Embibe Experts Solutions for Chapter: Redox Reactions, Exercise 1: AP EAPCET Medical 2021 (6-Sep Forenoon)

Which reaction does not represent auto redox or disproportionation?

The coefficients $x, y$ and $z$ in the given redox reaction are respectively

$x{\mathrm{Cr}}_2{\mathrm{O}}_7^{2-}+y{\mathrm{SO}}_2+z{\mathrm{H}}^{+}\to {\mathrm{Cr}}^{+3}+{\mathrm{SO}}_4^{2-}+{\mathrm{H}}_2\mathrm{O}$

The volume of $0.1{\mathrm{MKMnO}}_4$ solution required to completely react with a solution obtained by dissolving $0.63 \mathrm{g}$ of oxalic acid (molar mass $126{\mathrm{gmol}}^{-1})$ in $50 \mathrm{mL}$ distilled water in acidic medium in $\mathrm{mL}$ is

Identify the correct statements from the following.
i.In ${\left[\mathrm{CoCl}{\left({\mathrm{NH}}_3\right)}_5\right]}^{2+},$ the Lewis acid is ${\mathrm{Co}}^{3+}$
ii. An example for heteroleptic complex is ${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]}^{3+}$
iii. The hybridisation of $Mn$ in ${\left[{\mathrm{MnBr}}_4\right]}^{2-}$ is ${\mathrm{dsp}}^2$
iv. In $\left[\mathrm{Ni}(\mathrm{CO}{)}_4\right],$ the metal-carbon bond possesses $\sigma$ and $\pi$ character.

Calculate normality of the solution obtained by mixing $100 \mathrm{ml}$ of $0.2 \mathrm{M} {\mathrm{H}}_2{\mathrm{SO}}_4$ and $200 \mathrm{ml}$ of $0.1 \mathrm{M} \mathrm{HCl}$ solutions.