Redox Reactions · Chemistry · NEET

The oxidation states not shown by Mn in given reaction is : $$ 3 \mathrm{MnO}_4^{2-}+4 \mathrm{H}^{+} \longrightarrow 2 \mathrm{MnO}_4^{-}+\mathrm{MnO...

Which reaction is NOT a redox reaction?

The correct option for a redox couple is:

On balancing the given redox reaction, $$\mathrm{aCr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{bSO}_{3}^{2-}(\mathrm{aq})+\mathrm{cH}^{+}(\mathrm{aq}) \rightar...

Which of the following reactions is a decomposition redox reaction?

What is the change in oxidation number of carbon in the following reaction?CH4(g) + 4Cl2(g) $$ \to $$ CCl4(l) + 4HCl(g)...

Which of the following reactions are disproportionation reaction? (a) 2Cu+ $$ \to $$ Cu2+ + Cu0 (b) 3MnO42+ + 4H+ $$ \to $$ 2MnO4- + MnO2 + 2H2O (c) ...

For the redox reaction, MnO4– + C2O4 2– + H+ $$ \to $$ Mn2+ + CO2 + H2O The correct coefficients of the reactants for the balanced equation are...

The correct order of N-compounds in its decreasing order of oxidation states is

Hot concentrated sulphate acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?

The pair of compounds that can exist together is

(I)   H2O2 + O3 $$ \to $$ H2O + 2O2 (II)   H2O2 + Ag2O $$ \to $$ 2Ag + H2O + O2 Role of Hydrogen peroxide in the above r...

In acidic medium, H2O2 changes Cr2O72- to CrO5 which has two ($$-$$O$$-$$O$$-$$) bonds. Oxidation state of Cr in CrO5 is ...

When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation...

Oxidation numbers of P in PO$$_4^{3 - }$$, of S in SO$$_4^{2 - }$$ and that of Cr in Cr2O$$_7^{2 - }$$ are respectively

Number of moles of MnO$$_4^{ - }$$ required to oxidize one mole of ferrous oxalate completely in acidic medium will be

Which is the best description of the behaviour of bromine in the reaction given below? H2O + Br2 $$ \to $$ HOBr + HBr

The oxidation states of sulphur in the anions SO3$${_3^{2 - }}$$, S2O$${_4^{2 - }}$$ and S2O$${_6^{2 - }}$$ follow the order ...