In Kjeldahls method, \( \mathrm{CuSO}_{4} \) acts as- (a) Oxidising agent (b) Catalytic agent (c...

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In Kjeldahls method, \( \mathrm{CuSO}_{4} \) acts as-
(a) Oxidising agent
(b) Catalytic agent
(c) Reducing agent
(d) Hydrolysing agent
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