1. VDRL test is an example of
A. Tube test
B. Ring test
C. Slide test
D. none of these
2. Weil-Felix reaction is based on the sharing of antigens between
A. sheep RBCs and EB virus
B. mycoplasma and human O group RBCs
C. rickettsial antigens and antigens of certain strains of Proteus
D. none of these
3. Agglutination reaction is more sensitive than precipitation for the detection of
A. antigens
B. antibodies
C. complement
D. antigen-antibody complexes
4. A precipitation reaction is relatively less sensitive for the detection of
A. antigens
B. antigen-antibody complexes
C. antibodies
D. complement
5. In which of the following case a large lattice is formed?
A. Antibody is in excess
B. Antigens and antibodies are in optimal proportion
C. Antigen is in excess
D. None of these