Environmental Engineering in CE The weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel. 20 1 10 5 20 1 10 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km. 6.5 1 0.05 15 6.5 1 0.05 15 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by Lagoons Filtration Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) Biological oxygen pond Lagoons Filtration Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) Biological oxygen pond ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level inside a jet air liner in normal flight is about __________ decibels. 125 145 80 100 125 145 80 100 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of potable water should be between 4 to 5 13 to 14 1 to 1.5 6.5 to 8 4 to 5 13 to 14 1 to 1.5 6.5 to 8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is Pipe vibrations Fluctuation in liquid flow Cavitation Boundary layer separation Pipe vibrations Fluctuation in liquid flow Cavitation Boundary layer separation ANSWER DOWNLOAD EXAMIANS APP