Prof. Anil Thomas and Prof. Santosh Yadav Solutions for Chapter: Redox Reactions, Exercise 2: Critical Thinking

In the following reaction
${\mathrm{Cr}}_2{\mathrm{O}}_7^{2-}+ 14{\mathrm{H}}^{+} + 6\mathrm{I}¯ \underset{}{\overset{}{\to }} 2{\mathrm{Cr}}^{3+} +7{\mathrm{H}}_2\mathrm{O} + 3{\mathrm{I}}_2.$
Which element gets reduced?

${\mathrm{C}}_2{\mathrm{H}}_{6 \left(\mathrm{g}\right)}+ {\mathrm{nO}}_2\underset{}{\overset{}{\to }} {\mathrm{CO}}_{2 \left(\mathrm{g}\right)}+ {\mathrm{H}}_2{\mathrm{O}}_{ \left(\mathrm{l}\right)}$
In this equation, the ratio of the coefficients of ${\mathrm{CO}}_2$ and ${\mathrm{H}}_2\mathrm{O}$ is:

_________is used as an oxidising agent to bleach dark hair by a redox reaction.

Which of the following CORRECTLY represents the reactions occurring in Daniel cell?

The overall effect of respiration is similar to that of _____.

The violent reaction between sodium and water is an example of:

Hydrogen acts as an oxidising agent, when it is reacted with:

Which of the following is a redox reaction?