Hamad Environmental Engineering 14/12/2021 A. 10 to 15 B. 20 to 25 C. 30 to 35 D. 40 to 50 Related Mcqs: The polluted water is one which_______________?A. contains pathogenic bacteria B. consists of undesirable substances rendering it unfit for drinking and domestic use C. is safe and suitable for drinking and domestic use D. is contaminated... Activated carbon is used for_____________?A. disinfection B. removing hardness C. removing odours D. removing corrosiveness... For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as___________________?A. 4.5 to 6.0 B. 6.5 to 8.0 C. 8.5 to 10.0 D. 10.5 to 12.0... If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be__________________?A. 4 mm/hr B. lOmm/hr C. 20 mm/hr D. 40 mm/hr... The velocity of flow of water in a sedimentation tank is about__________________?A. 5 to 10 cm/sec. B. 15 to 30 cm/sec. C. 15 to 30 cm/minute D. 15 to 30 cm/hour...
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