1. Alarm water content is the water content that should not be exceeded if –––––––––– is to be
avoided.
(A) Bacterial growth (B) Mold growth (C) Viral growth (D) None
2. Bacillus anthracis was isolated by :
(A) Louis Pasteur (B) Robert Koch (C) Antonie von Leeuwenhoek (D) Joseph Lister
3. In which organ does Salmonella Typhi exist in carriers?
(A) Lungs (B) Pancreas (C) Gall bladder (D) Spleen
4. Warthin-Starry silver staining is used for demonstration
of :
(A) Leptospira (B) Staphylococci (C) Haemophilus (D) Brucella
5. Urea breath test is used to diagnose :
(A) Actinomycetes
(B) Yersinia enterocolitica
(C) Helicobacter pylori
(D) Plesiomonas
6. Toxin produced by certain strains of both E.coli and
Shigella :
(A) Heat labile toxin
(B) Heat stable toxin
(C) Shiga toxin
(D) Cholera toxin
7. In its action, Diphtheria toxin resembles the toxin of :
(A) Staphylococcus aureus
(B) Bacillus cereus
(C) Clostridium perfringes
(D) Pseudomonas aeruginosa
8. The most common agent causing respiratory infection in
cystic fibrosis patients :
(A) Pseudomonas aeruginosa
(B) E.coli
(C) Staphylococcus aureus
(D) Bordetella
9. Appearance of Bordetella in Gram’s smear resembles :
(A) Palisading
(B) Cuneiform
(C) Thumb print
(D) Boxcar
10. Which of the following pneumococcal vaccine is not
recommended for children under 2 years
of age?
(A) 7 valent conjugate vaccine
(B) 23 valent polysaccharide
vaccine
(C) 13 valent conjugate vaccine
(D) All of these
11. Reduction of disease incidence, prevalence, morbidity or
mortality to a locally acceptable level
as a result of deliberate efforts is known as :
(A) Eradication
(B) Elimination
(C) Control
(D) Source reduction
12. In Eijkman test, MacConkey broth tubes are incubated at
:
(A) 44°C
(B) 25°C
(C) 37°C
(D) 52°C
13. Trickling filter method is used in which of the
following :
(A) Primary sewage treatment
(B) Sewage effluent disposal
(C) Secondary sewage treatment
(D) Screening of sewage
14. Ground water include all except :
(A) Shallow wells (B) Deep wells (C) Spring (D) Lakes
15. Chlorine demand is measured by :
(A) Horrock’s apparatus
(B) Chlorimeter
(C) Double pot
(D) Berkfeld filter
16. Evaluation of the quality of air can be performed by all
the following method except :
(A) Settle plate
(B) Slit sampler
(C) Particle count
(D) Sweep plate method
17. Which of the following method is used for detection of
endotoxin in water?
(A) Multiple tube method
(B) Membrane filtration method
(C) Limulus amebocyte lysate assay
(D) Slit sampler method
18. HEPA filter used in biosafety cabinet is :
(A) High energy particulate air
(B) Highly equipped
particulate air
(C) High effective particulate air
(D) High efficiency
particulate air
19. Which of the following is the heart of the activated
sludge process?
(A) Primary sedimentation tank
(B) Aeration tank
(C) Sludge digestion tank
(D) Secondary sedimentation tank
20. Which of the following is not used to express the
strength of sewage?
(A) E.coli count
(B) Biochemical oxygen demand
(C) Suspended solids
(D) Chemical oxygen demand
Answers:
|
1-B |
2-C |
3-C |
4-A |
5-C |
6-C |
7-D |
8-A |
9-C |
10-B |
|
11-C |
12-A |
13-C |
14-D |
15-A |
16-D |
17-C |
18-D |
19-B |
20-A |