Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 300 ppm 700 ppm 50 ppm 100 ppm 300 ppm 700 ppm 50 ppm 100 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels. 30 100 70 3 30 100 70 3 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. May increase or decrease ; depends on the chemical characteristics of polluted water Remains constant Decreases Increases May increase or decrease ; depends on the chemical characteristics of polluted water Remains constant Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur? None of these Stratosphere Troposphere Thermosphere None of these Stratosphere Troposphere Thermosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of __________ bacteria in water causes disease like typhoid. Aerobic Anaerobic Non-pathogenic Pathogenic Aerobic Anaerobic Non-pathogenic Pathogenic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Insufficient washing of sand grains in a rapid sand filter causes Expansion of filtering media Mud balls Shrinkage of filtering media Air binding Expansion of filtering media Mud balls Shrinkage of filtering media Air binding ANSWER DOWNLOAD EXAMIANS APP
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