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Microbiology

Microbiology
Primarily human pathogenic bacteria is/are ,

S paratyphi B
Salmonella typhi
S paratyphi A
all of these

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Microbiology
Soft pickles are made so by pectolytic enzymes mostly from

bacteria
none of these
yeasts
moulds

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Microbiology
Salmonellois is caused by the

endotoxin of Salmonella spp
exoenterotoxin of Salmonella spp
enterotoxin of Salmonella spp
neurotoxin of Salmonella spp

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Microbiology
Blackening in pickles occurs due to

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

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Microbiology
Which of the following is/are not a gram-positive bacteria?

None of these
Mycobacteria
Streptococci
Pseudomonas

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Microbiology
Which of the following can readily kill Salmonellae?

Moist heat at 55°C for 20 min
Moist heat at 55°C for 10 min
Moist heat at 55°C for 30 min
Moist heat at 55°C for 1 hr

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