Amongst the following Kjeldahl's method can't be used for I. \( \mathrm{PhNO}_{2} \) II. \( \mat....

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Amongst the following Kjeldahl's method can't be used for
\( \mathrm{P} \)
I. \( \mathrm{PhNO}_{2} \)
II. \( \mathrm{Ph}-\mathrm{N}=\mathrm{N}-\mathrm{Ph} \)
III. \( \mathrm{PhNHCOpH} \)
IV.
V.
VI.
VII. \( \mathrm{PhNH}_{2} \)
VIII. Acetone
IX. Ethane nitrile
X. Urea


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