- Disposal of non reusable sharps occurs by :
a. autoclaving
b. safety box
c. red or orange bags with biohazard symbol
d. all of the above

-This bacteria is:
a. stained by methyl violet
b. gram positive cocci
c. gram negative bacilli
d. gram positive bacilli

- Plastic syringes can be sterilized by :
a. ionizing radiation
b. boiling
c. autoclaving
d. all of the above

-The body tube of ordinary microscope contains :
a. eyepiece lens
b. objective lens
c. fine and coarse adjustment
d. all of the above

-In detection of motility by ordinary microscope , all of the followings are true , except:
a. mirror side is concave
b. condenser is downward
c. objective lens is oil immersion
d. diaphragm is semiopened

deep agar is used for
a. isolation of bacteria
b. anaerobic culture
c. preservation of pure culture
d. all of the above

-Loeffler's serum is used to isolate :
a. streptococci
b. pneumonia
c.diphtheria
d. meningococci

- All of the following about throat swabbing are true except
a. use to diagnose upper RT infection
b. kept at 37C till transport
c. taken by sterile ordinary swab
d. should touch both tonsils and tonsillar fossae

-All of the following about CSF sampling are true except:
a. taken by sterile lumbar puncture needle
b. taken between L4 and L5
c. stored at 4C until culture
d. cooled in sterile universal container

-All of the following about growth on Macconky are true except:
a. lactose fermenters appear pink
b. acidic ph change the color of andrad's indicator
c. non lactose fermenters appear uncolored or pale yellow
d. non of the above

-Alkaline ph changes the indicator in:
a. methyl red test
b. sugar fermentation
c. urease test
d. all of the above

- To confirm HIV +ve result by ELISA the following test is used:
a) Immunofluorescence
b) immunoblotting
c) molecular hybridization
d) PCR

Heavy duty gloves are used in all of the following except :
A. Washing contaminated items
B. Environmental cleaning
C. Surgical procedures
D. Transporting wastes

- recording the results of ELISA is done in the form of:
a) color change by spectrophotometer
b) difference in intensity by phase contrast microscope
c) turbidity measure by nephelometer
d) passage of reaction product on gel electrophoresis