: CuFeS(2) is concentrated by froath floatation method Reas...

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  10. Assertion : In the electrolytic reduction of Al(2)O(3), cryolite is us...

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  11. Assertion : Wrought iron is more malleable and ductile than steel. R...

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  12. Assertion : Lead, tin and bismuth are purified by liquation method. ...

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  13. Assertion : Al(2)O(3) is converted into Al by reduction with carbon at...

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  14. Assertion : Reduction of ZnO with carbon is done at 1100^(@)C. Reaso...

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  15. Assertion : Desilverisation of lead is done by Parke's method DeltaG. ...

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  16. Statement-I : All the ores are mineral Statement-II : Most of the or...

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  17. Assertion : PbSiF(6)+H(2)SiF(6)+ gelatine is taken as electrolyte in e...

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  18. Assertion : Nitriding is the process of heating steel in presence of N...

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  19. Assertion : Ores are generally converted into oxides, prior to reducti...

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  20. Assertion : In the extraction of Ag, complex Na[Ag(CN)(2)] is reacted ...

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  21. Assertion : Thermite mixture Fe(2)O(3) +Al (powder) is used in the wel...

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