Oxidation and Reduction

The standard reduction potentials at 298 K for the following half reactions are given against each:
$\begin{array}{l}{\mathrm{Zn}}^{2+}\left(\mathrm{aq}\right)+2\mathrm{e}\stackrel{}{\rightleftharpoons }\mathrm{Zn}\left(\mathrm{s}\right) ;-0.762\\ {\mathrm{Cr}}^{3+}\left(\mathrm{aq}\right)+3\mathrm{e}\stackrel{}{\rightleftharpoons }\mathrm{Cr}\left(\mathrm{s}\right) ; -0.740\\ 2{\mathrm{H}}^{+}\left(\mathrm{aq}\right)+2\mathrm{e}\stackrel{}{\rightleftharpoons }{\mathrm{H}}_2\left(\mathrm{g}\right) ; 0.000\\ {\mathrm{Fe}}^{3+}\left(\mathrm{aq}\right)+\mathrm{e}\stackrel{}{\rightleftharpoons }{\mathrm{Fe}}^{2+}\left(\mathrm{aq}\right) ; 0.770\end{array}$
Which is the strongest reducing agent?

Which of the following reactions is possible at the anode?

Given below are two statements :
Statement I : ${\mathrm{H}}_2{\mathrm{O}}_2$ is used in the synthesis of Cephalosporin
Statement II : ${\mathrm{H}}_2{\mathrm{O}}_2$ is used for the restoration of aerobic conditions to sewage wastes.
In the light of the above statements, choose the most appropriate answer from the options given below :

Which of the following will act as both oxidising and reducing agent?

Which of the following is a redox reaction?

A compound '$\mathrm{X}$' is a weak acid and it exhibits colour change at $\mathrm{pH}$ close to the equivalence point during neutralization of $\mathrm{NaOH}$ with ${\mathrm{CH}}_3\mathrm{COOH}$. Compound '$\mathrm{X}$' exists in ionized form in basic medium. The compound '$\mathrm{X}$' is

The Plot of $\mathrm{pH}$-metric titration of weak base ${\mathrm{NH}}_4\mathrm{OH}$ vs strong acid $\mathrm{HCl}$ looks like

Among the following, identify the correct statement.

Write a reaction for the classical concept of the reduction.

Define reduction based on the classical concept.

The addition of the electropositive element is known as 

Define reduction in classical way.

In which of the following reactions does the underlined species get oxidised?

Which of the following reactions involve both oxidation and reduction?

In the reaction: $2\mathrm{Na} + {\mathrm{Cl}}_2 \stackrel{}{\to } 2\mathrm{NaCl},$

Which of the following halogen oxides is used for the estimation of carbon monoxide in automobile exhaust gases?

When ${\mathrm{KMnO}}_4$ solution is added to oxalic acid solution, the decolourisation is slow in the beginning but becomes instantaneous after some time. This is because-

Standard reduction potential of silver and nickel are:

${\mathrm{E}}_{{\mathrm{Ag}}^{+}/\mathrm{Ag}}^0=0.8 \mathrm{V}$ and ${\mathrm{E}}_{{\mathrm{Ni}}^{2+}/\mathrm{Ni}}^0=-0.23 \mathrm{V}$

Which of the following statement is true?

Which of the following can act as oxidising as well as reducing agent depending on acidic and basic medium.