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Microbiology

Microbiology
Coliform bacteria on fermentation of carbohydrates yields

lactic acid
all of these
acetic acid
formic acid

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Microbiology
The agent(s) which can cause plague is/are

All of these
Proteus mirabilis
Yersinia pestis
Pseudomonas aeruginosa

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Microbiology
Group I C. botulinum strains generally includes in

all types of strains (non-proteolytic) E and F
all types of strains (proteolytic)C, D and F
None of these
all types of strains (proteolytic)A, B and F

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Microbiology
The elimination of the scum of yeasts in the brine during the fermentation include

addition of the sorbic acid
agitation of the surface
all of these
addition of the mustard oil

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Microbiology
Too long a fermentation of sauerkraut may favour the growth of

Lactobacillus lactis
none of these
Lactobacillus brevis
Bacillus subtilis

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

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

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