Question

Match List I with List II

	List I-Antigen‐ antibody reaction types		List II-Application
A	Precipitin test	I	Screening for Rubella and Type2 Herpes viruses
B	Agglutination (Haemagglutination)	II	Streptococcal differentiation into serological groups
C	Complement Fixation reaction	III	Serological diagnosis of influenza & mumps viruses
D	ELISA	IV	Treponema pallidum identification
E	-	V	Mycobacterium identification

Choose the correct answer from the options given below:

• A. A ‐III , B ‐V , C ‐II, D ‐I
• B. A ‐II , B ‐IV , C ‐I , D ‐III
• C. A ‐IV , B ‐II , C ‐III , D ‐I
• D. A ‐I , B ‐III , C ‐II , D ‐IV

Answer 1

The Correct Option is B

The question requires matching different antigen-antibody reaction types with their respective applications. Let's analyze each reaction type and application to determine the correct matches:

1. Precipitin Test: This test is used for the identification and quantification of antibody or antigen in a sample. It is often used to differentiate Streptococcal into serological groups.
2. Agglutination (Haemagglutination): This reaction involves the clumping of antigens and antibodies. It is commonly utilized for identifying specific microorganisms, such as Treponema pallidum, the causative agent of syphilis.
3. Complement Fixation Reaction: This test is primarily used for the serological diagnosis of certain viral infections such as influenza and mumps viruses. The presence of specific antibodies indicates a positive result when the complement is fixed to the antigen-antibody complex.
4. ELISA (Enzyme-Linked Immunosorbent Assay): This is a versatile test for detecting and quantifying substances such as proteins, peptides, antibodies, and hormones. ELISA is often used in the screening of viruses like Rubella and Type 2 Herpes.

Based on the explanations above, the correct matches are:

• A - Precipitin test: II - Streptococcal differentiation into serological groups
• B - Agglutination (Haemagglutination): IV - Treponema pallidum identification
• C - Complement Fixation Reaction: I - Serological diagnosis of influenza & mumps viruses
• D - ELISA: III - Screening for Rubella and Type 2 Herpes viruses

Thus, the correct answer is: A ‐II , B ‐IV , C ‐I , D ‐III.