Which of the following is a flocculation test ?
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.
Widal test
Weil- felix test
VDRL
Paul- Bunnel test