History of Microbiology - Mock Test 1

Question 1

Autoclaving is carried at

A) Dry heat B) Atmospheric pressure C) 120oC D) All of these

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Question 2

Treponema pallidum can be best indentified using

A) Fluorescence microscope B) Bright field microscope C) Dark field microscope D) Flourescence microscope

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Question 3

Which of the following method of sterilization has no effect on spores

A) Drying B) Hot air oven C) Autoclave D) None of these

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Question 4

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

A) Freezing B) Pasteurisation C) Chilling D) Frosting

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Question 5

Which of the following induces dimerisation of thymine

A) X-rays B) U.V. rays C) ã-rays D) None of these

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Question 6

Which of the following is ionizing radiation

A) U.V. rays B) IR C) γ-rays D) None of these

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Question 7

Separation of a single bacterial colony is called

A) Isolation B) Separation C) Pure culturing D) All of these

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Question 8

Temperature required for pasteurization is

A) Above 150áµ’C B) Below 100áµ’C C) 110áµ’C D) None of these

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Question 9

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

A) Tetani toxin B) Cholera toxin C) Diophtheria toxin D) Toxoid

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Question 10

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

A) Simple B) Complex C) Defined D) Natural

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