[{"id":226668,"question":"Which one of the followings is not a pollutant.","choices":[{"text":"CO2","value":"A"},{"text":"NO2","value":"B"},{"text":"CO","value":"C"},{"text":"SO2","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":226667,"question":"On earth polar ice caps and glacier contains H2O","choices":[{"text":"1%","value":"A"},{"text":"2%","value":"B"},{"text":"3%","value":"C"},{"text":"10%","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":226666,"question":"How much fresh water is used for domestic purpose","choices":[{"text":"8%","value":"A"},{"text":"23%","value":"B"},{"text":"69%","value":"C"},{"text":"100%","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":226665,"question":"Half mass of atmosphere gases is present in.","choices":[{"text":"5-6 km distance above the surface of earth","value":"A"},{"text":"10 km above the surface","value":"B"},{"text":"100 km above the surface","value":"C"},{"text":"56 km above the surface","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":226664,"question":"The temperature in the incineration of industrial and hazardous waste process has a range.","choices":[{"text":"900 to 1000 <sup>o</sup>C","value":"A"},{"text":"250 to 500<sup>o</sup>C","value":"B"},{"text":"950 to 1300<sup>o</sup>C","value":"C"},{"text":"500 to 900<sup>o</sup>C","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":226663,"question":"In purification of potable water the coagulant used is","choices":[{"text":"Nickel sulphate","value":"A"},{"text":"Copper sulphate","value":"B"},{"text":"Barium sulphate","value":"C"},{"text":"Alum","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":226662,"question":"The main pollutant of leather tanneries in the waste water is due the salt of.","choices":[{"text":"Lead","value":"A"},{"text":"Chromium (VI)","value":"B"},{"text":"Copper","value":"C"},{"text":"Chromium (III)","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":226661,"question":"Ecosystem is smaller units of.","choices":[{"text":"Lithosphere","value":"A"},{"text":"Hydrosphere","value":"B"},{"text":"Atmosphere","value":"C"},{"text":"Biosphere","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":226660,"question":"Fungicides are teh pesticides which","choices":[{"text":"Control the growth of fungus","value":"A"},{"text":"Kill insects","value":"B"},{"text":"Kill plant","value":"C"},{"text":"Kill herbs","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":226659,"question":"A single chloride free radical can destroy how many ozone molecules.","choices":[{"text":"100","value":"A"},{"text":"100000","value":"B"},{"text":"10000","value":"C"},{"text":"10","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":226658,"question":"The avoid teh formation of toxic compounds with chlorine which substance is used for disinfecting water.","choices":[{"text":"KMnO4","value":"A"},{"text":"O3","value":"B"},{"text":"Alum","value":"C"},{"text":"Chloramines","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":226657,"question":"Peroxyacetyl nitrate is an irritant to humab beings and it affects","choices":[{"text":"Eyes","value":"A"},{"text":"Ears","value":"B"},{"text":"Stomach","value":"C"},{"text":"Nose","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":226656,"question":"The pH range of the acid rain is.","choices":[{"text":"7-6.5","value":"A"},{"text":"6.5-6","value":"B"},{"text":"6-6.5","value":"C"},{"text":"Less than 5","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":226655,"question":"Disinfection of water by chlorine is done by the production of.","choices":[{"text":"NH2Cl","value":"A"},{"text":"NCl2","value":"B"},{"text":"HOCl","value":"C"},{"text":"NHCl2","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":226654,"question":"Water will be considered polluted if it has dissolved oxygen.","choices":[{"text":"3ppm","value":"A"},{"text":"4ppm","value":"B"},{"text":"5ppm","value":"C"},{"text":"6 ppm","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":226653,"question":"The disease can be eradicated by using pesticides.","choices":[{"text":"Malaria","value":"A"},{"text":"Yellow fever","value":"B"},{"text":"Sleeping sickness","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":226652,"question":"The minimum temperature of troposphere is.","choices":[{"text":"-2<sup>o</sup>C","value":"A"},{"text":"-56<sup>o</sup>C","value":"B"},{"text":"-100<sup>o</sup>C","value":"C"},{"text":"15<sup>o</sup>C","value":"D"},{"value":"E"}],"correctAnswer":2}]