500 Best Irrigation Engineering MCQ
Q73). Sphere shaped bacterias are called
a).Spirilla
b).Bacilli
c).Cocci
d).Trichobacteria
Correct Answer:
Cocci
Explanation:
Q74). B-coli or E-coli are harmless organisms but their presence in water indicates the
a).Presence of pathogenic bacteria
b).Absence of pathogenic bacteria
c).Presence of non pathogenic bacteria
d).Absence of non pathogenic bacteria
Correct Answer:
Presence of pathogenic bacteria
Explanation:
Q75). Membrane filter technique is used for testing
a).E-coli
b).Copper
c).Pathogenic bacterias
d).None of these
Correct Answer:
E-coli
Explanation:
Q76). The bacteria which require oxygen for their survival is known as
a).Anaerobic bacteria
b).Pathogenic bacteria
c).Aerobic bacteria
d).Non pathogenic bacteria
Correct Answer:
Aerobic bacteria
Explanation:
Q77). The bacteria which can survive without oxygen is called
a).Anaerobic bacteria
b).Pathogenic bacteria
c).Aerobic bacteria
d).Non pathogenic bacteria
Correct Answer:
Anaerobic bacteria
Explanation:
Q78). Bacteria which cause disease are called
a).Anaerobic bacterias
b).Facultative bacterias
c).Aerobic bacterias
d).None of these
Correct Answer:
None of these
Explanation:
Q79). The total count of bacteria per cubic centimetre for domestic purposes varies from
a).0 to 100
b).100 to 150
c).150 to 200
d).200 to 250
Correct Answer:
0 to 100
Explanation:
Q80). Copper sulphate is the most common chemical used for controlling
a).Bacteria
b).Algae
c).Silt
d).Mineral matter
Correct Answer:
Algae
Explanation: