Environmental Engineering Sewage treatment units are normally designed for 15 - 28 years 5 - 10 years 15 - 20 years 28 - 30 years 15 - 28 years 5 - 10 years 15 - 20 years 28 - 30 years ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The self cleansing velocity for all sewers in India is usually 1.5 m/sec to 2.0 m/sec 3.0 m/sec to 3.5 m/sec 1.0 m/sec to 1.2 m/sec Less than 1.0 m/sec 1.5 m/sec to 2.0 m/sec 3.0 m/sec to 3.5 m/sec 1.0 m/sec to 1.2 m/sec Less than 1.0 m/sec ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The alum, when added as a coagulant in water Does not require alkalinity in water for flocculation Increases pH value of water Decreases pH value of water Does not affect pH value of water Does not require alkalinity in water for flocculation Increases pH value of water Decreases pH value of water Does not affect pH value of water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The treatment of water with bleaching powder is known as Pre-chlorination De-chlorination Hypo-chlorination Super chlorination Pre-chlorination De-chlorination Hypo-chlorination Super chlorination ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Hardy cross method of analysis of distribution system (i) Involves successive trials (ii) Takes economic aspects into account (iii) Is time consuming All are correct Only (i) (i) and (iii) (i) and (ii) All are correct Only (i) (i) 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 Pressure relief valve Air relief valve Sluice valve Reflux valve Pressure relief valve Air relief valve Sluice valve Reflux valve ANSWER DOWNLOAD EXAMIANS APP
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