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Identification of Bacteria

Identification of Bacteria
The organisms that can be acid-fast stained is

all of these
Nocardia
Tubercle bacilli
Lepra bacilli

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

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

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Identification of Bacteria
The primary stain of Gram's method is

crystal violet
safranin
methyl red
phenolpthalene

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Identification of Bacteria
What is the order of reagents used in the Gram stain?

Crystal violet, iodine, decolorizer, safranin
Crystal violet, safranin, iodine, decolorizer
Crystal violet, iodine, safranin, decolorizer
Safranin, crystal violet, decolorizer, iodine

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

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

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Identification of Bacteria
The gram-negative organisms is

Actinomyces
Clostridium
None of these
Bacillus

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