Redox Reaction

Which among the following is the correct arrangement of halogens in the increasing order of their oxidizing nature?

Choose the correct statements about the given chemical reaction.

$3\mathrm{Fe}\left(\mathrm{s}\right)+4{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right) \to {\mathrm{Fe}}_3{\mathrm{O}}_4\left(\mathrm{s}\right)+4{\mathrm{H}}_2\left(\mathrm{g}\right)$

a. Iron is getting oxidised.

b. Water is getting reduced.

c. Water is acting as a reducing agent.

d. Water is acting as an oxidising agent

A substance that oxidises itself and reduces other is-

In which reaction the addition and removal of oxygen take place simultaneously?

In the reaction $3{\mathrm{MnO}}_2+4\mathrm{Al} \stackrel{}{\to } 3\mathrm{Mn}+2{\mathrm{Al}}_2{\mathrm{O}}_3$ the oxidising agent is:

In the equation $\mathrm{CuO}+{\mathrm{H}}_2\to \mathrm{Cu}+{\mathrm{H}}_2\mathrm{O}$, the substance reduced is 

Excess of $\mathrm{KI}$ reacts with ${\mathrm{CuSO}}_4$ solution and then ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ solution is added to it. Which of the following statements is incorrect? 

Which of the following reaction is not a redox reaction ?

Which statements are correct regarding the following reaction? 

$2\mathrm{PbO}\left(\mathrm{s}\right)+\mathrm{C}\left(\mathrm{s}\right)\to 2\mathrm{Pb}\left(\mathrm{s}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)$

(i) Lead is reduced (ii) Carbon dioxide is oxidised

(iii) Carbon is oxidised (iv) Lead oxide is reduced

Identify the correct oxidant and reductant in the following reaction

$\mathrm{PbS}+4{\mathrm{H}}_2{\mathrm{O}}_2 \stackrel{}{\to }{\mathrm{PbSO}}_4+4{\mathrm{H}}_2\mathrm{O}$

A dilute ferrous sulphate solution was generally added to the beaker containing acidified ${\mathrm{KMnO}}_4$ solution. The light purple color of the solution fades and finally disappears.

Which of the following is the correct explanation for the observation?

Which of the following is a redox reaction but not the combination reaction?

The aerial oxidation of food stuff containing fats or oils produced bad smell. This is called

When the copper powder is heated, it turns $—$ due to the formation of copper oxide.

When lead nitrate is heated in a dry test tube brown fumes are evolved due to the formation of 

What happens when a copper rod is dipped in the iron sulphate solution?

(i) Copper displaces iron

(ii) Blue colour of copper sulphate solution is obtained

(iii) No reaction takes place

The correct statements are

Codes:

A dilute ferrous sulphate solution was generally added to the beaker containing acidified ${\mathrm{KMnO}}_4$ solution. The light purple color of the solution fades and finally disappears.

Which of the following is the correct explanation for the observation?

The following reaction is an example of

$4{\mathrm{NH}}_3$(g)$+5{\mathrm{O}}_2$(g)$\to 4\mathrm{NO}$(g)$+6{\mathrm{H}}_2\mathrm{O}$(g)

(i) displacement reaction

(ii) combination reaction

(iii) redox reaction

(iv) neutralisation reaction

A reaction in which both oxidation and reduction take place simultaneously, is known as:

When ethanol is heated with alkaline potassium permanganate solution, it gets converted into ethanoic acid. In this reaction, alkaline potassium permanganate acts as: