Top 80+ Solved Sterilisation, Culture Media and Pure Culture Techniques MCQ Questions Answer
Q. Example of Anaerobic medium is
a. Robertson cooked-meat medium
b. Nutrient agar
c. Nutrient broth
d. Mac-Conkey’s agar
Q. The differentiate lactose and non-lactosefermentors, the medium used is
a. Wilson & lair
b. Blood Agar
c. Tetra thionate broth
d. Mac-Conkey’s Agar
Q. Best method for getting pure culture is
a. Streak-plate
b. Agar slant
c. Both a & b
d. None of these
Q. To transfer cultures from one place toanother, the device used is
a. Slant
b. Needle
c. Inoculation loop
d. Autoclave
Q. The bacterial culture prepared by pureculture is
a. Inoculum
b. Suspension
c. Dilution
d. None of these
Q. At the temperature 160oC for one hour,complete sterilization occurs in
a. Autoclave
b. Hot air oven
c. Laminar flow
d. Incubator
Q. In autoclave, the principle involved is
a. Dry heat
b. Moist heat
c. Steam under pressur
d. Both b and c
Q. The spores of th bacteria which canwithstand the moist heat effect also
a. Bacillus subtilis
b. Coxiella burnetti
c. Bacillus stearothermophilus
d. Pseudomonas
Q. Factors on which disinfectivity of a disinfectant depends
a. Concentration of the substance
b. Time of action
c. pH of the medium and temperature suitable for the chemical
d. All of the above
Q. Aldehydes, which are most powerfuldisinfectants
a. Formaldehyde
b. Acetaldehyde
c. Glutamal aldehyde
d. Both a and c
Q. Accridine dyes are more effective against
a. Gram positive
b. Gram negative
c. Mycoplasmas
d. Rickttsiae
Q. Salts of heavy metals used as disinfectants are
a. Thiomersal
b. Phenyl mercury nitrate
c. Mercurochrome
d. All of these