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Microbiology

Microbiology
Soft pickles are made so by pectolytic enzymes mostly from

bacteria
moulds
none of these
yeasts

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Microbiology
Which of the following media is selective for Salmonella?

Thiosulphate citrate bile salt agar
Bile salt agar
All of these
Wilson and Blair's brilliant-green bismuth sulphite agar medium

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Microbiology
Species of Shigella which is predominant in India is

S dysenteriae
S boydii
S flexneri
S sonnei

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Microbiology
Abnormal fermentation of cabbage may result in a cheese like odour caused by

propionic acid
caprioc acid and Valeric acid
all of these
butyric acid

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

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

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Microbiology
Slippery pickles occur due to

growth of encapsulated bacteria
both (a) and (b)
broken scums of film yeasts on the surface of brine
addition of high amount of salt

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