Home⇒ Medical Science⇒ Bochemical Engineering⇒ Water treatment
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Temporary hardness of water is caused by the presence of bicarbonates of calcium and magnesium [other wrong options] [Discuss in forum] |
| Q2 ⇒ The common methods used for disinfection in waste water treatment plants are both (a) and (b) [other wrong options] [Discuss in forum] |
| Q3 ⇒ Both temporary and permanent hardness of water can be removed on boiling water with sodium carbonate [other wrong options] [Discuss in forum] |
| Q4 ⇒ Coliform bacteria in water is an indication of the presence of human feces [other wrong options] [Discuss in forum] |
| Q5 ⇒ Permanent hard water may be softened by passing it through sodium hexametaphosphate [other wrong options] [Discuss in forum] |
| Q6 ⇒ Which of the following physical method is used as germicidal in modern time for the treatment of drinking water? UV radiation [other wrong options] [Discuss in forum] |
| Q7 ⇒ The ultimate source of water is rain and snow [other wrong options] [Discuss in forum] |
| Q8 ⇒ The water being used in dairy industry should contain not more than 5 proteolytic and/or lipolytic organisms per ml [other wrong options] [Discuss in forum] |
| Q9 ⇒ The methods used for biological treatment are all of these [other wrong options] [Discuss in forum] |
| Q10 ⇒ The maximum desirable limit (BIS) of total hardness (as CaCo3) in drinking water is 300 ppm [other wrong options] [Discuss in forum] |
| Q11 ⇒ According to BIS the maximum permissible limit of dissolved solids in drinking water is 2000 mg/l [other wrong options] [Discuss in forum] |
| Q12 ⇒ Biological oxidation processes usually referred as biological treatment, are the most common form of secondary treatment [other wrong options] [Discuss in forum] |
| Q13 ⇒ From the following sanitizers which one comes under category of surface active agents? Teepol [other wrong options] [Discuss in forum] |
| Q14 ⇒ BOD stands for biochemical oxygen demand [other wrong options] [Discuss in forum] |
| Q15 ⇒ Zeolite softening process removes both temporary and permanent hardness of water [other wrong options] [Discuss in forum] |
| Q16 ⇒ Application of quaternary ammonium compounds as sanitizing agents tends to increase the percentage of gram(-)ve rods on utensils [other wrong options] [Discuss in forum] |
| Q17 ⇒ Sanitizers used for rubber made equipments are strong alkalis [other wrong options] [Discuss in forum] |
| Q18 ⇒ Temporary hardness of water may be removed by adding calcium hydroxide [other wrong options] [Discuss in forum] |
| Q19 ⇒ The activated sludge process consists of returning a portion of the clarifier influent water entering the reactor [other wrong options] [Discuss in forum] |
| Q20 ⇒ Conventional tertiary treatment is chemical coagulation and flocculation [other wrong options] [Discuss in forum] |
| Or |