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Environmental Engineering

Environmental Engineering
The most common cause of acidity in water is

Hydrogen
Nitrogen
Oxygen
Carbon dioxide

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Environmental Engineering
For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be

Partially combined system
Combined system
Separate system
Partially separate system

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Environmental Engineering
Cleaning is done by (i) Scraping and removal in filters slow sand (ii) Back washing in slow sand filters (iii) Scraping and removal in filters rapid sand (iv) Back washing in rapid sand filters The correct answer is

(ii) and (iii)
(i) and (iv)
(i) and (ii)
(ii) and (iv)

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Environmental Engineering
Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the

Hardness in water
Dissolved oxygen in water
Turbidity in water
Residual chlorine in water

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Environmental Engineering
Hardy cross method of analysis of distribution system (i) Involves successive trials (ii) Takes economic aspects into account (iii) Is time consuming

Only (i)
(i) and (iii)
All are correct
(i) and (ii)

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Environmental Engineering
The rate of Alteration of pressure filters is

In between the filtration rate of slow sand filters and rapid sand filters
Equal to that of slow sand filters
Less than that of slow sand filters
Greater than that of rapid sand filters

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MORE MCQ ON Environmental Engineering

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