Reaction of soluble antigen with antibody is known as -: (A) Agglutination, (B) Precipitation, (C) Flocculation, (D) Complement fixation
Answer is B. When a soluble antigen combines with its antibody in the presence of electrolytes at a suitable temperature and pH, the antigen-antibody complex form an insoluble precipitate. This is called precipitation reactions. Reference:Anathanarayan & paniker's 9th edition, pg no: 105 <\p>