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Microbiology

Microbiology
The application of Gamma rays destroys botulism toxin. The dose of gamma rays required for this purpose is

73 Gy
73 Rad
7.3 Mrad
173 Rad

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Microbiology
Selective media for the isolation of Shigella is

Xylose lysine deoxycholate agar
Hektoen enteric agar
All of these
Salmonella-Shigella agar

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Microbiology
Black kraut is caused by

the micro-organisms
the combined actions of plant enzymes and micro-organisms
the plant enzymes
None of these

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Microbiology
Cloudiness of brine of glass-packed olives may be caused by

salt-tolerant bacteria
All of these
film yeasts or moulds if air is available
the lactics if fermentation of residual sugar resumes

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Microbiology
Which of the following gram-negative bacteria is/are not aerobic?

Escherichia
Pseudomonas
None of these
Neisseria

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Microbiology
Hollow pickles are obtained as a result of

loose packing in the vat
too strong or too weak brine
both (a) and (b)
none of these

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