[{"id":40333,"question":"Which is unnecessary for purification of water for drink purposes:
","choices":[{"text":"coagulation
","value":"A"},{"text":"aeration
","value":"B"},{"text":"treatment with lodine
","value":"C"},{"text":"treatment with chlorine
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40332,"question":"Which one of the following is not a component of environment:
","choices":[{"text":"biosphere
","value":"A"},{"text":"stratosphere
","value":"B"},{"text":"hydrosphere
","value":"C"},{"text":"lithosphere
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40331,"question":"Which factor is helping to reduce the environmental pollution:
","choices":[{"text":"urbanization
","value":"A"},{"text":"industrialization
","value":"B"},{"text":"increases of plantation
","value":"C"},{"text":"rapid growth of population
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40330,"question":"A sing chlorine free radical can destroy how many ozone molecules:
","choices":[{"text":"10","value":"A"},{"text":"100","value":"B"},{"text":"1000","value":"C"},{"text":"10000","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40329,"question":"New3spapers can be recycled again and again by how many times?
","choices":[{"text":"5","value":"A"},{"text":"3","value":"B"},{"text":"2","value":"C"},{"text":"4","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40328,"question":"Fungicides re the pesticides which:
","choices":[{"text":"kill plants
","value":"A"},{"text":"kill herbs
","value":"B"},{"text":"kill insects
","value":"C"},{"text":"control the growth of fungus
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40327,"question":"What is the effect of polluted air on environment:
","choices":[{"text":"ozone
","value":"A"},{"text":"acid rain
","value":"B"},{"text":"global warming
","value":"C"},{"text":"smog
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40326,"question":"The gasses in the atmosphere are essential for sustaining life on earth; Thus oxygen is required for breathing, What for is carbon dioxide required?
","choices":[{"text":"to help plant to under go photosynthesis
","value":"A"},{"text":"to destroy nitrogen oxide form the atmosphere
","value":"B"},{"text":"to help to clean to atmosphere
","value":"C"},{"text":"to help in fixing of bacteria
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40325,"question":"In big/metropolitan cities, atmosphere is mostly polluted due to:
","choices":[{"text":"radioactive fall out
","value":"A"},{"text":"household waste
","value":"B"},{"text":"pesticide residue
","value":"C"},{"text":"automobile exhausts
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40324,"question":"The reason of acid rain is:
","choices":[{"text":"release of CO in excess by in complete combustion
","value":"A"},{"text":"excess release of NO2 and SO2 from burning of fossil fuels
","value":"B"},{"text":"Formation of NH3 in excess form industry and coal gas
","value":"C"},{"text":"Formation of excess CO2 due to combustion and respiration
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40323,"question":"Cyclone collector is used to reduce:
","choices":[{"text":"noise pollution
","value":"A"},{"text":"air pollution
","value":"B"},{"text":"water pollution
","value":"C"},{"text":"radioactive pollution
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40322,"question":"The pH range of the acid rain is:
","choices":[{"text":"6.5 __ 6
","value":"A"},{"text":"Less than 5
","value":"B"},{"text":"8 __ 7.5
","value":"C"},{"text":"7 __ 6.5
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40321,"question":"Proxy acetyl nitrat5e (PAN) is an irritant to human beings and it affects:
","choices":[{"text":"nose
","value":"A"},{"text":"stomach
","value":"B"},{"text":"eyes
","value":"C"},{"text":"ears
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40320,"question":"Ecosytem is a smaller unity of:
","choices":[{"text":"nydosphere
","value":"A"},{"text":"biosphere
","value":"B"},{"text":"lithosphere
","value":"C"},{"text":"atmosphere
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40319,"question":"The temperature in the incineration of industrial and hazardons waster process had a range:
","choices":[{"text":"950 to 1300°C
","value":"A"},{"text":"500 to 900°C
","value":"B"},{"text":"250 to 500°C
","value":"C"},{"text":"900 to 1000°C
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40318,"question":"Choose the correct statement:
","choices":[{"text":"SO2 affects the nucleus
","value":"A"},{"text":"SO2 affects plasmodesmate
","value":"B"},{"text":"SO2 affects cell wall
","value":"C"},{"text":"SO2 affects all membrane systems
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40317,"question":"Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases?
","choices":[{"text":"NO2","value":"A"},{"text":"SO2","value":"B"},{"text":"Hg
","value":"C"},{"text":"Pb
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40316,"question":"Which one of the following does not act as pollutant?
","choices":[{"text":"carbon monoxide
","value":"A"},{"text":"sulphur dioxide
","value":"B"},{"text":"hydrocarbons
","value":"C"},{"text":"carbon dioxide
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40315,"question":"Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of:
","choices":[{"text":"2 days
","value":"A"},{"text":"6 days
","value":"B"},{"text":"5 days
","value":"C"},{"text":"7 days
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40314,"question":"The main pollution leather tanneries in the waste water is due to the salt of:
","choices":[{"text":"chromium
","value":"A"},{"text":"copper
","value":"B"},{"text":"calcium
","value":"C"},{"text":"lead
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40313,"question":"Potable water is considered to be:
","choices":[{"text":"safe for human consumption
","value":"A"},{"text":"the ground water
","value":"B"},{"text":"the Surface water
","value":"C"},{"text":"now water is due to the salt of:
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40312,"question":"A solid nitrate fertilizer reacts with an alkali to produce a gas which turns damp pH paper blue:
","choices":[{"text":"NO3","value":"A"},{"text":"NHO3","value":"B"},{"text":"NH2O","value":"C"},{"text":"N2H4O3","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40311,"question":"The nitrogen present in some fertilizer helps plants:
","choices":[{"text":"to fight against diseases
","value":"A"},{"text":"to produce fat
","value":"B"},{"text":"to undergo photosynthesis
","value":"C"},{"text":"to produce protein
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40310,"question":"The fertilizer contains 33___35%n is:
","choices":[{"text":"ammonium nitrate
","value":"A"},{"text":"potassium nitrate
","value":"B"},{"text":"urea
","value":"C"},{"text":"ammonia
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40309,"question":"In Pakistan consumption per person is:
","choices":[{"text":"8kg
","value":"A"},{"text":"5kg
","value":"B"},{"text":"10kg
","value":"C"},{"text":"6kg
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40308,"question":"Hexamethylene reacts with _______ to prepare nylon 6,6
","choices":[{"text":"acetic acid
","value":"A"},{"text":"adipic acid
","value":"B"},{"text":"formic acid
","value":"C"},{"text":"none of above
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40307,"question":"Ketones are less reactive than aldehydes because:
","choices":[{"text":"alkyl groups electorn donation
","value":"A"},{"text":"steric hindrance is greater in ketone
","value":"B"},{"text":"both a and b
","value":"C"},{"text":"ketones are non-polar
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40306,"question":"When equal proportion of DH3_ l and C2H5 ___ l are treated with Na metal in preasence4 of dry ether, the number of possible hydrocarbons obtained will be:
","choices":[{"text":" 5","value":"A"},{"text":"4","value":"B"},{"text":"3","value":"C"},{"text":"2","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40305,"question":"The conversion of an halide of an alkene is an example:
","choices":[{"text":"addition reaction
","value":"A"},{"text":"substitution reaction
","value":"B"},{"text":"elimination reaction
","value":"C"},{"text":"oxidation reaction
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40304,"question":"The compound which does not form iodoform:
","choices":[{"text":"methyl alcohol
","value":"A"},{"text":"ethyl alcohol
","value":"B"},{"text":"acetone
","value":"C"},{"text":"acetaldehyde
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40303,"question":"Which of the following alkyl halides shows higher reactivity?
","choices":[{"text":"R __ F
","value":"A"},{"text":"R __ CI
","value":"B"},{"text":"R __ Br
","value":"C"},{"text":"R __ I
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40302,"question":"Which three element are needed for the health growth of plants:
","choices":[{"text":"S,S,P
","value":"A"},{"text":"N,Ca,P","value":"B"},{"text":"N,P,K
","value":"C"},{"text":"N,K,C
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40301,"question":"Natural fertilizers are materials derived form:
","choices":[{"text":"plants
","value":"A"},{"text":"animals only
","value":"B"},{"text":"both plant and animals
","value":"C"},{"text":"none of all
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40300,"question":"How many zones through which the charge passes in a rotary kiln?
","choices":[{"text":"4","value":"A"},{"text":"3","value":"B"},{"text":"2","value":"C"},{"text":"5","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40299,"question":"The substance added to the soil to provide one or more nutrient elements which are necessary plant growth are known as:
","choices":[{"text":"Harmones
","value":"A"},{"text":"minerals
","value":"B"},{"text":"fertilizers
","value":"C"},{"text":"none of above
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40298,"question":"Which is not a calcareous material?
","choices":[{"text":"line
","value":"A"},{"text":"clay
","value":"B"},{"text":"marble
","value":"C"},{"text":"marine shell
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40297,"question":"At present the number or cement factories in Pakistan are:
","choices":[{"text":"20","value":"A"},{"text":"22","value":"B"},{"text":"25","value":"C"},{"text":"30","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40296,"question":"Micro nutrients are required in quality ranging from:
","choices":[{"text":"4g - 40g
","value":"A"},{"text":"6g - 200g
","value":"B"},{"text":"6dg - 200kg
","value":"C"},{"text":"4kg - 40kg
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40295,"question":"The substances added in paints for improving the mechanical properties is called:
","choices":[{"text":"pigmein
","value":"A"},{"text":"filter
","value":"B"},{"text":"stabilizer
","value":"C"},{"text":"binder
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40294,"question":"The word paper is derived form the name of which reedy plant:
","choices":[{"text":"rose
","value":"A"},{"text":"sun flower
","value":"B"},{"text":"papyrus
","value":"C"},{"text":"water hyacinth
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40293,"question":"Which of the following are thermoplastic materials?
","choices":[{"text":"PVC (poly vinyl chloride)
","value":"A"},{"text":"polystryences
","value":"B"},{"text":"polyethylene
","value":"C"},{"text":"all above
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40292,"question":"Which woody raw material is used for the manufacture of paper pulp?
","choices":[{"text":"cotton
","value":"A"},{"text":"bugases
","value":"B"},{"text":"poplar
","value":"C"},{"text":"rice straw
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40291,"question":"Substances that tend to decrease the activity of enzymes are called:
","choices":[{"text":"coenzymes
","value":"A"},{"text":"activators
","value":"B"},{"text":"inhibitors
","value":"C"},{"text":"apoenzyme
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40290,"question":"How many fertilizer plants are now in Pakistan?
","choices":[{"text":"20","value":"A"},{"text":"14","value":"B"},{"text":"12","value":"C"},{"text":"10","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40289,"question":"Which one is nitrogen fertilizer among the following:
","choices":[{"text":"calcium sulphate
","value":"A"},{"text":"urea
","value":"B"},{"text":"magnesium carbonate
","value":"C"},{"text":"potassium phosphate
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40288,"question":"Choose the crop for which ammonium nitrate is not used:
","choices":[{"text":"paddy rise
","value":"A"},{"text":"cotton
","value":"B"},{"text":"wheat
","value":"C"},{"text":"sugar cane
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40287,"question":"Select the name of ready plant from which word ''Paper'' is derived:
","choices":[{"text":"sun flower
","value":"A"},{"text":"papyrus
","value":"B"},{"text":"water hyacinth
","value":"C"},{"text":"rose
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40286,"question":"Silk is the example of:
","choices":[{"text":"mineral fiber
","value":"A"},{"text":"vegetable fiber
","value":"B"},{"text":"animal fiber
","value":"C"},{"text":"none of above
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40285,"question":"What element is not essential for the growth of plants and not required in the fertilizers?
","choices":[{"text":"nitrogen
","value":"A"},{"text":"potassium
","value":"B"},{"text":"phosphorus
","value":"C"},{"text":"barium
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40284,"question":"In FWFP 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":40283,"question":"Which of these the most widely used nitrogen fertilizer in Pakistan?
","choices":[{"text":"urea
","value":"A"},{"text":"ammonium nitrate
","value":"B"},{"text":"ammonium sulphate
","value":"C"},{"text":"ammonium chloride
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40282,"question":"Ammonia gas used directly as a fertilizer injected into the soil at a depth of about:
","choices":[{"text":"two inches
","value":"A"},{"text":"three inches
","value":"B"},{"text":"five inches
","value":"C"},{"text":"six inches
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40281,"question":"Surfactants are organic compounds used in detergents which reduce the:
","choices":[{"text":"viscosity of water
","value":"A"},{"text":"surface tension of water
","value":"B"},{"text":"boiling points of water
","value":"C"},{"text":"surface ability of water
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40280,"question":"The %age composition of the auxiliary agent in a detergent is:
","choices":[{"text":"10%","value":"A"},{"text":"30%","value":"B"},{"text":"50%","value":"C"},{"text":"70%","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40279,"question":"Detergents are:
","choices":[{"text":"synthetic products
","value":"A"},{"text":"natural product
","value":"B"},{"text":"both a and b
","value":"C"},{"text":"none of the above
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40278,"question":"The %age of nitrogen in urea is:
","choices":[{"text":"46","value":"A"},{"text":"60","value":"B"},{"text":"70","value":"C"},{"text":"80","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40277,"question":"The substance used in the soil to provide element.Which are essential for plant growth are known as:
","choices":[{"text":"manures
","value":"A"},{"text":"fertilizers
","value":"B"},{"text":"pesticides
","value":"C"},{"text":"additive
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40276,"question":"The elements like calcium nitrogen and phosphorus added into the soil in large amounts are called:
","choices":[{"text":"basic elements
","value":"A"},{"text":"trace elements
","value":"B"},{"text":"additives
","value":"C"},{"text":"nutrient element
","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40275,"question":"Which is the chemical formula of calcium super phosphate:
","choices":[{"text":"CaH2PO4","value":"A"},{"text":"CaHPO4","value":"B"},{"text":"Ca(H2PO4)2","value":"C"},{"text":"none of above
","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40274,"question":"Silk is an example of:
","choices":[{"text":"animal fiber
","value":"A"},{"text":"vegetable fiber
","value":"B"},{"text":"mineral fiber
","value":"C"},{"text":"none of all
","value":"D"},{"value":"E"}],"correctAnswer":1}]