Discussion
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- Question
At what concentration of sulphuric acid, Nocardia resists decolourization?
Options- A. 0.5% sulphuric acid
- B. 5% sulphuric acid
- C. 10% sulphuric acid
- D. 8% sulphuric acid
- Correct Answer
- 0.5% sulphuric acid
- 1. The production of sufficient acid by fermentation of glucose leads to decrease in pH such that pH of the medium falls below 4.5. Which of the following test can detect it?
Options- A. Indole test
- B. Methyl red test
- C. Citrate utilization test
- D. Voges-Proskauer test Discuss
- 2. What is the colour of gram -postive bacteria on a gram staining?
Options- A. Purple
- B. Pink
- C. Colourless
- D. Green Discuss
- 3. Gram staining was developed accidentally in 1884 by
Options- A. Alexander Fleming
- B. Hans Christian Gram
- C. Joseph Christian Gram
- D. Robert Gram Discuss
- 4. Production of acetoin can be detected by which of the following tests?
Options- A. Citrate test
- B. Voges-Proskauer test
- C. Methyl red test
- D. Indole test Discuss
- 5. Which of the following is a substitute for crystal violet used in gram-staining procedure?
Options- A. Methylene blue
- B. Bromocresol green
- C. Safranin
- D. Phenolpthalene Discuss
- 6. Which of the following organisms can be demonstrated with silver impregnation method?
Options- A. Vibrios
- B. Salmonella
- C. Spirochaetes
- D. Shigella Discuss
- 7. The organisms that can be acid-fast stained is
Options- A. Nocardia
- B. Tubercle bacilli
- C. Lepra bacilli
- D. all of these Discuss
- 8. Which of the following is commonly used as Gram's decolouriser?
Options- A. Ethyl alcohol
- B. Methyl alcohol
- C. Acetone
- D. A mixture of ethyl alcohol and acetone Discuss
- 9. What is the colour of gram-negative bacteria on a gram staining?
Options- A. Purple
- B. Pink
- C. Green
- D. Colourless Discuss
- 10. Catalase production is negative in which of the following?
Options- A. Streptococcus
- B. Salmonella
- C. Proteus
- D. Staphylococcus Discuss
Identification of Bacteria problems
Search Results
Correct Answer: Methyl red test
Correct Answer: Purple
Correct Answer: Hans Christian Gram
Correct Answer: Voges-Proskauer test
Correct Answer: Methylene blue
Correct Answer: Spirochaetes
Correct Answer: all of these
Correct Answer: A mixture of ethyl alcohol and acetone
Correct Answer: Pink
Correct Answer: Streptococcus
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