Environmental Engineering Alum as a coagulant is found to be most effective when pH range of water is 6 to 8 8 to 10 2 to 4 4 to 6 6 to 8 8 to 10 2 to 4 4 to 6 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering When there is no recirculation of sewage, then recirculation factor is None of these 1 Infinity None of these 1 Infinity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Copper sulphate Sodium permanganate Sulphuric acid Lime Copper sulphate Sodium permanganate Sulphuric acid Lime ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following values of pH represents a stronger acid? 3 4 2 5 3 4 2 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Generally the detention period for grit chambers is kept as 1 minute 5 minutes 24 hours 12 hours 1 minute 5 minutes 24 hours 12 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is 9500 10920 10100 9800 9500 10920 10100 9800 ANSWER DOWNLOAD EXAMIANS APP
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