Environmental Engineering in CE MCQs
Practice free Environmental Engineering in CE multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 307 questions — no login required.
Question 217easy
Lagooning process is mainly a means of the
Question 218hard
The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent.
Question 219medium
The main industrial source of emission of hydrogen sulphide air pollutant is
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Question 220hard
Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream?
Question 221medium
__________ is removed from water by lime-soda process.
Question 222hard
The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the
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Question 223hard
A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
Question 224hard
Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?
Question 225easy
Dust collection efficiency of a cyclone separator depends upon its