Environmental Engineering in CE The main industrial source of emission of hydrogen sulphide air pollutant is Petroleum refineries Pulp and paper plant Coal based thermal power plants Metallurgical roasting & smelting plant Petroleum refineries Pulp and paper plant Coal based thermal power plants Metallurgical roasting & smelting plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream? Sedimentation tank Chemical coagulation Mechanical flocculation Circular clarifier Sedimentation tank Chemical coagulation Mechanical flocculation Circular clarifier ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE __________ is removed from water by lime-soda process. Temporary hardness Foul smell and taste Iron and manganese Permanent hardness Temporary hardness Foul smell and taste Iron and manganese Permanent hardness ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 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 Stratosphere Troposphere Ionosphere None of these Stratosphere Troposphere Ionosphere None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 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 Global warming Atmospheric effect Ionosphere Green house Global warming Atmospheric effect Ionosphere Green house ANSWER DOWNLOAD EXAMIANS APP
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