1. The vaporised water
is called
2. a) marine microbiology
3. c) benthos
4. c) Planktons
5. b) 3.5%
6. a) Clostridium oceanicum is present
7. c) both a and b
8. b) E.coli from Enterobacter aerogenes
9. d) all of these
10. d) all of the above
11. a) Aluminium sulphate
12. c) more polluted water
13. a) algae
14. d) all of the above
15. d) floccules
a) ground waterb) atmospheric waterc) surface waterd) impounded water
2. The study of marine microbes is
called
a) marine microbiologyb) marinologyc) marine bacteriologyd) none of these
3. Microbes found at the bottom of
oceans are called
a) limnosb) phytoplanktonc) benthosd) zooplankton
4. The floating and drifting
microbes are called
a) zooplanktonsb) benthosc) Planktonsd) none of these
5. The average salinity in oceans
is about
a) 10%b) 3.5%c) 80%d) 90%
6. In polluted regions of oceans,
a unique species of Clostridium called
a) Clostridium oceanicum is presentb) Clostridium marinine is presentc) Clostridium subtilis is presentd) none of these
7. Major faecal contaminant in
potable water is
a) Escherichia colib) Streptococcus faecalisc) both a and bd) Escherichia coli only
8. IMViC test is carried out to
distinguish the presence of
a) E.coli from Clostridiumb) E.coli from Enterobacter aerogenesc) E.coli from Streptococcusd) E.coli from other bacteria
9. IMViC test includes
a) Indole test and methyl red testb) Voges Proskauer testc) citrate testd) all of these
10. Disinfection include
a) Chlorinationb) UV radiationc) ozonationd) all of the above
11. Sedimentation of large
particulate matter is enhanced by
a) Aluminium sulphateb) Potassium nitratec) Potassium permanganated) Chlorination
12. High BOD indicates
a) less polluted waterb) less number of organismsc) more polluted waterd) none of these
13. Oxidation
ponds for secondary waste water treatment is designed to promote growth
of
a) algaeb) fungic) plantsd) bacteria
14. Purification
strategies in municipal water supplies involves
a) sedimentationb) filtrationc) disinfectiond) all of the above
15. Aggregates of microbes as tiny
masses in activated sludge process is called
a) activated sludgeb) massesc) colloidal massesd) floccules
Answers
1. b) atmospheric
water2. a) marine microbiology
3. c) benthos
4. c) Planktons
5. b) 3.5%
6. a) Clostridium oceanicum is present
7. c) both a and b
8. b) E.coli from Enterobacter aerogenes
9. d) all of these
10. d) all of the above
11. a) Aluminium sulphate
12. c) more polluted water
13. a) algae
14. d) all of the above
15. d) floccules
Tags:
Aquatic Microbiology mcq
BOD
Disinfection
floccules
IMViC test
salinity
Sedimentation
vaporised water
