Water Supply Engineering [IES-ESE (Engineering Services) Civil Engineering]: Questions 1 - 4 of 39

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Question 1

Appeared in Year: 2018

Question MCQ▾

The purpose of re-carbonation after water softening by the lime-soda process is the

Choices

Choice (4)Response

a.

Conversion of precipitates to soluble forms in the water

b.

Removal of non-carbonate hardness in the water

c.

Recovery of lime from the water

d.

Removal of excess soda from the water

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Question 2

Appeared in Year: 2018

Question MCQ▾

Consider the following statements regarding waste stabilization ponds:

  1. The pond has a symbiotic process of waste stabilization through algae on one hand and bacteria on the other
  2. The oxygen in the pond is provided by algae through photosynthesis
  3. The detention period is of the order of two to three days
  4. The bacteria which develop in the pond are aerobic bacteria

Which of the above statements are correct?

Choices

Choice (4)Response

a.

1 and 2 only

b.

2 and 3 only

c.

1 and 4 only

d.

3 and 4 only

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Question 3

Appeared in Year: 2018

Question MCQ▾

Five-days BOD of a diluted sample having DO and consumption of oxygen in blank will be

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 4

Appeared in Year: 2018

Question MCQ▾

Consider the following statements regarding groundwater pollutants:

  1. Most of the ground waters are generally non-alkaline
  2. A moderate amount of fluoride, about , in drinking water, would help in good development of teeth
  3. Natural waters do not have dissolved mineral matter in them

Which of the above statements is/are correct?

Choices

Choice (4)Response

a.

1,2 and 3

b.

1 only

c.

3 only

d.

2 only

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