Q. If a 1:600 dilution of a test compound kills a standard population of Staphylococcus aureus in 10 minutes but not 5 minutes while a 1:60 dilution of phenol kills the population in the same time, what is the phenol coefficient of the test compound?

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Q. Microbes can be removed from a liquid solution by the process of

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Q. Which of the following is bactericidal?

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Q. Which of the following process can be efficiently carried out by incineration?

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Q. The organisms retained in the fluids filtered by Seitz filter is

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Q. Which of the following material is sterilized by heating at 160°C in a hot air oven for one hour?

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Q. For sterilization of which material gamma rays can be used?

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Q. Which of the following is sterilized with the help of glutaraldehyde?

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Q. The time in minutes at a specific temperature needed to kill a population of cells is the

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Q. Which of the following is a limitation of the autoclave?

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Q. Which of the following has most heat resistant spores?

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Q. The lowest temperature that kills all microorganisms in a liquid suspension in 10 minutes is known as the

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Q. Which of the following tests is designed to simulate the natural conditions under which the disinfectants are used in hospitals?

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Q. Steam exposure of a material at 100°C for 20 minutes for three consecutive days is known as

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Q. Which of the following material is sterilized by use of red heat?

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Q. Which of the following methods will not sterilize?

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Q. Which of the following is/are vapour-phase disinfectant/s?

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Q. Sweet and salty foods frequently don't require refrigeration to prevent spoilage because they have

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Q. Iodophores are mixture of

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Q. Which of the following compounds are commonly used as general antiseptics to treat cuts and scratches?

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