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Microbiology

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

all of these
Clostridia
Pseudomonas
Mycoplasmas

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Microbiology
The reaction(s) that is/are usually positive in Escherichia coli, is/ are

All of these
Indole reaction
Glucose fermentation
Methyl red reaction

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Microbiology
An enrichment medium for the isolation of Shigella is

Alkaline peptone water
Terathionate broth
Selenite F broth
none of these

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

Cirobacter
Serratia
Enterobacter
Hafnia

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Microbiology
Salmonellae can also be killed by

chlorination
all of these
boiling
pasteurisation

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Microbiology
In Widal test the significant titres for H agglutinins is

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

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