In Kjeldahl's method of estimation of `N,CuDO_(4)` acts as

In Kjeldahl's method of estimation of nitrogen, K_2SO_4 acts as:

In Kjeldahl's method of estimation of nitrogen, K_(2)SO_(4) acts as:

In Kjeldahl's method of estimation of nitrogen K_(2)SO_(4) acts as:

In Kjeldahl's method of estimation of nitrogen, nitrogen is quantitatively converted to ammonium sulphate. It is then treated with standard solution of alkli. The nitrogen which is present is estimated as

In kjeldahl's method of estimation of nitrogen, copper sulphate acts as :

Kjeldahl's method is used in the estimation of

Kjeldahl's method is used in the estimation of