Environmental Engineering in CE Iron & manganese present in the polluted water is removed by Chlorination only Chemical coagulation Simple filtration Oxidation followed by settling & filtration Chlorination only Chemical coagulation Simple filtration Oxidation followed by settling & filtration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The upper layer of atmosphere is called the None of these Ionosphere Stratosphere Troposphere None of these Ionosphere Stratosphere Troposphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most lethal water pollutant? Chlorine Suspended solids Alkalis Phenol and cynide Chlorine Suspended solids Alkalis Phenol and cynide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)? Carbon monoxide Peroxyacyl nitrate Sulphur dioxide Benzopyrene Carbon monoxide Peroxyacyl nitrate Sulphur dioxide Benzopyrene ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is Cavitation Boundary layer separation Pipe vibrations Fluctuation in liquid flow Cavitation Boundary layer separation Pipe vibrations Fluctuation in liquid flow ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools). 25-30 15-20 43961 43832 25-30 15-20 43961 43832 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS