1. Which of the following types of Clostridium perfringens produces alpha toxin most abundantly?

A. Type A
B. Type B
C. Type C
D. Type D

2. Which of the following is predominantly proteolytic?

A. C. sporogenes
B. C. histolyticum
C. Both (a) and (b)
D. C. speticum

3. Which of the following properties are the characteristics of tetanospasmin?

A. It is a heat-labile protein
B. It is a neurotoxin
C. It can be toxoided
D. All of these

4. Types of exotoxin, most commonly associated with botulism in man, is/are?

A. Type A
B. Type B
C. Type E
D. All of these

5. Nagler’s reaction is useful for the identification of

A. C tetani
B. C perfringens
C. C botulinum
D. C difficile