The optimum value in natural water is ________
A) 2-4ppm
B) 4-7ppm
C) 4-6ppm
D) 2-7ppm
Correct Answer:
Verified
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
Q9: The _ is an important requirement of
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
Q15: What is the minimum quantity of dissolved
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