Objective Type Question Answers For Environmental Engineering
21. The maximum permissible limit for flouride in drinking water is
a) 0.1 mg/litre
b) 1.5 mg/litre
c) 5 mg/litre
d) 10 mg/litre
Ans:b
22. Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the
a) hardness in water
b) turbidity in water
c) dissolved oxygen in water
d) residual chlorine in water
Ans:a
23. If the coliform bacteria is present in a sample of water, then the coliform test to be conducted is
i) presumptive coliform test
ii) confirmed coliform test
iii) completed coliform test The correct answer is
a) only (i)
b) both (i) and (ii)
c) both (i) and (iii)
d) all (i), (ii) and (iii)
Ans:d
24. Alkalinity in water is expressed as milli-grams per litre in terms of equivalent
a) calcium carbonate
b) magnesium carbonate
c) sodium carbonate
d) calcium hydroxide
Ans:a
25. Which of the following values of pH represents a stronger acid?
a) 2
b) 5
c) 7
d) 10
Ans:a
26. Turbidity is measured on
a) standard silica scale
b) standard cobalt scale
c) standard platinum scale
d) platinum cobalt scale
Ans:a
27. On standard silica scale, the turbidity in drinking water should be limited to
a) 10 ppm
b) 20 ppm
c) 30 ppm
d) 50 ppm
Ans:a
28. Residual chlorine in water is determined by
a) starch iodide method
b) orthotolidine method
c) both (a) and (b)
d) none of the above
Ans:c
29. Orthotolidine test is used for determination of
a) dissolved oxygen
b) residual chlorine
c) biochemical oxygen demand
d) dose of coagulant
Ans:b
30. If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to
a) total alkalinity
b) total hardness
c) total hardness - total alkalinity
d) non carbonate hardness
Ans:a
Read More Environmental Engineering Questions & Answers
Part1 Part2 Part3 Part4 Part5 Part6 Part7 Part8 Part9 Part10
21. The maximum permissible limit for flouride in drinking water is
a) 0.1 mg/litre
b) 1.5 mg/litre
c) 5 mg/litre
d) 10 mg/litre
Ans:b
22. Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the
a) hardness in water
b) turbidity in water
c) dissolved oxygen in water
d) residual chlorine in water
Ans:a
23. If the coliform bacteria is present in a sample of water, then the coliform test to be conducted is
i) presumptive coliform test
ii) confirmed coliform test
iii) completed coliform test The correct answer is
a) only (i)
b) both (i) and (ii)
c) both (i) and (iii)
d) all (i), (ii) and (iii)
Ans:d
24. Alkalinity in water is expressed as milli-grams per litre in terms of equivalent
a) calcium carbonate
b) magnesium carbonate
c) sodium carbonate
d) calcium hydroxide
Ans:a
25. Which of the following values of pH represents a stronger acid?
a) 2
b) 5
c) 7
d) 10
Ans:a
26. Turbidity is measured on
a) standard silica scale
b) standard cobalt scale
c) standard platinum scale
d) platinum cobalt scale
Ans:a
27. On standard silica scale, the turbidity in drinking water should be limited to
a) 10 ppm
b) 20 ppm
c) 30 ppm
d) 50 ppm
Ans:a
28. Residual chlorine in water is determined by
a) starch iodide method
b) orthotolidine method
c) both (a) and (b)
d) none of the above
Ans:c
29. Orthotolidine test is used for determination of
a) dissolved oxygen
b) residual chlorine
c) biochemical oxygen demand
d) dose of coagulant
Ans:b
30. If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to
a) total alkalinity
b) total hardness
c) total hardness - total alkalinity
d) non carbonate hardness
Ans:a
Read More Environmental Engineering Questions & Answers
Part1 Part2 Part3 Part4 Part5 Part6 Part7 Part8 Part9 Part10
No comments:
Post a Comment