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Identification of Bacteria

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

Streptococcus
Salmonella
Staphylococcus
Proteus

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Identification of Bacteria
The gram-negative organisms is

Actinomyces
Clostridium
None of these
Bacillus

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

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

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Identification of Bacteria
Which of the following organisms can be demonstrated with silver impregnation method?

Spirochaetes
Salmonella
Vibrios
Shigella

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Identification of Bacteria
The deinococci are gram-positive cocci and rods that are distinctive in their unusually great resistance to

desiccation
both (a) and (b)
extreme temperatures
radiation

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Identification of Bacteria
Production of acetoin can be detected by which of the following tests?

Methyl red test
Indole test
Citrate test
Voges-Proskauer test

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