[{"id":173930,"question":"Which is not a poisonous gas?","choices":[{"text":"Ozone","value":"A"},{"text":"Chlorine","value":"B"},{"text":"Carbon di oxide","value":"C"},{"text":"All of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":173929,"question":"The gas used by animals to perform respiration.","choices":[{"text":"O<sub>2</sub>","value":"A"},{"text":"N<sub>2</sub>","value":"B"},{"text":"SO<sub>2</sub>","value":"C"},{"text":"Cl<sub>2</sub>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":173928,"question":"The gas use by plants to perform photosynthesis.","choices":[{"text":"O<sub>2</sub>","value":"A"},{"text":"CO<sub>2</sub>","value":"B"},{"text":"N<sub>2</sub>","value":"C"},{"text":"CO","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173927,"question":"Which is not an air pollutant?","choices":[{"text":"CO<sub>2</sub>","value":"A"},{"text":"CO","value":"B"},{"text":"SO<sub>2</sub>","value":"C"},{"text":"NH<sub>3</sub>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":173926,"question":"Ozone depletion was first noticed is.","choices":[{"text":"1970's","value":"A"},{"text":"1980's","value":"B"},{"text":"1990's","value":"C"},{"text":"1960's","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173925,"question":"The region in which ozone layere depletes is called.","choices":[{"text":"Ozone hole","value":"A"},{"text":"Black hole","value":"B"},{"text":"Both of them","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":173924,"question":"Which gas is in involved in ozone depletion?","choices":[{"text":"Nitrogen","value":"A"},{"text":"CFC's","value":"B"},{"text":"Chlorine","value":"C"},{"text":"All of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173923,"question":"Ultraviolet radiations can causes.","choices":[{"text":"Hepatitis","value":"A"},{"text":"Asthma","value":"B"},{"text":"Skin cancer","value":"C"},{"text":"Night blindness","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":173922,"question":"Ozone is an allotropic form of","choices":[{"text":"Carbon","value":"A"},{"text":"Oxygen","value":"B"},{"text":"Sulphur","value":"C"},{"text":"Phosphorous","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173921,"question":"High concentration of which metal clogs the fish gills.","choices":[{"text":"Zinc","value":"A"},{"text":"Aluminium","value":"B"},{"text":"Sodium","value":"C"},{"text":"Copper","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173920,"question":"The pH of acid rain.","choices":[{"text":"2","value":"A"},{"text":"3","value":"B"},{"text":"4","value":"C"},{"text":"5","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":173919,"question":"The pH of water containing CO<sub>2</sub> is","choices":[{"text":"4-6","value":"A"},{"text":"5.6-6","value":"B"},{"text":"6-7","value":"C"},{"text":"7-8","value":"D"},{"value":"E"}],"correctAnswer":2}]