4 Lec Q Part 2 - Water Pollution Quiz

<p>Blood poisoning</p> Signup and view all the answers

<p>Oil tankers</p> Signup and view all the answers

<p>Dissolved minerals and suspended impurities</p> Signup and view all the answers

<p>Diabetes</p> Signup and view all the answers

<p>Wash hands with soap and water</p> Signup and view all the answers

<p>Metal salts</p> Signup and view all the answers

<p>Boiling</p> Signup and view all the answers

<p>To kill bacteria and viruses</p> Signup and view all the answers

<p>Germkill Processor</p> Signup and view all the answers

<p>All of the above</p> Signup and view all the answers

<p>0.5 mg/L</p> Signup and view all the answers

<p>Chlorine gas</p> Signup and view all the answers

<p>Bacteria and certain viruses</p> Signup and view all the answers

<p>To allow natural purification processes</p> Signup and view all the answers

<p>7-10 days</p> Signup and view all the answers

<p>Microfibre Mesh</p> Signup and view all the answers

<p>Dissolved minerals</p> Signup and view all the answers

<p>C &amp; D</p> Signup and view all the answers

<p>Cell damage in the human body</p> Signup and view all the answers

<p>All of the above are true</p> Signup and view all the answers

<p>Microfibre Mesh</p> Signup and view all the answers

<p>To kill bacteria</p> Signup and view all the answers

<p>Water should be clear and free from turbidity</p> Signup and view all the answers

<p>Arsenic = Cancer, vascular disease, liver disease, skin lesions, neurological diseases Fluoride = Fluorosis Chlorine = Toxic &amp; causes sufficient cell damage in the human body Iodine = Enlargement of thyroid gland &amp; mental retardation</p> Signup and view all the answers

<p>Point sources = Discharge pollutants from specific locations, such as factories and sewage treatment plants Non point sources = Run off water containing pesticides and fertilizers from areas of agricultural land that are difficult to monitor and control Sewage = Contains decomposable organic matter and pathogenic agents Industrial and trade waste = Contains toxic agents ranging from metal salts to complex synthetic organic chemicals</p> Signup and view all the answers

<p>Compact Carbon Trap = Removes harmful parasites and pesticides to give clean drinking water. Polisher = Removes chlorine and other contaminants to make water clear, odourless and great tasting. Germkill Processor = Uses 'programmed chlorine release technology' to target and remove invisible harmful viruses and bacteria and provide pure drinking water. Microfibre Mesh = Removes visible dirt to give safe drinking water.</p> Signup and view all the answers

<p>Chlorination = Kills bacteria, no effect on spores and certain viruses except in high doses. Oxidizes iron, manganese and H2S. Destroys some color &amp; odor producing constituent. Boiling = Removes temporary hardness from water Chloramines = Loose compounds of cl2 and NH3 Less tendency to produce chlorinous taste more persistent type of residual cl2 , gives more persistent type of residual cl2 . Slow in action hence not used. Chemical Disinfection = Kills harmful viruses and bacteria in water</p> Signup and view all the answers

<p>Boiling = Physical method Chemical Disinfection = Chemical method Germkill Processor = Biological method Chlorination = Chemical method</p> Signup and view all the answers

<p>Perchloron = (HTH) ca compound with 60-70% available Cl2 . Solution of HTH also used. Gas is first choice Chemical = organic matter in the water oxidized by aerobic bacteria with the help of dissolved o2 Physical = 90% suspended impurities settle down by gravity in 24 hrs. rendering clear water Biological = drop in bacterial count by 90% in 5-7 days. Optimum storage 7-10 days thereafter chance of algal growth causing change in color &amp; odor</p> Signup and view all the answers