MCQs Mock Test for Lab Technicians and Technologists: Chapter 63

At the temperature 160^oC for one hour, complete sterilization occurs in

The term that is used for the bacteria which can withstand pasteurization but does not grow at higher temperatures

By pasteurization

The bacterial culture prepared by pure culture is

The micro-organisms grow at high salinity are

Viruses can be cultivated in

Aldehydes, which are most powerful disinfectants

Cultures are prepared by penetrating the inoculation loop with suspension into the medium, they are

Glassware are sterilized by

In autoclave, the principle involved is

Spores of actinomycetes are very sensitive, killed at room temperature of

Accridine dyes are more effective against

Laboratory diagnosis of enteric fever is based on

Example of Anaerobic medium is

The condition required for autoclave

Blood agar medium is

The temperature required for pasteurization is

Separation of a single colony is

In the medium other than nutrients, if any substance is used in excess, that medium is

Wilson and Blair medium is used for isolation of

The spores of th bacteria which can withstand the moist heat effect also

Non-lactose fermenting colonies seen on Mac Conkey’s medium are

Example for indicator medium is

Growth period of the culture is

Factors on which disinfectivity of a disinfectant depends

A common laboratory method of cultivating anaerobic micro-organisms is

Temperature used for hot air oven is

The principle involved in the streak plate method is

Infrared radiation is a method of sterilization by

Agar is obtained form

Isolation is

Tyndallisation was proposed by

This is an agar plate method and is commonly used for estimation of the number of bacteria in milk.

Alkaliphiles grow at pH value between

Salts of heavy metals used as disinfectants are

Phenol co-efficient indicates

Spores are killed by

Lyophilization means

A gram positive organism which produces swarming on culture medium is

To transfer cultures from one place to another, the device used is

Which of the following are gas producing Salmonella?

Enhancement of virulence in bacteria is known as

Kauffmann white scheme is used to detect

Spores of actinomycetes are very sensitive, killed at room temperature of

For effective sterilization in an autoclave the temperature obtained is

Best method for getting pure culture is

The sterilizing agent is

Shigella was first isolated by

Lysozyme is effective against

Culture media for fungi are