The ____________ is an important requirement of the aquatic life.
A) Dissolved nitrogen
B) Dissolved chlorine
C) Dissolved oxygen
D) Dissolved methane
Correct Answer:
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Q4: Bacteria and micro organisms present in the
Q5: Infectious hepatitis is caused by _
A)Bacteria
B)Viruses
C)Protozoa
D)Helminth
Q6: Amoebic dysentery is caused by _
A)Viruses
B)Bacteria
C)Helminth
D)Protozoa
Q7: Bacteria in water causes _
A)Malaria
B)Typhoid
C)Dengue
D)Chicken guinea
Q8: Helminth in the water causes _
A)Hook worm
B)Amoebic
Q10: The optimum value in natural water is
Q11: The disappearance of the plants and animals
Q12: The decomposition of the matter produces into
Q13: The organic matter present in the water
Q14: The temperature of sewage increases. What will
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