Environmental Engineering in CE The weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel. 5 10 20 1 5 10 20 1 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 Ionosphere None of these Troposphere Stratosphere Ionosphere None of these Troposphere Stratosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following pollutants is not emitted during volcanic eruptions? Hydrocarbons CO H₂S SO₂ Hydrocarbons CO H₂S SO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In the context of the chemical process industries, the term BOD is normally associated with the Organic concentration in gaseous effluents Characterisation of solid wastes Characterisation of boiler feed water Characterisation of liquid effluents Organic concentration in gaseous effluents Characterisation of solid wastes Characterisation of boiler feed water Characterisation of liquid effluents ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes Asphyxiation (suffocation) Tuberculosis All of these Shortness of breath Asphyxiation (suffocation) Tuberculosis All of these Shortness of breath ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause Explosion Corrosion Non biodegradable foam Undesirable plant growth Explosion Corrosion Non biodegradable foam Undesirable plant growth ANSWER DOWNLOAD EXAMIANS APP
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