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Microbiology

Microbiology
In Widal test the significant titres for H agglutinins is

1:50 or more
1:100 ormore
1:200 or more
1:400 or more

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Microbiology
Salmonellois is caused by the

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

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Microbiology
Gram-negative bacteria, responsible for food poisoning, is/are

None of these
Clostridia
Salmonella
Pseudomonas

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

Hafnia
Cirobacter
Serratia
Enterobacter

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Microbiology
Shriveling in fermented pickles results from the physical effect of

all of these
too strong salt solution
too strong sugar solution
too strong vinegar solution

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Microbiology
Which of the following bacteria is/are known as coliform bacilli?

All of these
Klebsiella
Escherichia
Enterobacter

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