Environmental Engineering in CE Disinfection of water is done to remove Foul odour Bad taste Color Bacteria Foul odour Bad taste Color Bacteria ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. Organic None of these Inorganic Radioactive Organic None of these Inorganic Radioactive ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO₂ in air is __________ ppm. 2000 500 5 1000 2000 500 5 1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Smog is not formed due to the presence of __________ in the atmosphere. SO₂ Any of these NOx CO₂ SO₂ Any of these NOx CO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels. 85 105 125 145 85 105 125 145 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 None of these Stratosphere Troposphere Ionosphere None of these Stratosphere Troposphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
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