Physical Method

Question 1

Methods commonly used in hospitals, clinics, laboratories to destroy or control pathogens

Answer 1

Physical method

Question 2

Most effective, inexpensive, and widely used method of sterilization of inanimate objects and materials that can withstand high temperatures.

Answer 2

Heat

Question 3

Preferred over dry heat because of its rapid killing action. One of the most effective methods of sterilization where the steam under pressure acts as a bactericidal agent

Answer 3

Moist heat

Question 4

Type of Moist Heat

• At temp above 100’c
• Most efficient method of sterilization, it can destroy all microbial forms

Answer 4

Steam under pressure

Question 5

Types of moist heat

• at a temp of 100’c
• moist heat sterilization technique that doesn’t ensure complete sterility, but is enough for the removal of pathogenic vegetative microbes.

Answer 5

Boiling

Question 6

Types of moist heat

• at a temp of 100’c
• the material is exposed to live steam for 30 mins for 3 consecutive days. Vegatative forms are destroy

Answer 6

Fractional Sterilization

Question 7

Types of moist heat

• at temps below 100’c
• destroying disease-producing organisms in milk products and other beverages

Answer 7

Pasteurization

Question 8

The process of removing microorganisms by applying moisture-free heat which is appropriate for moisture-sensitive substances

Answer 8

Dry heat

Question 9

Types of dry heat

• used to sterilize powders, ointment, other glassware that cannot be sterilized using autoclave

Answer 9

Hot Air Oven

Question 10

Types of dry heat

• incineration is the process of sterilization along with a significant reduction in the volume of the wastes

Answer 10

Incineration

Question 11

Types of dry heat

• type of dry sterilization that involves exposure of metallic objects to flame for some time

Answer 11

flaming

Question 12

Type of dry heat ( radiation )

• application is limited only to sterilization of small enclosed areas like operating rooms and hospital wards

Answer 12

Ultraviolet light

Question 13

Types of dry heat ( radiation)

• low temp sterilization method that has been used for a number of medical products

Answer 13

Ionizing Radiation

Question 14

Deprive the microorganisms of moisture. Used in food preservation like dried fish and raisins

Answer 14

Desiccation

Question 15

Lyophilization organisms are rapidly frozen, then dehydrated in high vacuum and stored in vacuum sealed containers

Answer 15

Freezing

Question 16

From mechanical sieving. Microorganisms are not killed but merely separated from the liquid

Answer 16

Filtration

Question 17

Types of Physical Method

Answer 17

• Moist heat
• Dry Heat
• Dry Heat ( Radiation )
• Freezing
• Filtration