MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Ceepryn belongs to which of the following categories? |
| A. | Anionic detergents |
| B. | Cationic detergents |
| C. | Nonionic detergents |
| D. | Ammonium salts |
| Answer» C. Nonionic detergents | |
| 2. |
Gonococci are inhibited by tryptoflavine in dilutions of ____________ |
| A. | 1:200,000 |
| B. | 1:300,000 |
| C. | 1:1,000,000 |
| D. | 1:10,000,000 |
| Answer» E. | |
| 3. |
Which of the following is an acridine dye? |
| A. | crystal violet |
| B. | malachite green |
| C. | tryptoflavine |
| D. | brilliant green |
| Answer» D. brilliant green | |
| 4. |
Gram-negative organisms are more susceptible to higher concentrations of triphenylmethane dyes. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which of the following agents cause death to the cell by coagulation of cytoplasmic proteins? |
| A. | Alcohol |
| B. | Dyes |
| C. | Chlorine |
| D. | Heavy metals |
| Answer» E. | |
| 6. |
Which among the following is an example of an organic compound of mercury? |
| A. | Mercuric chloride |
| B. | Mercuric oxide |
| C. | Mercurochrome |
| D. | Ammoniated mercury |
| Answer» D. Ammoniated mercury | |
| 7. |
Solutions of sodium hypochlorite of a 1% concentration are used for ________ |
| A. | sanitizing dairy equipment |
| B. | personal hygiene and a household disinfectant |
| C. | household bleaches |
| D. | disinfecting open wounds |
| Answer» C. household bleaches | |
| 8. |
How much percentage of the aqueous solution of phenol rapidly kills the vegetative cells of microorganisms? |
| A. | 1% |
| B. | 2% |
| C. | 5% |
| D. | 10% |
| Answer» D. 10% | |