Among statements (a) - (d), the correct ones are [JEE Main-2020 (Se...

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Among statements (a) - (d), the correct ones are
[JEE Main-2020 (September)]
\( \mathrm{P} \)
(a) Lime stone is decomposed to \( \mathrm{CaO} \) during the
W 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) \( \mathrm{Zr} \) and \( \mathrm{Ti} \) are purified by Van Arkel method.
(1) (a), (c) and (d) only
(2) (c) and (d) only
(3) (b), (c) and (d) only
(4) (a), (b), (c) and (d)
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