• # question_answer In kjeldahl?s method, $CuS{{O}_{4}}$ acts as [AFMC 2001] A) Oxidising agent B) Reducing agent C) Hydrolysing agent D) Catalytic agent

Solution :

Kjeldahl?s method depends upon the fact that most of the organic compounds containing nitrogen are quantitatively decomposed to give ${{(N{{H}_{4}})}_{2}}S{{O}_{4}}$when heated strongly with conc. ${{H}_{2}}S{{O}_{4}}$. In this method $CuS{{O}_{4}}$ acts as catalytic agent.

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