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Microbiology

Microbiology
Coliform bacteria on fermentation of carbohydrates yields

formic acid
acetic acid
lactic acid
all of these

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Microbiology
Arrange the potencies of toxin in descending order of the following canned foods

corn> string bean>peas>spinach
corn> peas>string beans>spinach
peas>string beans>spinach> corn
corn> spinach> peas>string beans

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

173 Rad
73 Rad
73 Gy
7.3 Mrad

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

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

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Microbiology
In Widal test, the significant titre for O agglutinins is generally

1:50 or more
1:2.00 or more
1:100 or more
1:150 or more

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Microbiology
The staphylococcal intoxication refers to presence of

All of these
an enterotoxin
neurotoxin
mycotoxin

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