[{"id":197493,"question":"The biggest source of acid rain is the oxide of.","choices":[{"text":"N","value":"A"},{"text":"S","value":"B"},{"text":"O","value":"C"},{"text":"C","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197492,"question":"Which one of the following is an example of co-polymer?","choices":[{"text":"Polyamide","value":"A"},{"text":"Polystyrene","value":"B"},{"text":"Polyvinyl acetate","value":"C"},{"text":"Polyvinyl chloride","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197491,"question":"Out of these which nitrogen base is NOT present in DNA?","choices":[{"text":"Adenine","value":"A"},{"text":"Guanine","value":"B"},{"text":"Uracil","value":"C"},{"text":"Thymine","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197490,"question":"Haemoglobin is a","choices":[{"text":"Genetic protein","value":"A"},{"text":"Building protein","value":"B"},{"text":"Transport protein","value":"C"},{"text":"Structural protein","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197489,"question":"Polymide is formed due to the condensation od hexane-dioic acid with","choices":[{"text":"Hexane-1, 5- diamine","value":"A"},{"text":"Hexane-1, 6 -diamine","value":"B"},{"text":"Hexane-1, 4- diamine","value":"C"},{"text":"Hexane-2, 5- diamine","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197488,"question":"One metabolite that fits on the enzyme surface and is converted to products is called.","choices":[{"text":"Co-factor","value":"A"},{"text":"Prosthetic group","value":"B"},{"text":"Isoenzyme","value":"C"},{"text":"Substrate","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197487,"question":"Which one of the following amino acids is basic in nature?","choices":[{"text":"Glycine","value":"A"},{"text":"Alanine","value":"B"},{"text":"Lysine","value":"C"},{"text":"Glutamic acid","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197486,"question":"Carboxylic acids are rather hard to reduce, which powerful reducing agent can be used to convert them to the corresponding primary alcohol.","choices":[{"text":"H<sub>2</sub>SO<sub>4</sub>/MgSO<sub>4</sub>","value":"A"},{"text":"V<sub>2</sub>O<sub>5</sub>","value":"B"},{"text":"LiAl H<sub>4</sub>","value":"C"},{"text":"K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>/H<sub>2</sub>SO<sub>4</sub>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197485,"question":"Ka values of few organic acids are given.<div>Acid                        Ka value</div><div>CH<sub>3</sub>COOH                   1.85 x 10<sup>-5</sup></div><div>CCl<sub>2</sub>COOH                  2.3 x 10<sup>-2</sup></div><div>CHCl<sub>2</sub> COOH                5.0 x 10<sup>-3</sup></div><div>CH<sub>2</sub>OCOOH                 1.3 x 10<sup>-3</sup></div><div>The order of acid strength is.</div>","choices":[{"text":"CCl<sub>2</sub>COOH &gt; CHCl<sub>2</sub> COOH &gt; CH<sub>2</sub>COOH . CH<sub>2</sub>COOH","value":"A"},{"text":"CH<sub>3</sub> COOH &gt; CHCl<sub>2</sub> COOH &gt; CCl<sub>2</sub> COOH &gt; CH<sub>2</sub>ClCOOH","value":"B"},{"text":"CHCl<sub>2</sub> COOH &gt; CH<sub>3</sub>COOH &gt; CCl<sub>3</sub>COOH &gt; CH<sub>2</sub>CLCOOH","value":"C"},{"text":"CCl<sub>2</sub>COOH &gt; CH<sub>3</sub>COOH &gt; CHCl<sub>2</sub> COOH . CH<sub>2</sub>ClCOOH","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197484,"question":"An organic acid 'z' reacts separately with sodium bicarbonate, sodium hydroxide and sodium carbonate. Which one of the following represent the structure of 'z'?","choices":[{"text":"HCOOC2H5","value":"A"},{"text":"CH3-CH=CH2","value":"B"},{"text":"CH3CH2OH","value":"C"},{"text":"H3C-CH2-COOH","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197483,"question":"Both aldehydes and ketones are planer to the neighborhoods of carbonyl (c=o) group. Which one of the following bonds is distorted towards the oxygen atoms.","choices":[{"text":"n-bond of C and O","value":"A"},{"text":"Sigma bond of C and H","value":"B"},{"text":"Sigma bond of C and O","value":"C"},{"text":"Sigma bond of C and C","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197482,"question":"Which one of the following is also called silver mirror test?","choices":[{"text":"Fehlinig's solution test","value":"A"},{"text":"Iodoform test","value":"B"},{"text":"Tollen's reagent","value":"C"},{"text":"Benedict's solution tests","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197481,"question":"To produce absolute alcohol (100%) from rectified spirit (95.6%) alcohol), the remaining 4.4 % water must be removed by a drying agent such as.","choices":[{"text":"Calcium oxide","value":"A"},{"text":"Calcium chloride","value":"B"},{"text":"Calcium carbonate","value":"C"},{"text":"Carbon mono oxide","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197480,"question":"How will you distinguish between methanol and ethanol?","choices":[{"text":"By Lucas test","value":"A"},{"text":"By silver mirror test","value":"B"},{"text":"By oxidation","value":"C"},{"text":"By Iodoform test","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197479,"question":"Which one of the following is NOT able to denature the ethanol?","choices":[{"text":"Methanol","value":"A"},{"text":"Lactic Acid","value":"B"},{"text":"Pyridine","value":"C"},{"text":"Acetone","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197478,"question":"Which one of the following was uses as one of the earliest antiseptic and disinfectant?","choices":[{"text":"Phenol","value":"A"},{"text":"Ether","value":"B"},{"text":"Ethanol","value":"C"},{"text":"Methanol","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197477,"question":"Order of reactivity of alkenes with hydrogen halide is.","choices":[{"text":"HBr &gt; HI &gt; HCl","value":"A"},{"text":"HI &gt;HBr&gt;Hf","value":"B"},{"text":"Hf &gt; HI&gt;HCl","value":"C"},{"text":"HI &gt;HBr&gt;HCl","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197476,"question":"What is the percentage of nitrogen in NH<sub>3</sub>NO<sub>3</sub>?","choices":[{"text":"65%","value":"A"},{"text":"35%","value":"B"},{"text":"20%","value":"C"},{"text":"58%","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197475,"question":"Urea is the most widely used nitrogen fertilizers in Pakistan. Its composition is","choices":[{"text":"NH<sub>2</sub>CO","value":"A"},{"text":"N<sub>2</sub>H<sub>5</sub>CO<sub>2</sub>","value":"B"},{"text":"N<sub>2</sub>H<sub>4</sub>CO<sub>2</sub>","value":"C"},{"text":"N<sub>2</sub>H<sub>4</sub>CO","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197474,"question":"About 80% of ammonia is used for the production of","choices":[{"text":"Explosives","value":"A"},{"text":"Fertilizers","value":"B"},{"text":"Nylon","value":"C"},{"text":"Polymers","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197473,"question":"Electronic configuration of Gold [Au79] is","choices":[{"text":"[Xe] 4f<sup>14</sup>, 5d<sup>10</sup>, 6s<sup>1</sup>","value":"A"},{"text":"[Xe] 4f<sup>10</sup>, 5d<sup>10</sup>, 6s<sup>2</sup>","value":"B"},{"text":"[Xe] 4f<sup>14</sup>, 5d<sup>9</sup>, 6s<sup>2</sup>","value":"C"},{"text":"[Xe] 4f<sup>14</sup>, 5d<sup>10</sup>, 6s<sup>2</sup>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197472,"question":"[Ti(H<sub>2</sub>O)<sub>6</sub>]<sup>+3</sup> transmits","choices":[{"text":"Yellow and Red light","value":"A"},{"text":"Yellow and blue light","value":"B"},{"text":"Red and white light","value":"C"},{"text":"Red and blue light","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197471,"question":"Which one of the following gases is used as mixture for breathing by sea divers?","choices":[{"text":"Oxygen and nitrogen","value":"A"},{"text":"Nitrogen and Helium","value":"B"},{"text":"Helium and oxygen","value":"C"},{"text":"Helium and Hydrogen","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197470,"question":"Keeping in view the size of atoms, which order is correct?","choices":[{"text":"N&gt;C","value":"A"},{"text":"P &gt; Si","value":"B"},{"text":"Ar &gt; Cl","value":"C"},{"text":"Li &gt; Be","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197469,"question":"Which one of the following will have the smallest radius?","choices":[{"text":"Al<sup>+3</sup>","value":"A"},{"text":"Si<sup>+4</sup>","value":"B"},{"text":"Mg<sup>+2</sup>","value":"C"},{"text":"Na<sup>+2</sup>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197468,"question":"When the change in concentration is 6 x 10-4 mol dm-3 and time for that change is 10 seconds the rate of reaction will be","choices":[{"text":"6 x 10<sup>-3</sup> mol dm<sup>-3</sup> sec<sup>-1</sup>","value":"A"},{"text":"6 x 10<sup>-4</sup> mol dm<sup>-3</sup> se<sup>-1</sup>","value":"B"},{"text":"6 x 10<sup>-2</sup> mol dm<sup>-3</sup> sec<sup>-1</sup>","value":"C"},{"text":"6 x 10<sup>-5</sup> mol dm<sup>-3</sup> sec<sup>-1</sup>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197467,"question":"The half life of N2O5 at 0 oC is 24 minutes. How long will it take for sample of N2O5 to decay to 25% of its original concentration?","choices":[{"text":"24 minutes","value":"A"},{"text":"72 minutes","value":"B"},{"text":"120 minutes","value":"C"},{"text":"40 minutes","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197466,"question":"What is the correct relation between pH and pK?","choices":[{"text":"pH = PKa + log [acid/base]","value":"A"},{"text":"pH = Pka -log [acid/base]","value":"B"},{"text":"pH = pKa - log [base/acid]","value":"C"},{"text":"pH = pka -log [base/acid]","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197465,"question":"Given solution contains 16.0 g of CH3O, 92.0 G OF C2H5OH and 36 g of water. Which statement about mole fraction of the components is true?","choices":[{"text":"Mole fraction of CH3OH is highest among all components","value":"A"},{"text":"Mole fraction of C2H5OH and H2O is the same","value":"B"},{"text":"Mole fraction of CH3OH and C2H5OH is ame","value":"C"},{"text":"Mole fraction of H2O is the lowest among all","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197464,"question":"10.0 gram of glucose are dissolved in water to make 100 cm3 of its solution, its molarity is.","choices":[{"text":"0.55","value":"A"},{"text":"0.1","value":"B"},{"text":"10","value":"C"},{"text":"1","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197463,"question":"There are four orbitals s,p,d and f , which order is correct with respect to the increasing energy of the orbitals?","choices":[{"text":"4s &lt;4p&lt;4d&lt;4f","value":"A"},{"text":"4s&lt;4f&lt;4p&lt;4d","value":"B"},{"text":"4p&lt;4s&lt;4f&lt;4d","value":"C"},{"text":"4f&lt;4s&lt;4d&lt;4p","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197462,"question":"Which one of the following pairs has the same electronic configuration s possessed by neon (Ne-10)?","choices":[{"text":"Na+, Cl-","value":"A"},{"text":"K+ ,Cl-","value":"B"},{"text":"Na+, Mg2+","value":"C"},{"text":"Na+, F-","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197461,"question":"If the volume of a gas collected at a temperature of 600 <sup>o</sup>C and pressure of 1.05 x 10<sup>5</sup>Nm-2 is 60 dm3, what would be the volume of gas at STP.(P =1.01 X 103 Nm-2,T= 273 K)?","choices":[{"text":"25 Cm3","value":"A"},{"text":"75 cm3","value":"B"},{"text":"100 cm3","value":"C"},{"text":"51 cm3","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197460,"question":"With the help of spectral data given calculate the mass of Neon and encircle the best option.","choices":[{"text":"22.18 amu","value":"A"},{"text":"21,18 amu","value":"B"},{"text":"20.18 amu","value":"C"},{"text":"22.20 amu","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197459,"question":"How many moles of sodium are present in 0.1 g of sodium?","choices":[{"text":"4.3 x 10-1","value":"A"},{"text":"4.03 x 10-1","value":"B"},{"text":"4.01 x 10-2","value":"C"},{"text":"4.3 x 10-2","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197458,"question":"The gas which is mainly produced in landfills from the waste is.","choices":[{"text":"CH4","value":"A"},{"text":"CO2","value":"B"},{"text":"SO2","value":"C"},{"text":"Cl2","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197457,"question":"Ozone concentration is measured in","choices":[{"text":"Debye units","value":"A"},{"text":"Dupont units","value":"B"},{"text":"Debacle units","value":"C"},{"text":"Dobson units","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197456,"question":"In laboratory experiment an unknown compound was added in test tube containing iodine, the colour became intense blue, what could be the unknown compound.","choices":[{"text":"Cellulose","value":"A"},{"text":"Raffinose","value":"B"},{"text":"Ribose","value":"C"},{"text":"Starch","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197455,"question":"In the woody parts of trees, the % age of cellulose is.","choices":[{"text":"50%","value":"A"},{"text":"10%","value":"B"},{"text":"30%","value":"C"},{"text":"100%","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197454,"question":"Which one of the following nitrogen base is NOT present in DNA.","choices":[{"text":"Adenine","value":"A"},{"text":"Guanine","value":"B"},{"text":"Uracil","value":"C"},{"text":"Cytosine","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197453,"question":"Which one of the following is an exact composition of a carbohydrates?","choices":[{"text":"Carbon and hydrogen","value":"A"},{"text":"Carbon and oxygen","value":"B"},{"text":"Carbon , hydrogen and oxygen","value":"C"},{"text":"Hydrogen and oxygen","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197452,"question":"Which one of the following polymer is called as Nylon 6,67","choices":[{"text":"Polyester","value":"A"},{"text":"Polyvinyl chloride","value":"B"},{"text":"Polyemide","value":"C"},{"text":"Polyvinyl acetate","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197451,"question":"When acid is added to an amino acid, which one of the following will act as a base.","choices":[{"text":"NH3-","value":"A"},{"text":"COO-","value":"B"},{"text":"H+","value":"C"},{"text":"R group","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197450,"question":"In the formation of Zwitter ion which one of the following donates the proton?","choices":[{"text":"COOH","value":"A"},{"text":"NH2","value":"B"},{"text":"CH2COO-","value":"C"},{"text":"OH-","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197449,"question":"Which one of the following reaction of carboxylic acid is reversible.","choices":[{"text":"Esterification","value":"A"},{"text":"Salt formation","value":"B"},{"text":"Reaction with PCl5","value":"C"},{"text":"Reaction with SOCl2","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197448,"question":"Which one of the following test is given by both aldehyde and ketone?","choices":[{"text":"Silver mirror test","value":"A"},{"text":"Fehling's solution test","value":"B"},{"text":"2,4 DNPH test","value":"C"},{"text":"Benedict's solution test","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197447,"question":"What mass of NaOH is present in 0.5 mol of sodium hydroxide?","choices":[{"text":"40 gm","value":"A"},{"text":"2.5 gm","value":"B"},{"text":"15 gm","value":"C"},{"text":"20 gm","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197446,"question":"Freezing point will also be defined as that temperature at which its solid and liquid phases have the same.","choices":[{"text":"Concentration","value":"A"},{"text":"Ratio between the particles","value":"B"},{"text":"Vapour pressure","value":"C"},{"text":"Attraction between the phases","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197445,"question":"The maximum number of electron in electronic configuration can be calculated by using formula.","choices":[{"text":"2l+1","value":"A"},{"text":"2n<sup>2</sup> +2","value":"B"},{"text":"2n<sup>2</sup>","value":"C"},{"text":"2n<sup>2</sup>+1","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":197444,"question":"Number of neutrons in<sup> 66</sup> Zn will be<div>                  30<br><div><br></div></div>","choices":[{"text":"30","value":"A"},{"text":"35","value":"B"},{"text":"38","value":"C"},{"text":"36","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197443,"question":"Electrical conductivity of graphite is greater in one direction that in other due to","choices":[{"text":"Isomorphism","value":"A"},{"text":"Cleavage plane","value":"B"},{"text":"Anisotropy","value":"C"},{"text":"Symmetry","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197442,"question":"London dispersion forces are the only forces present among the","choices":[{"text":"Molecules of H2O in liquid state","value":"A"},{"text":"Molecules of HCl gas","value":"B"},{"text":"atoms of helium in gaseous state at high temperature","value":"C"},{"text":"Molecules of solid chlorine","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197441,"question":"The number of moles of CO2 which contain 8.00 gm of oxygen is.","choices":[{"text":"0.75","value":"A"},{"text":"1.50","value":"B"},{"text":"0.25","value":"C"},{"text":"1.00","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197440,"question":"The substance for the separation of isotopes is firstly converted into the","choices":[{"text":"Neutral state","value":"A"},{"text":"Free state","value":"B"},{"text":"Vapour state","value":"C"},{"text":"Charged state","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197439,"question":"The energy from ultraviolet light is sufficient to break the_____ bonds in CCl,F","choices":[{"text":"Cl-Cl","value":"A"},{"text":"C-Cl","value":"B"},{"text":"Cl-F","value":"C"},{"text":"C-F","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":197438,"question":"________ is the major source of acid deposition in atmosphere.","choices":[{"text":"SiO2","value":"A"},{"text":"CO2","value":"B"},{"text":"SO3","value":"C"},{"text":"Al2O3","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197437,"question":"SO3 , formed in contact process is absorbed in ____________% H2SO4.","choices":[{"text":"90","value":"A"},{"text":"80","value":"B"},{"text":"98","value":"C"},{"text":"89","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197436,"question":"Which one of the following is the main function of DNA.","choices":[{"text":"Making of problem","value":"A"},{"text":"Making of among","value":"B"},{"text":"Breaking of ribose sugar","value":"C"},{"text":"Carries genetic material","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":197435,"question":"The amino linkage in Nylon -6,6 has the structure.","choices":[{"text":"-NH2","value":"A"},{"text":"-CO,O2","value":"B"},{"text":"-NH-CO-","value":"C"},{"text":"-NH-O-CO-","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":197434,"question":"IUPAC name of alanine is.","choices":[{"text":"2-aminopropanoic acid","value":"A"},{"text":"2- aminoethanoic acid","value":"B"},{"text":"2-aminobutane-1,4 choleric acid","value":"C"},{"text":"2-aminobutanoic acid","value":"D"},{"value":"E"}],"correctAnswer":1}]