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Assertion (A) Nickel can be purified by ...

Assertion (A) Nickel can be purified by Mond's process.
Reason ( R) `Ni(CO)_(4)` is a volatile compound which decomposes at 460 K to give pure Ni,

A

Both assertion and reason are true and reason is the correct explanation of asserton.

B

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

C

Assertion is true but reason is false

D

Assertion is flase but reason is true

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Assertion : Nickel can be purified by Mond process. Reason : Ni(CO)_(4) is a volatile compound which deomposed at 460K to give pure Ni .

Assertion : Ti can be purified by Van Arkel process. Reason: TiI_(4) is a volatile compound which decomposes at a high temperature.

Assertion : Zirconium can be purificed by Van Arkel method. Reason : ZrI_(4) is volatile and decomposed at 1800 K .

Assertion: Nickel is purified by reaction it with CO . Reason: Impurities present in nickel form volatile compounds.

Assertion: Nickel is purified by reaction it with CO . Reason: Impurities present in nickel form volatile compounds.

In which of the following method of purification metal is converted to its volatile compound which is decomposed to give pure metal?

A: [Ni(CO)_(4)] is organometallic compound. R: CO is organic and Ni is metal.

An element X burns in nitrogen to give a compound Y which on reaction with water gives a compound Z and a gas with a pungent smell. Z can be used during construction and white washing. When excess of CO_(2) is bubbled through Z, a compound P is formed which on heeating decomposes to give a compourless, odourless gas. identify X, Y, Z and P.

Assertion The number of unpaired electrons in [Ni(CO)_(4)] is zero Reason In this compounds 4s-electrons of Ni atom enter the inner d-orbitals to facilitate the sp^(3) hybridisation in Ni atom .

Assertion : [Ni(CO)_4] is a diamagnetic complex. Reason : All the electrons in the complex are paired

ALLEN-METALLURGY-EXERCISE -04
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  2. Sulphdies ores are converted to oxides before reduction . This is expl...

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  3. Which method is used for refining Zr and Ti ? Explain with equation.

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  4. What should be the considering during the extraction of metal by elect...

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  5. What is the role of flux in metallurgical processes?

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  6. How are metals used as semiconductors refined ? What is the principle ...

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  7. Write down the reaction taking place in blast furnance related to the ...

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  8. Give two requirements for vapour phase refining.

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  9. Write the chemical reactions involved in the process of extraction of ...

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  10. Match the items of column I with items of column II and assign the cor...

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  11. Match the items of Column I with the items of Column II and assign the...

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  12. Match items of Column I with the items of Column II and assign the co...

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  13. Match the items of Column I with the items of Column II and assign t...

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  14. Match the items of Column I with items of Column II and assign the cor...

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  15. Assertion (A) Nickel can be purified by Mond's process. Reason ( R) ...

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  16. Assertion (A) Zirconium can be purified by van Arkel method. Reason...

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  17. Assertion (A) Sulphide ores are concentrated by froth floatation metho...

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  18. Assertion (A) Zone refining method is verty useful for producing semic...

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  19. Assertion (A) Hydrometallurgy involves dissolving the ore in a suitabl...

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  20. Explain the following (a) CO(2) is a better reducing agent below 7...

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