Environmental Engineering Corrosion in concrete sewers is caused by Chlorine Nitrogen Dissolved oxygen Septic conditions Chlorine Nitrogen Dissolved oxygen Septic conditions ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if Particle size is decreased None of these The depth of tank is decreased The surface area of tank is increased Particle size is decreased None of these The depth of tank is decreased The surface area of tank is increased ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The slope of sewer shall be Given in the direction of natural slope of ground Given in the direction opposite to natural slope of ground Steeper than 1 in 20 Zero Given in the direction of natural slope of ground Given in the direction opposite to natural slope of ground Steeper than 1 in 20 Zero ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Facultative bacteria are able to work in Absence of oxygen only Presence of oxygen only Presence of water Presence as well as in absence of oxygen Absence of oxygen only Presence of oxygen only Presence of water Presence as well as in absence of oxygen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The disinfection efficiency of chlorine increases by (i) Decreasing the time of contact (ii) Decreasing the temperature of water (iii) Increasing the temperature of water Both (i) and (iii) Both (i) and (ii) Only (iii) Only (i) Both (i) and (iii) Both (i) and (ii) Only (iii) Only (i) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally More and less More and more Less and more Less and less More and less More and more Less and more Less and less ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS