<prompt> Which of the following is a flocculation test ?Widal testWeil- felix testVDRLPaul- Bunnel test  <response>: Ans. is c i.e., VDRL When instead of sedimenting, the precipitate remains suspended asfloccules, the reaction is known as flocculation instead of precipitation Examples - VDRL slide flocculation test and Kahn tube flocculation test for syphilis. 