Types of Redox Reactions

Which of the following options are correct for the reaction?

$2{\left[\mathrm{Au}(\mathrm{CN}{)}_2\right]}^{-}\left(\mathrm{aq}\right)+\mathrm{Zn}\left(\mathrm{s}\right)\to 2\mathrm{Au}\left(\mathrm{s}\right)+{\left[\mathrm{Zn}(\mathrm{CN}{)}_4\right]}^{2-}\left(\mathrm{aq}\right)$

A. Redox reaction

B. Displacement reaction

C. Decomposition reaction

D. Combination reaction

Choose the correct answer from the options given below:

Soluble salt like sodium sulphite can be prepared in the laboratory by the process of:

Which one of the following is an example of disproportionation reaction?

Which of the following represents disproportionation of potassium chlorate?

Which species among the following doesn't show disproportionation reactions?

Choose the disproportionation reaction among the following redox reactions.

 Consider the following redox reactions given below:

I. ${\mathrm{NH}}_4{\mathrm{NO}}_3\stackrel{\mathrm{\Delta }}{\to }\mathrm{ }{\mathrm{N}}_2\mathrm{O}+2{\mathrm{H}}_2\mathrm{O}$

II. ${\mathrm{NH}}_4{\mathrm{NO}}_2\stackrel{\mathrm{\Delta }}{\to }{\mathrm{N}}_2+2{\mathrm{H}}_2\mathrm{O}$

III. ${\mathrm{PCl}}_5\stackrel{\mathrm{\Delta }}{\to }\mathrm{ }{\mathrm{PCl}}_3+{\mathrm{Cl}}_2$

Which of the above is/are not disproportionation reaction?

In the reaction

$3{\mathrm{Cl}}_2+6\mathrm{NaOH}⟶{\mathrm{NaClO}}_3+5\mathrm{NaCl}+3{\mathrm{H}}_2\mathrm{O}$

 The element which loses as well as gains electron is:

Match List-I with the List-II

List-I              List-II
Reaction        Type of redox reaction

$$\begin{gathered} \left(\mathrm{A}\right) {\mathrm{N}}_{2\left(\mathrm{g}\right) }+ \mathrm{O}2\left(\mathrm{g}\right) \to 2{\mathrm{NO}}_{\left(\mathrm{g}\right) }\left(\mathrm{I}\right) \mathrm{Decomposition} \\ \left(\mathrm{B}\right) 2\mathrm{Pb}({\mathrm{NO}}_3{)}_{2\left(\mathrm{s}\right)} (\mathrm{II}) \mathrm{Displacement} \\ \to 2\mathrm{PbO}(\mathrm{s}) + 4\mathrm{NO}2(\mathrm{g}) + \mathrm{O}2(\mathrm{g}\left) \\ \right(\mathrm{C}) 2{\mathrm{Na}}_{\left(\mathrm{s}\right)} + 2{\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{l}\right)} (\mathrm{III}) \mathrm{Disproportionation} \\ \to 2{\mathrm{NaOH}}_{(\mathrm{aq}.)} + {{\mathrm{H}}_2}_{\left(\mathrm{g}\right)} \\ (\mathrm{D}) 2{\mathrm{NO}}_{2\left(\mathrm{g}\right) }+ 2^{–}{\mathrm{OH}}_{(\mathrm{aq}.) \left(\mathrm{IV}\right) \mathrm{Combination}} \\ \to {\mathrm{NO}}_{2(\mathrm{aq}.) }+ {{\mathrm{NO}}^{-}}_{3(\mathrm{aq}.) }+{\mathrm{H}}_2{\mathrm{O}}_{ \left(\mathrm{I}\right)} \end{gathered}$$

Choose the correct answer from the options given below:

Which of the following reactions are disproportionation reactions?

$\left(1\right) {\mathrm{Cu}}^{+}\to {\mathrm{Cu}}^{2+}+\mathrm{Cu}$

$\left(2\right)3{\mathrm{MnO}}_4^{2-}+4{\mathrm{H}}^{+}\to 2{\mathrm{MnO}}_4^{-}+{\mathrm{MnO}}_2+2{\mathrm{H}}_2\mathrm{O}$

$\left(3\right) 2{\mathrm{KMnO}}_4\to {\mathrm{K}}_2{\mathrm{MnO}}_4+{\mathrm{MnO}}_2+{\mathrm{O}}_2$

$\left(4\right) 2{\mathrm{MnO}}_4^{-}+3{\mathrm{Mn}}^{2+}+2{\mathrm{H}}_2\mathrm{O}\to 5{\mathrm{MnO}}_2+4{\mathrm{H}}^{+}$

Choose the correct answer from the options given below:

Given below are two statements :

Statement I: ${\mathrm{S}}_8$ solid undergoes disproportionation reaction under alkaline conditions to form ${\mathrm{S}}^{2-}$ and ${\mathrm{S}}_2{\mathrm{O}}_3^{2-}$

Statement II: ${\mathrm{ClO}}_4^{-}$ can undergo disproportionation reaction under acidic condition.

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

Total number of species from the following which can undergo disproportionation reaction ___________.
${\mathrm{H}}_2{\mathrm{O}}_2,{\mathrm{ClO}}_3^{-},{\mathrm{P}}_4,{\mathrm{Cl}}_2,\mathrm{Ag},{\mathrm{Cu}}^{+1}, {\mathrm{F}}_2,{\mathrm{NO}}_2, {\mathrm{K}}^{+}$

Which of the following statements is not correct about rusting of iron?

Which of the following is a disproportionation reaction?

$$\begin{gathered} 1.{\mathrm{Cu}}^{+}\to {\mathrm{Cu}}^{2+}+\mathrm{Cu} \\ 2. {\mathrm{MnO}}_4^{2-}\to {\mathrm{MnO}}_4^{-}+{\mathrm{MnO}}_2 \\ 3. {\mathrm{H}}_2{\mathrm{O}}_2\to {\mathrm{O}}_2+{\mathrm{H}}_2\mathrm{O} \\ 4. {\mathrm{CrO}}_4^{2-}\to {\mathrm{Cr}}^{3+}+{\mathrm{H}}_2\mathrm{O} \end{gathered}$$

Statement 1: ${\mathrm{S}}_8$ disproportionates into ${\mathrm{S}}_2{{\mathrm{O}}_3}^{2-}$ and ${\mathrm{S}}^{2-}$ in alkaline medium.

Statement 2: ${\mathrm{ClO}}_4^{-}$ undergoes disproportionation in acidic medium.

How many of the following shows disproportionation reaction?

${\mathrm{H}}_2{\mathrm{O}}_2, \mathrm{Ag}, {\mathrm{Cu}}^{+}, {\mathrm{K}}^{+}, {\mathrm{F}}_2, {\mathrm{Cl}}_2,{\mathrm{ClO}}_4^{-}$

Cotyledons are also called-

The products formed by the disproportionation reaction of  $\mathrm{M}\mathrm{n}{\mathrm{O}}_4^{2-}$ ($1$ mole) in neutral aqueous medium contains

Which does not undergo comproportionation reaction?