In $\mathrm{Kjeldahl}$ 's method, $\mathrm{CuSO}_{4}$ acts as
In $\mathrm{Kjeldahl}$ 's method, $\mathrm{CuSO}_{4}$ acts as
oxidising agent
reducing agent
hydrolysing agent
catalytic agent
Solution
$\mathrm{Kjeldahl's}$ method depends upon the fact that most of the organic compounds containing nitrogen are quantitatively decomposed to give $\left(\mathrm{NH}_{4}ight)_{2} \mathrm{SO}_{4}$ when heated strongly with conc. $\mathrm{H}_{2} \mathrm{SO}_{4} .$ In this method $\mathrm{CuSO}_{4}$ acts as catalytic agent.