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Which of the following options are correct?

Question

Which of the following options are correct?

A

Cast iron is obtained by remelting pig iron with scrap iron and coke using hot air blast.

B

In extraction of silver, silver is extracted as cationic complex.

C

Nickel is purified by zone refining.

D

Z r

and

T i

are purified by van Arkel methad.

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Text solutionVerified

Cast iron is different from pig iron and is made by melting pig iron with scrap iron and coke using hot air blast.

van Arkel method is used for the refining of

Z r

and

T i

.

The crude metal is heated in an evacuated vessel with iodine. The metal iodide being more covalent, volatilises:

Z r + 2 I_{2} \to Z r I_{4}

The metal iodide is decomposed on a tungsten filament, electrically heated to about

1800 K .

The pure metal is thus deposited on the filament.

Z r I_{4} \to Z r + 2 I_{2}

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Question Text	Which of the following options are correct?
Answer Type	Text solution:1
Upvotes	150