Colloidal _________ have a disadvantage that it‚Äö√Ñ√∂‚àö√ë‚àö¬•s hard to reproduce the method from operator to operator without mechanization of the system.$#

Colloidal _________ have a disadvantage that it‚Äö√Ñ√∂‚à

1.	Colloidal _________ have a disadvantage that it‚Äö√Ñ√∂‚àö√ë‚àö¬•s hard to reproduce the method from operator to operator without mechanization of the system.$#
A.	Titration
B.	Sulfonication
C.	Burning
D.	Delignification
Answer» B. Sulfonication