MCQs Civil Engineering
1. which one of the following is not turbidity test on water ?
(a)Jackson’s
(b)Baylis
(c)Nephelometer
(d)Hener’s
Ans. (d)
2. Presence of nitrogen in a waste water sample in due to the decomposition of
(a)Carbohydrates
(b)Proteins
(c)Fats
(d)Vitamins
Ans. (b)
3. Methemoglobinemia is caused due to drinking of water having excess of :
(a)Fluorides
(b)Iron
(c)Hardness
(d)Nitrates
Ans. (d)
4. Iron and manganese can be removed from water by
(a)Boiling
(b)Aeration followed by coagulation
(c)Chlorination
(d)Activated carbon addition
Ans. (b)
5. On Standard silica, the turbidity in drinking water should be linited to
(a) 10ppm
(b) 20ppm
(c) 30ppm
(d) 50ppm
Ans. (a)
6. Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the
(a) Hardness in water
(b) Turbidity
(c) Dissolved
(d) Residual chlorine in water
Ans. (a)
7. Disappearance of pink colour of water of a well due of KmnO4 indicates that water contains
(a) acidity
(b) alkalinity
(c) organic matter
(d) All of these above
Ans. (c)
8. Which tese is used to measure the resistance to the passage of light through the water ?
(a) Turbidity test
(b) Temperature
(c) Colour test
(d) Permissible test
Ans. (a)
9. If the Po vlue is 3 which if means
(a) Water got faint odour
(b) Water got distinct odour
(c) Water got strong odour
(d) Water got extermely strong odour
Ans. (b)
10. EDTA test us used for determine :
(a) Hardness in water
(b) Turbidity
(c) Bacteria content
(d) pH
Ans. (a)
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