Environmental Engineering For a given discharge, the efficiency of sedimentation tank can be increased by Increasing the depth of tank Decreasing the surface area of tank Increasing the surface area of tank Decreasing the depth of tank Increasing the depth of tank Decreasing the surface area of tank Increasing the surface area of tank Decreasing the depth of tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The suitable method for disinfection of swimming pool water is Ultra violet rays treatment By using potassium permanganate Lime treatment Chlorination Ultra violet rays treatment By using potassium permanganate Lime treatment Chlorination ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Cleaning is done by (i) Scraping and removal in filters slow sand (ii) Back washing in slow sand filters (iii) Scraping and removal in filters rapid sand (iv) Back washing in rapid sand filters The correct answer is (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is Reflux valve Sluice valve Pressure relief valve Air relief valve Reflux valve Sluice valve Pressure relief valve Air relief valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If Biochemical oxygen demand (BOD) of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is 1,00,000 4000 1000 4,00,000 1,00,000 4000 1000 4,00,000 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 10100 9800 10920 9500 10100 9800 10920 9500 ANSWER DOWNLOAD EXAMIANS APP
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