Question

Match List-I with List-II: 

List-I (Scientists)		List-II (Contribution)
(A)	Robert Koch	(IV)	Pure Culture Technique
(B)	Paul Ehrlich	(I)	Concept of Chemotherapy
(C)	Sergei N. Winogradsky	(II)	Nitrogen Fixing Bacteria in Soil
(D)	Jules Bordet	(III)	Complement Fixation Reaction

• A. \(A\text{-III},\ B\text{-I},\ C\text{-IV},\ D\text{-II}\)
• B. \(A\text{-IV},\ B\text{-I},\ C\text{-II},\ D\text{-III}\)
• C. \(A\text{-III},\ B\text{-IV},\ C\text{-I},\ D\text{-II}\)
• D. \(A\text{-II},\ B\text{-III},\ C\text{-IV},\ D\text{-I}\)

Hint:

Remember:
• Robert Koch \(\rightarrow\) Pure culture technique
• Paul Ehrlich \(\rightarrow\) Chemotherapy
• Winogradsky \(\rightarrow\) Soil microbiology
• Jules Bordet \(\rightarrow\) Complement fixation

Answer 1

The Correct Option is B

Concept: Several pioneering microbiologists made landmark contributions that laid the foundation of microbiology, immunology, and medical science.

Step 1: Matching Robert Koch. Robert Koch developed: \[ \text{Pure culture technique} \] and established Koch’s postulates for disease causation. Thus: \[ A \rightarrow IV \]

Step 2: Matching Paul Ehrlich. Paul Ehrlich introduced the: \[ \text{Concept of chemotherapy} \] and developed the idea of “magic bullets”. Thus: \[ B \rightarrow I \]

Step 3: Matching Sergei N. Winogradsky. Winogradsky discovered important soil microorganisms including: \[ \text{Nitrogen-fixing bacteria} \] and contributed greatly to soil microbiology. Thus: \[ C \rightarrow II \]

Step 4: Matching Jules Bordet. Jules Bordet is known for work on: \[ \text{Complement fixation reaction} \] which became important in immunology and serological testing. Thus: \[ D \rightarrow III \]

Step 5: Determining the correct combination. Therefore: \[ \boxed{ A\text{-IV},\ B\text{-I},\ C\text{-II},\ D\text{-III} } \] Hence, the correct answer is: \[ \boxed{(B)\ A\text{-IV},\ B\text{-I},\ C\text{-II},\ D\text{-III}} \]