[{"id":173894,"question":"Global warming causes rising of the sea level. The cause of global warming is.","choices":[{"text":"CO<sub>2</sub> gas.","value":"A"},{"text":"SO<sub>2</sub>gas.","value":"B"},{"text":"NO<sub>2</sub>gases.","value":"C"},{"text":"O<sub>3</sub>gas.","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":173893,"question":"Infrared radiations emitted by the Earth are absorbed by.","choices":[{"text":"CO<sub>2</sub> and H<sub>2</sub>O","value":"A"},{"text":"N<sub>2</sub> and O<sub>2</sub>","value":"B"},{"text":"CO<sub>2</sub>and N<sub>2</sub>","value":"C"},{"text":"O<sub>2</sub>and CO<sub>2</sub>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":173892,"question":"Iron and steel structure are damaged by.","choices":[{"text":"Carbon monoxide","value":"A"},{"text":"Sulphur dioxide","value":"B"},{"text":"Methane","value":"C"},{"text":"Carbon dioxide","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173891,"question":"Which one of the following is not an air pollutants?","choices":[{"text":"Nitrogen","value":"A"},{"text":"Carbon dioxide","value":"B"},{"text":"Nitrogen oxide","value":"C"},{"text":"Ozone","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":173890,"question":"Ozone is beneficial for us as it","choices":[{"text":"Absorb infrared radiation.","value":"A"},{"text":"Absorb Ultraviolet radiations.","value":"B"},{"text":"Absorb Chlorofluorocarbons","value":"C"},{"text":"Absorb Air pollulant","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173889,"question":"Acid rain affects the aquatic life by clogging fish gills because of:","choices":[{"text":"Lead metal","value":"A"},{"text":"Chromium metal","value":"B"},{"text":"Mercury metal","value":"C"},{"text":"Aluminium metal","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":173888,"question":"Building are being damaged by acid rain because it attacks.","choices":[{"text":"Calcium sulphate","value":"A"},{"text":"Calcium nitrate","value":"B"},{"text":"Calcium carbonate","value":"C"},{"text":"Calcium oxalate","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":173887,"question":"Normally rain water is weakly acidic because of.","choices":[{"text":"SO<sub>3</sub> gas.","value":"A"},{"text":"CO<sub>2</sub>gas.","value":"B"},{"text":"SO<sub>2</sub>gas.","value":"C"},{"text":"NO<sub>2</sub>gas.","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173886,"question":"Which one of the following is not a greenhouse Effect?","choices":[{"text":"Increasing atmosphere temperature.","value":"A"},{"text":"Increasing food chains","value":"B"},{"text":"increasing flood risks","value":"C"},{"text":"Increasing sea-level","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173885,"question":"The Earth's atmosphere is getting hotter because of.","choices":[{"text":"Increasing concentration of CO","value":"A"},{"text":"Increasing concentration of CO<sub>2</sub>","value":"B"},{"text":"Increasing concentration of O<sub>3</sub>","value":"C"},{"text":"Increasing concentration of SO<sub>2</sub>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173884,"question":"A group of gases that maintains temperature of atmosphere is.","choices":[{"text":"Carbon dioxide and water vapours","value":"A"},{"text":"Nitrogen and carbon dioxide","value":"B"},{"text":"Thermosphere","value":"C"},{"text":"Troposphere","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":173883,"question":"Just above the Earth's surface is","choices":[{"text":"Mesosphere","value":"A"},{"text":"Stratosphere","value":"B"},{"text":"Theremosphere","value":"C"},{"text":"Troposphere","value":"D"},{"value":"E"}],"correctAnswer":4}]