Related Questions

A. some towns in Bangladesh are polluted B. All polluted towns should be destroyed C. Town Dhaka should be destroyed D. Town Dhaka is polluted E. Some towns in Bangladesh should be destroyed
A BDE
B BAE
C ADE
D CDB
Each question consists of five statements following by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument, that is, where the third statement is a conclusion drawn from the preceding two statements. A.Some towns in Bangladesh are polluted .B.All polluted towns should be destroyed.C.Town Dhaka should be destroyed.D.Town Dhaka is polluted.E.Some towns in Bangladesh should be destroyed
A BDE
B BAE
C ADE
D CDB
The most commonly used chemical coagulant in water treatment is
A Ferrous sulphate
B Alum
C Lime
D Hydrazine
The receptionist at a veterinary clinic reviewed the office records and found that 3 out of every 8 animals treated at the clinic during the last 4 months were cats. At this rate, how many cats will be treated during the next 12 weeks if a total 288 animals are treated ?
A 108
B 96
C 36
D 24
Which of the following is used as a coagulant in water treatment?
A Chloramine
B Chlorine
C Ferrous sulphate
D Hydrogen peroxide
Which is the most widely used coagulant for the treatment of turbid water?
A Alum (aluminium sulphate)
B Lime
C Ferric chloride
D Sodium aluminate
The alum, when added as a coagulant in water
A Does not require alkalinity in water for flocculation
B Does not affect pH value of water
C Increases pH value of water
D Decreases pH value of water
Pick out the one which is not a chemical coagulant.
A Aluminium sulphate
B Ferrous sulphate
C Hydrated lime
D Chloramine
Polluted water having low BOD are most economically treated in
A Sedimentation tanks
B Oxidation ponds
C Sludge digester
D Clarifier
Coagulant is used __________ filtration.
A Before
B After
C During
D To avoid

Next steps