[{"id":131109,"question":"When chlorofluoro carbon are subjected to U.V they form","choices":[{"text":"Cations","value":"A"},{"text":"Aninons","value":"B"},{"text":"Free radicals","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131108,"question":"Ozone in most of the tropical regions acts as a pollutant and cause","choices":[{"text":"damages to eyes","value":"A"},{"text":"aggravates asthma","value":"B"},{"text":"chest discomfort","value":"C"},{"text":"all of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131107,"question":"The normal amount of overhead ozone is about","choices":[{"text":"250 Du","value":"A"},{"text":"300 DU","value":"B"},{"text":"350 DU","value":"C"},{"text":"400 DU","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131106,"question":"The amount of Si in the lithosphere is about","choices":[{"text":"27.72%","value":"A"},{"text":"30.35%","value":"B"},{"text":"35.30%","value":"C"},{"text":"40.21%<br>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":131105,"question":"The amount of oxygen in the lithosphere is about","choices":[{"text":"35.50%","value":"A"},{"text":"40.60%","value":"B"},{"text":"46.60%","value":"C"},{"text":"50.50%","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131104,"question":"In the atosphere, CO<sub>2</sub>is about","choices":[{"text":"0.01%","value":"A"},{"text":"0.03%","value":"B"},{"text":"0.05%","value":"C"},{"text":"0.09%","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":131103,"question":"In the atmosphere, O<sub>2</sub>is about","choices":[{"text":"10%","value":"A"},{"text":"15%","value":"B"},{"text":"21%","value":"C"},{"text":"25%","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131102,"question":"The film forming components of paints are","choices":[{"text":"resins","value":"A"},{"text":"thinners","value":"B"},{"text":"pigments","value":"C"},{"text":"driers","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":131101,"question":"Hydrocarbons, SO<sub>2</sub>, CO, NH<sub>3</sub>nitrogen oxides and compounds of fluorine are called","choices":[{"text":"Primary pollutant","value":"A"},{"text":"Secondary pollutant","value":"B"},{"text":"Tertiary pollutant","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":131100,"question":"Which gases are produced from landfills?","choices":[{"text":"NH<sub>3</sub>","value":"A"},{"text":"H<sub>2</sub>S","value":"B"},{"text":"N<sub>2</sub>","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131099,"question":"In Purification of potable water the coagulant used is","choices":[{"text":"nickel sulpahte","value":"A"},{"text":"copper sulpahte","value":"B"},{"text":"barium sulphate","value":"C"},{"text":"alum","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131098,"question":"Which not a method for solid waste management&gt;","choices":[{"text":"Landfill","value":"A"},{"text":"Incinerating","value":"B"},{"text":"Recycling","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131097,"question":"Ecosystem is a smaller unit of","choices":[{"text":"Hydrosphere","value":"A"},{"text":"Lithosphere","value":"B"},{"text":"Biosphere","value":"C"},{"text":"Atmosphere","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131096,"question":"A single chlorine 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":131095,"question":"Which heavy metals do not have any safe limits","choices":[{"text":"As","value":"A"},{"text":"Hg","value":"B"},{"text":"Cr","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131094,"question":"SO<sub>2</sub>makes ___________ acid rains","choices":[{"text":"carbonic acid","value":"A"},{"text":"Sulfuric","value":"B"},{"text":"Nitric acid","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131093,"question":"The pH rain of acid rain is","choices":[{"text":"8 - 7","value":"A"},{"text":"7 - 6.5","value":"B"},{"text":"6.5 - 6","value":"C"},{"text":"less than 5","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131092,"question":"Which of the following waster material is not recycled for use again","choices":[{"text":"paper","value":"A"},{"text":"plastic","value":"B"},{"text":"hides of animals","value":"C"},{"text":"glass","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131091,"question":"In incinerating the waste is burnt at","choices":[{"text":"1000<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°C</span>","value":"A"},{"text":"100<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°C</span>","value":"B"},{"text":"2000<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°C</span>","value":"C"},{"text":"1500<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°C</span>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":131090,"question":"Chromium (VI) is highly toxic and can cause","choices":[{"text":"Blindness","value":"A"},{"text":"Cancer","value":"B"},{"text":"Liver problems","value":"C"},{"text":"Blood problems","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":131089,"question":"Industrial effluents have toxic synthetic organic compounds as well as heavy metals like","choices":[{"text":"Pb","value":"A"},{"text":"Cr","value":"B"},{"text":"Hg","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131088,"question":"Which step is unnecessary for purification of water for drinking purposes","choices":[{"text":"aeration","value":"A"},{"text":"coagulation","value":"B"},{"text":"treatment with chlorine","value":"C"},{"text":"treatment with iodine","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131087,"question":"Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water","choices":[{"text":"low value","value":"A"},{"text":"higher value","value":"B"},{"text":"both values","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":131086,"question":"Exposure to CO results in","choices":[{"text":"Headche","value":"A"},{"text":"Fatigue","value":"B"},{"text":"Unconsciousness","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131085,"question":"Which gas is not a constituent of atmosphere?","choices":[{"text":"Xe","value":"A"},{"text":"O<sub>3</sub>","value":"B"},{"text":"H<sub>2</sub>","value":"C"},{"text":"F<sub>2</sub>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131084,"question":"Surface and ground water sources are contaminated by various human activities which of the followings is not a human activity that causes contamination in fresh water","choices":[{"text":"live stock waste","value":"A"},{"text":"oil leaks and spills","value":"B"},{"text":"disposal of industrial effluents","value":"C"},{"text":"rain","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131083,"question":"CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy","choices":[{"text":"10,000","value":"A"},{"text":"20,000","value":"B"},{"text":"100,000","value":"C"},{"text":"50,000","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131082,"question":"Which is not the affect of polluted air on environment","choices":[{"text":"acid rain","value":"A"},{"text":"smog","value":"B"},{"text":"ozone","value":"C"},{"text":"global warming","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131081,"question":"Which one of the following is not air pollutant gas","choices":[{"text":"CO","value":"A"},{"text":"CO<sub>2</sub>","value":"B"},{"text":"NO","value":"C"},{"text":"SO<sub>2</sub>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":131080,"question":"Which factor is helping to reduce the environment pollution","choices":[{"text":"rapid growth population","value":"A"},{"text":"urbanization","value":"B"},{"text":"idustrialization","value":"C"},{"text":"increase of plantation","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131079,"question":"A pollutant affects","choices":[{"text":"Human affects","value":"A"},{"text":"Quality of life","value":"B"},{"text":"Functioning of ecosystem","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131078,"question":"The 95.5% mass of Lithoshone is made of 11 elements i,e O<sub>2</sub>, Si, Al, Fe, Ca, Na, K, Mg, Ti, H<sub>2</sub>and P. Which element is present in trace amount","choices":[{"text":"iodine","value":"A"},{"text":"bromine","value":"B"},{"text":"lead","value":"C"},{"text":"carbon","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131077,"question":"The region of earth capable of supporting life is","choices":[{"text":"Hydrosphere","value":"A"},{"text":"Lithosphere","value":"B"},{"text":"Biosphere","value":"C"},{"text":"Atmosphere","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131076,"question":"Oceans cove ____________ percent of the surface of the earth","choices":[{"text":"60","value":"A"},{"text":"70","value":"B"},{"text":"80","value":"C"},{"text":"97","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131075,"question":"The % of CO<sub>2</sub>in the atmosphere is","choices":[{"text":"3.0%","value":"A"},{"text":"0.03%","value":"B"},{"text":"0.3%","value":"C"},{"text":"0.5%","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":131074,"question":"Which is not a component of environment?","choices":[{"text":"Biosphere","value":"A"},{"text":"Lithosphere","value":"B"},{"text":"Hydrosphere","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131072,"question":"The trade name of polytereafluoroethylene (PTFE) is","choices":[{"text":"Teflon","value":"A"},{"text":"PVC","value":"B"},{"text":"terelene","value":"C"},{"text":"polyester","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":131071,"question":"The main source of natural fibre is","choices":[{"text":"animal fibres","value":"A"},{"text":"vegetables fibres","value":"B"},{"text":"mineral fibres","value":"C"},{"text":"all of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131070,"question":"The fibre which is made from vinylidine chloride polymer is called","choices":[{"text":"rayon fibre","value":"A"},{"text":"azlon fibre","value":"B"},{"text":"acetate fibre","value":"C"},{"text":"all of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131069,"question":"Formation of PVC form vinyl chloride is an example of","choices":[{"text":"substitution reaction","value":"A"},{"text":"addition polymerization","value":"B"},{"text":"condensational reaction","value":"C"},{"text":"Aldol condensation","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":131068,"question":"Which one of the following substances is a synthetic polyester?","choices":[{"text":"cotton","value":"A"},{"text":"nylon","value":"B"},{"text":"rayon","value":"C"},{"text":"terylene","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131067,"question":"The formation of PVC from vinyl chloride is an example of","choices":[{"text":"subtsitution reaction","value":"A"},{"text":"addition polymerization","value":"B"},{"text":"condensation polymerization","value":"C"},{"text":"condensation reaction","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":131066,"question":"A chemical inert and heat resistant plastic, that is made from tetrafluoroethylene, is called","choices":[{"text":"teflon","value":"A"},{"text":"PVC","value":"B"},{"text":"Bakelite","value":"C"},{"text":"polyamide","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":131065,"question":"The basic difference between synthetic and natural fertilizer is in their","choices":[{"text":"raw material","value":"A"},{"text":"crop application","value":"B"},{"text":"usage","value":"C"},{"text":"shapes","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":131064,"question":"Terylen fibre is made by reaction of terephthalic acid with","choices":[{"text":"ethylene","value":"A"},{"text":"ethylene glycol","value":"B"},{"text":"glycol","value":"C"},{"text":"terylene","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":131063,"question":"Nylon 6 6 is prepared by the reaction of hexamethylene with","choices":[{"text":"formic acid","value":"A"},{"text":"acetic acid","value":"B"},{"text":"adipic acid","value":"C"},{"text":"none of 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which consist of three components. Which one is not the component in the nucleotide of an RNA","choices":[{"text":"D-Ribose","value":"A"},{"text":"wracil base","value":"B"},{"text":"prosphate group","value":"C"},{"text":"thyamine base","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131054,"question":"DNA is a polynucleic acid. The monomer is known as a nucleotide. What is not the component of the nuleotide","choices":[{"text":"Phosphate group","value":"A"},{"text":"Deoxy ribose sugar","value":"B"},{"text":"Uracil base","value":"C"},{"text":"Adenine base","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131053,"question":"Enzymes catalyse all biological reactions occuring in the cell. What is true about an enzyme?","choices":[{"text":"Enzyme is a small molecule","value":"A"},{"text":"Enzyme is acidic in nature","value":"B"},{"text":"Enzyme is a protein","value":"C"},{"text":"Enzyme is a lipid","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131052,"question":"There are 20 amino acids found in protein which is not the property of these amino acids","choices":[{"text":"They are all alpha-amino acids","value":"A"},{"text":"They are all optically active","value":"B"},{"text":"They have high decomposition point","value":"C"},{"text":"They are water soluble","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":131051,"question":"Which functional group is present in glycerol tristearate","choices":[{"text":"Carboxylic acid","value":"A"},{"text":"Alcohol","value":"B"},{"text":"Aldehyde","value":"C"},{"text":"Ester","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":131050,"question":"A nucleoside may be","choices":[{"text":"Ribonucleoside","value":"A"},{"text":"Deoxyribonucleoside","value":"B"},{"text":"Both a and b","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":131049,"question":"The proteins which are derived by conjugated proteins are called as","choices":[{"text":"Simple protein","value":"A"},{"text":"Complex protein","value":"B"},{"text":"Derived protein","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":3}]