d- and f-Block Elements · JEE Advanced previous year questions

One of the products formed from the reaction of permanganate ion with iodide ion in neutral aqueous medium is

1. A.${\mathrm{I}}_2$
2. B.$\mathrm{I}{\mathrm{O}}_3^{-}$
3. C.$\mathrm{I}{\mathrm{O}}_4^{-}$
4. D.$\mathrm{I}{\mathrm{O}}_2^{-}$

The sum of the spin only magnetic moment values (in B.M.) of $[\mathrm{Mn}(\mathrm{Br}{)}_6{]}^{3-}$ and $[\mathrm{Mn}(\mathrm{CN}{)}_6{]}^{3-}$ is _________.

1. A.P-2, Q-3, R-4, S-5
2. B.P-2, Q-3, R-5, S-1
3. C.P-3, Q-5, R-4, S-1
4. D.P-3, Q-2, R-5, S-4

The correct statement(s) related to processes involved in the extraction of metals is(are)

1. A.Roasting of Malachite produces Cuprite.
2. B.Calcination of Calamine produces Zincite.
3. C.Copper pyrites is heated with silica in a reverberatory furnace to remove iron.
4. D.Impure silver is treated with aqueous $\mathrm{KCN}$ in the presence of oxygen followed by reduction with zinc metal.