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Microbiology

Microbiology
Soft pickles are made so by pectolytic enzymes mostly from

none of these
yeasts
moulds
bacteria

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

7.3 Mrad
73 Gy
73 Rad
173 Rad

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Microbiology
Which of the following determine the pathogenicity of Yersinia pestis?

V and W antigens
All of these
Production of pigmented colonies on haemin containing media
F1 envelope antigen

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Microbiology
Prodigiosin (red pigment) is produced by members of genus

Hafnia
Serratia
Enterobacter
Cirobacter

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Microbiology
Which of the following serotypes of Salmonella can cause gastroenteritis?

S enteritidis
S typhimurium
All of these
S newport

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Microbiology
Blackening in pickles occurs due to

None of these
growth of Pencillium
both (a) and (b)
the formation of hydrogen sulfide by bacteria

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