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Identification of Bacteria

Identification of Bacteria
The gram-negative organisms is

Bacillus
Actinomyces
Clostridium
None of these

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Identification of Bacteria
At what concentration of sulphuric acid, Nocardia resists decolourization?

10% sulphuric acid
8% sulphuric acid
0.5% sulphuric acid
5% sulphuric acid

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Identification of Bacteria
The process of Gram staining is based on the ability of bacterial cell wall

to retain part of both dyes
none of above
to retain the crystal violet dye during solvent treatment.
to retain the safranin dye

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

Streptococcus
Salmonella
Staphylococcus
Proteus

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

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

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Identification of Bacteria
Which of the following(s) is/ are oxidase-positive bacteria?

Vibrio
Neisseria
All of these
Pseudomonas

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