Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Take Free Test
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Take Free Test
Home
»
Chemical Engineering
»
Environmental Engineering
Presence of dissolved impurities of __________ is responsible for the red brownish color of water.
carbonates
bi-carbonates
iron & manganese
arsenic
Correct Answer:
iron & manganese
← Previous Question
Next Question→
More Questions from
Environmental Engineering
__________ substances present in sewage are removed in grit chamber during sewage treatment.
Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in
Which of the following acts as a natural source of air pollution?
Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).
Which of the following is the most major constituents of air pollutants?
Presence of high concentration of ozone and smog in atmospheric air causes the
Carbonaceous particles having size less than 1 μm are called
High concentration of carcinogenic hydrocarbon pollutants in atmospheric air causes
In the context of the chemical process industries, the term BOD is normally associated with the
Presence of iron and manganese in water causes
Discussion & Comments
No comments yet. Be the first to comment!
Posting…
Name
Comment
Post Comment
Join Discussion
Discussion & Comments