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Microbiology

Microbiology
Which of the following is a gram-positive bacteria?

Streptococci
All of these
Lactobacillus
Staphylococci

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Microbiology
Abnormal fermentation of cabbage may result in a cheese like odour caused by

all of these
butyric acid
propionic acid
caprioc acid and Valeric acid

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Microbiology
Which of the following media is selective for Salmonella?

Bile salt agar
Wilson and Blair's brilliant-green bismuth sulphite agar medium
All of these
Thiosulphate citrate bile salt agar

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Microbiology
Coliform bacteria on fermentation of carbohydrates yields

all of these
acetic acid
lactic acid
formic acid

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Microbiology
An enrichment medium for the isolation of Shigella is

Alkaline peptone water
none of these
Selenite F broth
Terathionate broth

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Microbiology
In Widal test, the significant titre for O agglutinins is generally

1:50 or more
1:100 or more
1:150 or more
1:2.00 or more

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