Microbiology MCQ (Quiz-1)  

Sterilization of culture media

Multiple choice questions with answer key

S. Y. B. PHARM Sem - III  (UNIT - 3)  

AS PER PCI SYLLABUS






1. The medium used in membrane filter technique was
      A) Lactose broth


... Answer is : D) EMR-Vp medium


2. Lysol is a




... Answer is : A) Disinfectant

3. Which of the following is a neutral stain?





... Answer is : B) Neutral red

4. Peptone water medium is an example for




... Answer is : A) Semisynthetic medium


5. The technique used to avoid all microorganisms is accomplished by




... Answer is : C) Sterilization

6. A culture medium the exact composition of which is not known was called as .




... Answer is : C) Simple

7. Temperature required for pasteurization is




... Answer is : A) Below 100 oC

8. Which of the following is ionizing radiation?





... Answer is : C) γ-rays


9. When food material are preserved at a temperature just above freezing temperature, the process is called.





... Answer is : A) Chilling

10. Treponema pallidum can be best identified using




... Answer is : D) Bright field microscope

11. Temperature in pasteurization is




... Answer is : C) 62.8 oC


12. Algae are rich in




... Answer is : D) All of these

13. The method in which the cells are frozen dehydrated is called




... Answer is : C) Lypophilization


14. Thermal death time is




... Answer is : A) Temperature that kills all cells in a given time

15. Elek’s gel diffusion test is used for the detection of




... Answer is : D) Diophtheria toxin


16.Separation of a single bacterial colony is called




... Answer is : D) Isolation

17.Which of the following induces dimerisation of thymine?




... Answer is : A) U.V. rays


18. Which of the following method of sterilization has no effect on spores?




... Answer is : C) Drying

19. Autoclaving is carried at




... Answer is : A) 120 oC


20. The bacterial culture prepared by pure culture method is




... Answer is : A) Inoculum