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Microbiology

Microbiology
Primarily human pathogenic bacteria is/are ,

S paratyphi A
Salmonella typhi
all of these
S paratyphi B

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Microbiology
Slimy or ropy kraut is caused by

Lactobacillus lactis
encapsulated varieties of Lactobacillus brevis
encapsulated varieties of Lactobacillus plantarum
None of these

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

73 Rad
173 Rad
7.3 Mrad
73 Gy

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Microbiology
Species of Shigella which is predominant in India is

S flexneri
S dysenteriae
S boydii
S sonnei

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Microbiology
Salmonellae can also be killed by

all of these
chlorination
boiling
pasteurisation

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Microbiology
Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae?

They are catalase-positive
They ferment glucose
They are oxidase-negative
They reduce nitrates to nitrites

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