Redox Reactions

Which reaction is NOT a redox reaction?

[NEET 2024]

During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of \(F{e}^{2+}\) ion?

[NEET 2024]

During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of \(F{e}^{2+}\) ion?

[NEET 2024]

Given below are two statements:
Statement-I: In redox titration, the indicators used are sensitive to change in pH of the solution.
Statement-II: In acid-base titration, the indicators used are sensitive to change in oxidation potential.

In the light of the above statements, choose the most appropriate answer from the options given below

[JEE Main 2023, 8 Apr (Shift 2)]

Which of the following reactions is the metal displacement reaction?

Choose the right option:

[NEET 2021]

Assertion (A): \({\mathrm{S}}_{8}\) solid undergoes disproportionation reaction under alkaline conditions to form \({\mathrm{S}}^{2-}\) and \({\mathrm{S}}_{2}{{\mathrm{O}}_{3}}^{2-}\).

Reason (R):\({\mathrm{ClO}}_{4}^{-}\) can undergo disproportionation reaction under acidic condition.

In the light of the above statements, choose the most appropriate answer from the options given below :

[JEE Main 2024, 31 Jan (Shift 2)]

What is the change in oxidation number of carbon in the following reaction?

\( \mathrm{CH}_{4}(\mathrm{~g})+4 \mathrm{Cl}_{2}(\mathrm{~g}) \rightarrow \mathrm{CCl}_{4}(\mathrm{l})+4 \mathrm{HCl}(\mathrm{g}) \)

[NEET 2020]

In Chromyl chloride, the oxidation state of chromium is (+.......................).

[JEE Main 2023, 15 Apr (Shift 1)]

Given below are two statements :
Statement-I: Potassium hydrogen phthalate is a primary standard for standardisation of sodium hydroxide solution.
Statement-II: In this titration phenolphthalein can be used as indicator.
In the light of the above statements, choose the most appropriate answer from the options given below:

Oxidation number of potassium \({K}_{2}O,{K}_{2}{O}_{2}\)and \(K{O}_{2}\) in respectively is

[JEE Main 2020, 7 Jan (Shift 1)]

The exact volumes of \(1MNaOH\) solution required to neutralize \(50mL\text{. of }1M{H}_{3}P{O}_{3}\) solution and 100 mL of \(2M{H}_{3}P{O}_{2}\), solution respectively, are:

[JEE Main 2021, 16 Mar (Shift 2)]

In which one of the following sets all species show disproportionation reaction?

Identify the process in which change in the oxidation state is five:

On balancing the given redox reaction,
\({\mathrm{aCr}}_{2}{\mathrm{O}}_{7}^{2-}+{\mathrm{bSO}}_{3}^{2-}(\mathrm{aq})+{\mathrm{cH}}^{+}(\mathrm{aq})\to 2{\mathrm{aCr}}^{3+}(\mathrm{aq})+{\mathrm{bSO}}_{4}^{2-}(\mathrm{aq})+\frac{\mathrm{c}}{2}{\mathrm{H}}_{2}\mathrm{O}(ℓ)\)
the coefficients \(\mathrm{a}, \mathrm{b}\) and \(\mathrm{c}\) are found to be, respectively

[NEET 2023]

The incorrect oxidation number of the underlined atom in the following species is

[Re-NEET 2020]