Among statements (a) - (d), the correct ones are:

(a) Lime stone is decomposed to $C a O$ during the extraction of iron from its oxides.

(b) In the extraction of silver, silver is extracted as an anionic complex.

(c) Nickel is purified by Mond's process.

(d) Zr and Ti are purified by Van Arkel method.

Option 1 - (a), (b), (c) and (d)

Option 2 - (c) and (d) only

Option 3 - (a), (c) and (d) only

Option 4 - (b), (c) and (d) only

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Alok Kumar Singh | Contributor-Level 10

8 months ago

Correct Option - 1

Detailed Solution:

(a) In extraction of iron lime stone is added on a flux

$\begin{array}{r} {C a C O}_{3} ? C a O + {C O}_{2} \\ {C O}_{2} + {S i O}_{2} ? {C a S i O}_{3} \end{array}$

(b) Extraction of silver

$A g + N a C N ? {[\begin{array}{l} anionic complex \\ A g (C N)_{2} \end{array}]}^{-}$

(c) Nickel is purified by Mond's process

(d) $Z r$ and $T i$ are purified by Van Arkel method by converting to volatile iodide.

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Among statements (a) - (d), the correct ones are: (a) Lime stone is decomposed to CaO during the extraction of iron from its oxides. (b) In the extraction of silver, silver is extracted as an anionic complex. (c) Nickel is purified by Mond's process. (d) Zr and Ti are purified by Van Arkel method.

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