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Identification of Bacteria

Identification of Bacteria
Which of the following shows a positive urease test?

None of these
Both (a) and (b)
Proteus
Klebsiella

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Identification of Bacteria
Which of the following is commonly used as Gram's decolouriser?

Ethyl alcohol
Methyl alcohol
A mixture of ethyl alcohol and acetone
Acetone

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Identification of Bacteria
Catalase production is negative in which of the following?

Streptococcus
Salmonella
Proteus
Staphylococcus

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Identification of Bacteria
Gram staining was developed accidentally in 1884 by

Alexander Fleming
Robert Gram
Joseph Christian Gram
Hans Christian Gram

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Identification of Bacteria
Which of the following is a substitute for crystal violet used in gram-staining procedure?

Methylene blue
Safranin
Bromocresol green
Phenolpthalene

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Identification of Bacteria
The gram-negative organisms is

Bacillus
None of these
Clostridium
Actinomyces

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