[{"id":140308,"question":"Acid rains are produced by","choices":[{"text":"Excess NO<sub>2</sub> and SO<sub>2</sub>from burning fossil fuels","value":"A"},{"text":"Excess production of NH<sub>3</sub> by industry and coal gas","value":"B"},{"text":"Excess release of carbon monoxide by incomplete combustion","value":"C"},{"text":"Excess formation of CO<sub>2</sub> by combustion and animal respiration","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":140307,"question":"Carbon monoxide is pollutant as it","choices":[{"text":"Inactivates nerves","value":"A"},{"text":"Inhibits glycolysis","value":"B"},{"text":"Combines with oxygen","value":"C"},{"text":"Combines with hemoglobin","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":140306,"question":"SO<sub>2</sub> and NO<sub>2</sub>produce pollution by increasing","choices":[{"text":"Alkalinity","value":"A"},{"text":"Acidity","value":"B"},{"text":"Neutrality","value":"C"},{"text":"Buffer action","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":140305,"question":"Pollutant of automobile exhausts that affects nervous system/produces mental diseases is","choices":[{"text":"Mercury","value":"A"},{"text":"Lead","value":"B"},{"text":"Nitrogen oxide","value":"C"},{"text":"Sulphur oxide","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":140304,"question":"Sulphure dioxide affects","choices":[{"text":"Cell wall","value":"A"},{"text":"Plasmodesmata","value":"B"},{"text":"All membrane systems","value":"C"},{"text":"Nucleus","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":140303,"question":"Cyclone collector is used for minimizing","choices":[{"text":"Radioactive pollution","value":"A"},{"text":"Air pollution","value":"B"},{"text":"Noise pollution","value":"C"},{"text":"Water pollution","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":140302,"question":"Minamata disease is due to pollution of","choices":[{"text":"Organic waste","value":"A"},{"text":"Oil spill in water","value":"B"},{"text":"Industrial waste containing mercury into fishing water","value":"C"},{"text":"Arsenic into the atmosphere","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":140301,"question":"Which one is not a pollutant normally?","choices":[{"text":"Hydrocarbons","value":"A"},{"text":"Carbon dioxide","value":"B"},{"text":"Carbon monoxide","value":"C"},{"text":"Sulphur dioxide","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":140300,"question":"Chief air pollutant which is likely to deplete ozone layer","choices":[{"text":"Suphure dioxide","value":"A"},{"text":"Carbon dioxide","value":"B"},{"text":"Carbon dioxide","value":"C"},{"text":"Nitrogen oxides and chloro flrorocarbons","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":140299,"question":"Atmosphere of big/metropolitan cities is polluted most by","choices":[{"text":"Automobile exhausts","value":"A"},{"text":"Pesticide residue","value":"B"},{"text":"Household waste","value":"C"},{"text":"Radio-active fall out","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":140298,"question":"Detergents are","choices":[{"text":"Synthetic products","value":"A"},{"text":"Natural products","value":"B"},{"text":"Both A and B","value":"C"},{"text":"None of the above","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":140297,"question":"In N.W.F.P the phosphate fertilizers are produced at","choices":[{"text":"D.I.Khan","value":"A"},{"text":"Haripur","value":"B"},{"text":"Nowshera","value":"C"},{"text":"Dargai","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":140296,"question":"Which of the following nitrogen fertilizer contain more nitrogen","choices":[{"text":"NaNO<sub>3</sub>","value":"A"},{"text":"KNO<sub>3</sub>","value":"B"},{"text":"NH<sub>4</sub>NO<sub>3</sub>","value":"C"},{"text":"Urea","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":140295,"question":"Natural fertilizer provides potassium in the form of K<sub>2</sub>O (potash)","choices":[{"text":"1.5 kg","value":"A"},{"text":"3 kg","value":"B"},{"text":"4.5 kg","value":"C"},{"text":"6.5 kg","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":140294,"question":"Natural fertilizer provides phosphorus to plants in the form of P<sub>2</sub>O<sub>5</sub>","choices":[{"text":"1.2 kg","value":"A"},{"text":"2.2 kg","value":"B"},{"text":"3.2 kg","value":"C"},{"text":"4 kg","value":"D"},{"value":"E"}],"correctAnswer":2}]