L6

Question 1

the process of destroying all forms of life, including spores and viruses

Answer 1

Sterilization

Question 2

the process of destroying vegetative pathogens, but not necessarily spores or viruses

Answer 2

Disinfection

Question 3

Physical methods

Answer 3

Heat, Filtration, Radiation

Question 4

Moist heat

Answer 4

boiling, pasteurisation, autoclaving

Question 5

Dry heat

Answer 5

hot air oven, incineration, flaming

Question 6

Its disinfecting only, NOT sterilizing process

Answer 6

Boiling

Question 7

Spores not killed by this method

Answer 7

Boiling

Question 8

kills most of the pathogenic organisms, particularly viruses
and bacteria causing waterborne diseases

Answer 8

Boiling

Question 9

Pasteurization Kills milk-borne vegetative pathogens such as:

Answer 9

Staphylococcus, Mycobacterium tuberculosis, Brucella, Salmonella,
Coxiella, Listeria

Question 10

Are Spores killed in pasteurization

Answer 10

no

Question 11

Slow pasteurization

Answer 11

heating at 63 to 65°C for 30 minutes

Question 12

Rapid, high, or flash pasteurization

Answer 12

heating at 72°C for 15-20 seconds followed by rapid cooling

Question 13

Sterilization under 15 pounds pressure and temperature of 121°C for 15 minutes

Answer 13

Autoclaving (Steam under pressure)

Question 14

Most common method of sterilization for materials not damaged by heat or moisture

Answer 14

Autoclaving

Question 15

Hot air oven

Answer 15

1700C for 30 minutes, 1600 C for 60 minutes, and 1500 C for 150 minutes

Question 16

Inert materials like oils, and powders that are not damaged by excessive temperature, but damaged by

Answer 16

steam

Question 17

it should be at a high height

Answer 17

Incinerator: burning

Question 18

Disadvantage – air contamination

Answer 18

Flaming

Question 19

HEPA (High Efficiency Particulate Air)

Answer 19

Filtration

Question 20

they prevent bacteria but not virus because virus is very small in Nanos

Answer 20

Filtration

Question 21

Ionizing radiation

Answer 21

X-rays and Gamma rays used commercially in sterilization of Medical equipments and disposable plastic supplies(syringes

Question 22

Non- Ionizing irradiation

Answer 22

UV rays are used in UV lamps as germicidal lamps, Room surfaces

Question 23

is highly effective on G+ve bacteria,tuberculocidal

Answer 23

Phenol & Phenolics

Question 24

Used as disinfecting materials contaminated with organic materi

Answer 24

Phenol & Phenolics

Question 25

Chlorine & Hypochlorite : used as disinfectant in
hospital environment Ex?

Answer 25

CHLOROX

Question 26

Not sporicidal, surgical hand scrub, hand wash & mouth wash (Rexidin)

Answer 26

Biguanide (Chlorhexidine)

Question 27

G+ve & G-ve bacteria & acid-fast bacilli.
Combined with other disinfectants, as iodine
for increased effectiveness

Answer 27

Iso-propyl alcohol 70% (v/v)

Question 28

used in mouthwashes & antidandruff shampoos

Answer 28

Zinc chloride

Question 29

Used as topical antimicrobial and antiseptic cream for burn patients

Answer 29

Silver nitrate

Question 30

what is the bacteria that can grow in disinfectants?

Answer 30

Pseudomonads bacteria can grow in them

Question 31

To Disinfect medical equipments like endoscopes and
others

Answer 31

Glutaraldehyde & Formaldehyde

Question 32

to Preserve fresh tissues, Prepare vaccines and Fumigation

Answer 32

Formaldehyde

Question 33

A sterilizing gas - kills all microbes & spores

Answer 33

Ethylene oxide

Question 34

Cold sterilization - sterilizes without heat

Answer 34

Ethylene oxide

Question 35

contact lenses disinfection

Answer 35

Oxidizing agent - Hydrogen peroxide