Verified Solution • 2025–26 Session
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QJEEM20Ch3f1e: JEE Main 2020 Chemistry - Class 12 JEEM20Ch3f1e Solution: Among statements (a) - (d), the correct ones are (a) Lime stone …
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.
(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.
Multiple Choice Options
- A (a), (c) and (d) only
- B (c) and (d) only
- C (b), (c) and (d) only
- D (a), (b), (c) and (d)
Step-by-Step Verified Solution
(a) CaCO3
(b) In extraction of silver, silver is extracted as an anionic complex [Ag(CN)2]–.
Ag/Ag2S + CN- [Ag(CN)2] –
(c) Ni is purified by mond's process
Ni + 4CO
Ni(CO)4
(d) Zr and Ti are purified by van arkel method
(b) In extraction of silver, silver is extracted as an anionic complex [Ag(CN)2]–.
Ag/Ag2S + CN- [Ag(CN)2] –
(c) Ni is purified by mond's process
Ni + 4CO
Ni(CO)4
(d) Zr and Ti are purified by van arkel method