Download NEET-UG 2013 Answer Key (Code - X) - Bansal Classes

CODE - XNEET-UG 2013 - Answer Key1 231 261 291 2121 3151 22 432 162 392 4122 3152 43 233 263 393 2123 1153 24 134 264 494 4124 4154 15 435 165 495 1125 4155 46 336 366 296 2126 4156 27 437 167 197 2127 2157 38 138 468 498 2128 4158 19 339 169 199 2129 4159 410 240 170 4100 4130 2160 411 241 171 3101 4131 4161 112 242 272 3102 2132 1162 313 343 273 2103 2133 2163 114 244 474 3104 2134 1164 115 145 175 4105 1135 4165 116 246 276 4106 2136 4166 217 347 277 3107 2137 1167 118 348 178 4108 3138 3168 419 149 279 2109 1139 2169 220 350 380 1110 1140 3170 321 451 481 2111 3141 4171 422 252 482 2112 4142 1172 223 253 383 3113 2143 4173 124 254 284 2114 2144 2174 425 155 485 3115 3145 4175 326 356 286 3116 3146 3176 127 257 387 1117 2147 1177 228 358 188 2118 4148 3178 229 259 489 2119 1149 1179 130 160 190 2120 4150 4180 1Corporate Office : A-10, "Gaurav Tower", Road No. 1, IPIA, Kota (Rajasthan) - 324005 | Tel: 0744-2423738/39, 2421097, 2424097 |Fax : 0744-2436779 | Website : www.bansal.ac.in | E-mail : premedical@bansal.ac.inSMS : BCPL ENQ to 56161 | Helpline : 08003045222, 08003046222, 08003018222

Q.1 Which is the monomer of Neoprene in thefollowing?(1) CH2 CCH CH|CH(2) CH 2 CCH CH|2Cl(3) CH 2= CH – C CH(4) CH 2= CH – CH = CH 2Ans. 23Q.2 Amagneticmomentof1.73BMwillbe shownbyone amongthe following :(1) [Ni(CN) 4] 2– (2)TiCl 4(3) [CoCl 6] 4– (4) [Cu(NH 3) 4] 2+Ans. 4Q.3 A metal has a fcc lattice. The edge length ofthe unit cellis 404 pm. The densityof the metalis 2.72 g cm –3 . The molar mass of the metal is:(N AAvogadr'o constant = 6.02 × 10 23 mol –1 )(1) 30 g mol –1 (2) 27 g mol –1(3) 20 g mol –1 (4) 40 g mol –1Ans. 2Q.4 Structure of the compound whose IUPACname is 3–Ethyl-2-hydroxy–4–methylhex–3–en–5–ynoic acid is :(1)(2)(3)(4)2Q.5 Which of the following structure is similar tographite ?(1) B (2) B 4C(3) B 2H 6(4) BNAns. 4Q.6 Some meta-directing substituents in aromaticsubstitution are given. Which one is mostdeactivating?(1) –SO 3H (2) –COOH(3) –NO 2(4) –C NAns. 3Q.7 How many grams of concentrated nitric acidsolution should be used to prepare 250 mL of2.0 M HNO 3? The concentrated acid is 70%HNO 3.(1) 90.0 g conc. HNO 3(2) 70.0 g conc. HNO 3(3) 54.0 g conc. HNO 3(4) 45.0 g conc. HNO 3Ans. 4Q.8 Theorderofstabilityofthefollowingtautomericcompound is :CHCHCH233OH| C CHIO| | C CHIIOH|22O| | C CHO| | C CHO| | C CH C CHIII333(1) III > II > I (2) II > I > III(3) II > III > I (4) I > II > IIIAns. 1Ans. 1

Q.9 Antiseptics and disinfectants either kill orprevent growth of microrganisms. Identifywhich of the following statements is not true :(1) Chlorine and Iodine are used as strongdisinfectants.(2)DilutesolutionsofBoricacidandHydrogenPeroxide are strong antiseptics.(3) Disinfectants harmthe livingtissues.(4)A0.2% solution of phenol is an antisepticwhich 1% solution acts as a disinfectant.Ans. 3Q.10 Nylon is an example of :(1) Polysaccharide (2) Polyamide(3) Polythene (4) PolyesterAns. 2Q.11 Among the following ethers, which one willproduce methyl alcohol treatment with hotconcentrated HI ?(1) CH(2) CH(3) CH333 CHC H||CH233 C H O CH|CH3 CO CH CH CH|CH323 O CH(4) CH 3–CH 2–CH 2–CH 2–O–CH 3Ans. 2Q.12 Which of these is not a monomer for a highmolecular mass silicone polymer ?(1) Me 2SiCl 2(2) Me 3SiCl(3) PhSiCl 3(4) MeSiCl 3Ans. 233Q.13 Identify the correct order of solubility inaqueousmedium :(1) Zns > Na 2S > CuS(2) Na 2S > CuS > ZnS(3) Na 2S > ZnS > CuS(4) CuS > ZnS > Na 2SAns. 3Q.14 What is the activation energy for a reaction ifits rate doubles when the temperature is raisedfrom 20ºC to 35ºC ? (R = 8.314 J mol –1 K –1 )(1) 269 kJ mol –1 (2) 34.7 kJ mol –1(3) 15.1 kJ mol –1 (4) 342 kJ mol –1Ans. 2Q.15 A hydrogen gas electrode is made by dippingplatinum wire in a solution of HCl of pH = 10and by passing hydrogen gas around theplatinumwireatoneatmpressure.Theoxidationpotential of electrode would be ?(1) 0.59 V (2) 0.118 V(3) 1.18 V (4) 0.059 VAns. 1Q.16 The value of Planck's constant is 6.63 × 10 –34Js. The speed of light is 3 × 10 17 nm s –1 .Whichvalue isclosest tothe wavelengthin nanometerof a quantum of light with frequency of6 × 10 15 s –1(1) 25 (2) 50(3) 75 (4) 10Ans. 2Q.17 What isthemaximm numbers ofelectrons thatcan be associated with the following set ofquantum numbers ?n = 3, l = 1 and m = –1(1) 6 (2) 4(3) 2 (4) 10Ans. 3

Q.18 Which of the following lanthanoid ions isdiamagnetic ?At nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70(1) Sm 2+ (2) Eu 2+(3) Yb 2+ (4) Ce 2+Ans. 3Q.19 6.02 × 10 20 molecules of urea are present in100 mL of its solution. The concentration ofsolutionis:(1) 0.01 M (2) 0.001 M(3) 0.1 M (4) 0.02 MAns. 12Q.20 Based on equation E = – 2.178 × 10 –18 J Z2 n certain conclusions arewritten. Which of themis not correct ?(1) Larger the value of n, the larger is the orbitradius.(2) Equation can be used to calculate thechange in energy when the electron changesorbit(3) For n = 1, the electron has a more negativeenergythan it does for n = 6 which means thatthe electron is more loosely bound in thesmallest allowed orbit(4)Thenegative sign in equationsimplymeansthattheenergyof electron boundtothe nucleusis lower than it would be if the electrons wereat the infinite distance from the nucleus.Ans. 3Q.21 An excess ofAgNO 3is added to 100 mLof a0.01 M solution ofdichlorotetraaquachromium(III) chloride. Thenumber of moles ofAgCl precipitated wouldbe :(1) 0.002 (2) 0.003(3) 0.01 (4) 0.001Ans. 4Q.22 KMnO 4can be prepared from K 2MnO 4asper the reaction :3MnO 4 2– + 2H 2O 2MnO 4 – + MnO 2+4OH – . The reaction can go to completion byremoving OH – ions byadding :(1) KOH (2) CO 2(3) SO 2(4) HClAns. 2Q.23 Which of the following compounds will notundergo Friedal–Craft's reaction easily:(1) Xylene (2) Nitrobenzene(3)Toluene (4) CumeneAns. 2Q.24 Which of these is least likely to act as a Lewisbase ?(1) F – (2) BF 3(3) PF 3(4) COAns. 2Q.25 The basic structural unit of silicates is :(1) SiO4–4(2) SiO2–3(3) SiO2–4(4) SiO –Ans. 1Q.26 Maximumdeviationfromidealgas is expectedfrom:(1) N 2(g) (2) CH 4(g)(3) NH 3(g) (4) H 2(g)Ans. 3Q.27 Which is the strongest acid in the following ?(1) HClO 3(2) HClO 4(3) H 2SO 3(4) H 2SO 4Ans. 2

Q.28 Reaction by which Benzaldehyde cannot beprepared :(1) + H 2in presence ofPd–BaSO 4(2) + CO + HCl in presence ofanhydrousAlCl 3Q.32 Which of the following statementsabout theinterstitial compounds is incorrect :(1) Theyare chemicallyreactive(2) Theyare much harder than the pure metal.(3) They have higher melting points than thepure metal(4) Theyretain metallic conductivityAns. 1(3) + Zn/Hg and conc. HClH 3O +Ans. 3(4) + CrO 2Cl 2in CS 2followed byQ.29 The radical, is aromatic becauseit has :(1) 7 p-orbitals and 6 unpaired electrons(2) 7 p-orbitals and 7 unpaired electrons(3) 6 p-orbitals and 7 unpaired electrons(4) 6 p-orbitals and 6 unpaired electronsAns. 2Q.30 Roasting of sulphides givs the gas X as a byproduct. This is a colorless gas with chokingsmell ofburntsulphurandcausesgreatdamageto respiratory organs as a result of acid rain.Itsaqueoussolutionis acidic, actsas a reducingagent and its acid has never been isolated. Thegas's is :(1) SO 2(2) CO 2(3) SO 3(4) H 2SAns. 1Q.31 At 25ºC molar conductance of 0.1 molaraqueous solution of ammonium hydroxide is9.54 ohm –1 cm 2 mol –1 and at infiite dilution itsmolar conductance is 238 ohm –1 cm 2 mol –1 .The degree of ionisation of ammoniumhydroxide at the same concentration andtemperature is :(1) 20.800 % (2) 4.008%(3) 40.800% (4) 2.080%Ans. 2Q.33 In the reaction :Ais:(1) Cu 2Cl 2(2) H 3PO 2and H 2O(3) H + /H 2O (4) HgSO 4/H 2SO 4Ans. 2Q.34 Which of thefollowing is electron-deficient ?(1) (SiH 3) 2(2) (BH 3) 2(3) PH 3(4) (CH 3) 2Ans. 2Q.35 Whichoneofthefollowingmoleculescontainsno bond ?(1) H 2O (2) SO 2(3) NO 2(4) CO 2Ans. 1Q.36 Which of the following does not give oxygenon heating ?(1) Zn(ClO 3) 2(2) K 2Cr 2O 7(3) (NH 4) 2Cr 2O 7(4) KClO 3Ans. 3Q.37 Which of the following is a polar molecule ?(1) SF 4(2) SiF 4(3) XeF 4(4) BF 3Ans. 1

Q.47 Perisperm differs from endosperm in :(1) having no reserve food(2) being a diploid tissue(3) its formation by fusion of secondarynucleus with several sperms(4) being a haploid tissueAns. 2Q.48 Besides paddy fields, cyanobacteria are alsofound inside vegetative part of :(1) Cycas (2) Equisetum(3) Psilotum (4) PinusAns. 1Q.49 Which of the following statements is correctin relation to the endocrine system?(1) Organs in the body like gastrointestinaltract, heart, kidney and liver do not produce any hormones.(2) Non - nutrient chemicals produced by thebody in trace amount that act asintercellular messenger are known ashormones.(3) Releasing and inhibitory hormones areproduced by the pituitary gland.(4) Adenohypophysis is under direct neuralregulation of the hypothalamus.Ans. 2Q.51 If two persons with' AB' blood group marryand have sufficiently large number of children,these children could be classified as 'A' bloodgroup: 'AB' blood group: 'B' blood group in1:2:1 ratio. Modern technique of proteinelectrophoresis reveals presence of both 'A'and 'B' type proteins in 'AB' blood groupindividuals. This is an example of :(1) Incomplete dominance(2) Partial dominance(3) Complete dominance(4) CodominanceAns. 4Q.52 A pregnant female delivers a baby who suffersfrom stunted growth, mental retardation, lowintelligence quotient and abnormal skin.This is the result of :(1) Low secretion of growth hormone(2) Cancer of the thyroid gland(3) Over secretion of pars distalis(4) Deficiency of iodine in dietAns. 4Q.53 Which one of the following organelle in thefigure correctly matches with its function?Q.50 Megasporangium is equivalent to :(1) Fruit (2) Nucellus(3) Ovule (4) Embryo sacAns. 3(1) Golgi apparatus, protein synthesis(2) Golgi apparatus, formation of glycolipids(3) Rough endoplasmic reticulum, proteinsynthesis(4) Rough endoplasmic reticulum, formation ofglycoproteinsAns. 3

Q.54 A phosphoglyceride is always made up of :(1) only an unsaturated fatty acid esterified toa glycerol molecule to which a phosphategroup is also attached(2) a saturated or unsaturated fatty acidesterified to a glycerol molecule to whicha phosphate group is also attached(3) a saturated or unsaturated fatty acidesterified to a phosphate group which isalso attached to a glycerol molecule(4) only a saturated fatty acid esterified to aglycerol molecule to which a phosphategroup is also attachedAns. 2Q.55 During sewage treatment, biogases areproduced which include:(1) methane, oxygen, hydrogensulphide(2) hydrogensulphide, methane, sulphurdioxide(3) hydrogensulphide, nitrogen, methane(4)methane, hydrogensulphide, carbon dioxideAns. 4Q.56 The eye of octopus and eye of cat showdifferent patterns of structure, yet they performsimilar function. This is an example of :(1) Homologous organs that have evolved dueto divergent evolution.(2) Analogous organs that have evolved dueto convergent evolution.(3) Analogous organs that have evolved dueto divergent evolution.(4) Homologous organs that have evolved dueto convergent evolution.Ans. 2Q.57 Which of the following criteria does notpertain to facilitated transport?(1) High selectivity(2) Transport saturation -(3) Uphill transport(4) Requirement of special membrane proteinsAns. 3Q.58 The process by which organisms with differentevolutionary history evolve similar phenotypicadaptations in response to a commonenvironmental challenge, is called:(1) Convergent evolution(2) Non-random evolution(3) Adaptive radiation(4) Natural selectionAns. 1Q.59 Infection of Ascaris usually occurs by :(1) eating imperfectly cooked pork(2) Tse -tse fly(3) mosquito bite(4) drinking water containing eggs of AscarisAns. 4Q.60 The Air Prevention and Control of PollutionAct came into force in :(1) 1981 (2) 1983(3) 1990 (4) 1975Ans. 1Q.61 Which group of animals belong to the samephylum?(1) Earthworm, Pinworm, Tapeworm(2) Prawn, Scorpion, Locusta(3) Sponge, Sea anemone, Starfish(4) Malarial parasite, Amoeba, MosquitoAns. 2

Q.62 Which of the following cannot be detected ina developing foetus by amniocentesis?(1) Sex ofthe foetus(2) Down syndrome(3) Jaundice(4) Klinefelter syndromeAns. 3Q.63 The Golgi complex plays a major role:(1) in digesting proteins and carbohydrates(2) as energy transferring organelles(3) in post translational modification of proteinsand glycosidation of lipids(4) in trapping the light and transforming it intochemical energyAns. 3Q.64 Select the correct match of the digestedproducts in humans given in column I withtheir absorption site and mechanism in columnII.Column I Column II(1) Fructose, Na + small intestine, passiveabsorption(2) Glycerol, fatty duodenum, move asacids chilomicrons(3) Cholesterol, large intestine, activemaltose absorption(4) Glycine, glucose small intestine, activeabsorptionAns. 4Q.65 Menstrual flow occurs due to lack of :(1) FSH (2) Oxytocin(3) Vasopressin (4) ProgesteroneAns. 4Q.66 The characteristics and an example of asynovial joint in humans is :Characteristics Examples(1) fluid filled betweentwo joints, provides skull bonescushion(2) fluid filled synovial joint betweencavity between two atlas and axisbones(3) lymph filled between gliding jointtwo bones, limited between carpalsmovement(4) fluid cartilage between Knee jointtwo bones, limitedmovementsAns. 2Q.67 Isogamous condition with non-flagelatedgametes is found in:(1) Spirogyra(2) Volvox(3) Fucus(4) ChlamydomonasAns. 1Q.68 A stage in cell division is shown in the figure.Select the answer which gives correctidentification of the stage with itscharacteristics.(1) Late chromosomes move awayanaphase from equatorial plate, golgicomplex not present.(2) Cytokinesis cell plate formed,mitochondria distributedbetween two daughter cells.(3) Telophase endoplasmic reticulum andnuclealus not reformed yet.(4) Telophase nuclear envelop reforms,golgi complex reforms.Ans. 4

Q.69 Seed coat is not thin, membranous in :(1) Coconut (2) Groundnut(3) Gram (4) MaizeAns. 1Q.70 The diagram given here is the standard ECGof a normal person. The P - wave representsthe :(1) Initiation of the ventricular contraction(2) Beginning of the systole(3) End of systole(4) Contraction of both the atriaAns. 4Q.71 Which Mendelian idea is depicted by a crossin which the F 1 generation resembles both theparents?(1) law of dominance(2) inheritance of one gene(3) co - dominance(4) incomplete dominanceAns. 3Q.72 The tendency of population to remain ingenetic equilibrium may be disturbed by :(1) lack of migration(2) lack of mutations(3) lack of random mating(4) random matingAns. 3Q.73 If both parents are carriers for thalessemia,which is anautosomal recessive disorder, whatare the chances of pregnancy resulting in anaffected child?(1) 50% (2) 25%(3) 100% (4) no chanceAns. 2Q.74 In plant breeding programmes, the entirecollection (of plants/seeds) having all thediverse alleles for all genes in a giyen crop iscalled :(1) cross - hybridisation among the selectedparents.(2) evaluation and selection of parents.(3) germplasm collection.(4) selection of superior recombinants.Ans. 3Q.75 The cell- mediated immunity inside the humanbody is carried out by:(1) B -lymphocytes (2) Thrombocytes(3) Erythrocytes (4) T -lymphocytesAns. 4Q.76 Match the name of the animal (column I), withone characteristics (column II). and thephylum/class (column III) to which it belongs:Column I Column II Column III(1) Ichthyophis terrestrial Reptilia(2) Limulus body covered Piscesby chitinousexoskeleton(3) Adamsia radially Poriferasymmetrical(4) Petromyzon ectoparasite CyclostomataAns. 4Q.77 Pigment-containing membranous extensions insome cyanobacteria are :(1) Basal bodies (2) Pneumatophores(3) Chromatophores (4) HeterocystsAns. 3Q.78 Kyoto Protocol was endorsed at :(1) CoP-5 (2) CoP-6(3) CoP-4 (4) CoP-3Ans. 4

Q.79 Select the answer which correctly matches theendocrine gland with the hormone it secretesand its function/deficiency symptom:EndocrineglandsHormone Functiona/deficiencysymptoms(1) PosteriorpituitaryGrowthHormone(GH)Oversecretionstimulates abnormalgrowth(2) ThyroidglandThyroxine Lack of iodine in dietresults in goitre(3) CorpusluteumTestosterone Stimulatesspermatogenesis(4) AnteriorpituitaryOxytocin Stimulates uteruscontraction during childbirthAns. 2Q.80 The first stable product of fixation ofatmospheric nitrogen in leguminous plants is :(1)Ammonia–(2) NO 3(3) Glutamate–(4) NO 2Ans. 1Q.81 Natural reservoir of phosphorus is :(1) Animal bones (2) Rock(3) Fossils (4) Sea waterAns. 2Q.82 What external changes are visible after the lastmoult of a cockroach nymph?(1) Anal cerci develop(2) Both fore wings and hind wings develop(3) Labium develops(4) Mandibles become harderAns. 2Q.83 What is the correct sequence of spermformation?(1) Spermatogonia, spermatocyte,spermatozoa, spermatid(2) Spermatogonia, spermatozoa,spermatocyte, spermatid(3) Spermatogonia, spermatocyte, spermatid,spermatozoa(4) Spermatid, spermatocyte, spermatogonia,spermatozoaAns. 3Q.84 Select the wrong statement:(1) Anisogametes differ either in structure,function or behaviour(2) In Oomycetes female gamete is smaller andmotile, while male gamete is larger andnon-motile(3) Chlamydomonas exhibits both isogamyand anisogamy and Fucus shows oogamy(4) Isogametes are similar in structure, functionand behaviourAns. 2Q.85 Monoecious plant of Chara shows occurrenceof :(1) stamen and carpel on the same plant(2) upper antheridium and lower oogonium onthe same plant(3) upper oogonium and lower antheridium onthe same plant(4) antheridiophore and archegoniophore onthe same plantAns. 3Q.86 The essential chemical components of manyenzymes are :(1) Nucleic acids (2) Carbohydrates(3) Vitamins (4) ProteinsAns. 3

Q.87 Which of the following statements is not trueof two cenes that show 50% recombinationfrequency?(1) The genes are tightly linked(2) The genes show independent assortment(3) If the genes are present on the samechromosome, they undergo more than onecrossovers in every meiosis(4) The genes may be on differentchromosomesAns. 1Q.88 Read the following statements (A-E) andanswer the question which follows them.(A) In liverworts, mosses, and fernsgametophytes are free-living(B) Gymnosperms and some ferns areheterosporous.(C) Sexual reproduction in Fucus, Volvoxand Albugo is oogamous(D) The sporophyte in liverworts is moreelaborate than that in mosses '(E) Both, Pinus and Marchantia aredioeciousHow many of the above statements arecorrect?(1) Two (2) Three(3) Four (4) OneAns. 8Q.89 The incorrect statement with regard toHaemophilia is :(1) It is a recessive disease(2) It is a dominant disease(3) A single protein involved in the clotting ofblood is affected(4) It is a sex - linked diseaseAns. 2Q.90 Advantage of cleistogamy is :(1) More vigorous offspring(2) No dependence on pollinators(3) Vivipary(4) Higher genetic variabilityAns. 2Q.91 Transition state structure of the substrateformed during an enzymatic reaction is :(1) permanent but unstable(2) transient and unstable(3) permanent and stable(4) transient but stableAns. 2Q.92 In china rose the flowers are :(1) Actinomorphic, epigynous with valvateaestivation(2) Zygomorphic, hypogynous with imbricateaestivation(3) Zygomorphic, epigynous with twistedaestivation(4) Actinomorphic, hypogynous with twistedaestivationAns. 4Q.93 Age of a tree can be estimated by :(1) biomass(2) number of annual rings(3) diameter of its heartv·;ood(4) its height and girthAns. 2Q.94 Which of the following are likely to be presentin deep sea water?(1) Eubacteria(2) Blue-green algae(3) Saprophytic fungi(4) ArchaebacteriaAns. 4

Q.95 Variation in gene frequencies withinpopulations can occur by chance rather thanby natural selection. This is referred to as :(1) Genetic drift (2) Random mating(3) Geneticload (4) Genetic flowAns. 1Q.96 A sedentary sea anemone gets attached to theshell tilling of hermit crab. The association is:(1) Symbiosis (2) Commensalism(3)Amensalism (4) EctoparasitismAns. 2Q.97 Which of the following is not correctlymatched for the organism and its cell walldegrading enzyme?(1) Plant cells - Cellulase(2) Algae - Methylase(3) Fungi - Chitinase(4) Bacteria - LysozymeAns. 2Q.98 Product of sexual reproduction generallygenerates:(1) Prolonged dormancy(2) New genetic combination leading tovariation(3) Large biomass(4) Longer viability of seedsAns. 2Q.99 Which of the following represent maximumnumber of species among global biodiversity?(1) Lichens(2) Fungi(3) Mosses and Ferns(4) AlgaeAns. 2Q.100 One of the legal methods of birth control is :(1) by abstaining from coitus from day 10 to17 of the menstrual cycle(2) by having coitus at the time of day break(3) by a premature ejaculation during coitus(4) abortion by taking an appropriatemedicineAns. 4Q.101 Which one of the following processes duringdecomposition is correctly described?(1) Humification - Leads to the accumulationof a dark coloured substance humus whichundergoes microbial action at a very fastrate(2) Catabolism - Last step in thedecomposition under fully anaerobiccondition(3) Leaching - Water soluble inorganicnutrients rise to the top layers of soil(4) Fragmentation - Carried out by organismssuch as earthwormAns. 4Q.102 DNA fragments generated by the restrictionendonucleases in a chemical reaction can beseparated by :(1) Polymerase chain reaction(2) Electrorhoresis(3) Restriction mapping(4) CentrifugationAns. 2

Q.103 The figure shows a diagrammatic view ofhuman respiratory system with labels A, B, Cand D. Select the option which gives correctidentification and main function and/ orcharacteristic.(1) B - pleural membrane - surround ribs onboth sides to provide cushion againstrubbing.(2) C - Alveoli - thin walled vascular bag likestructures for exchange of gases.(3) D - Lower end of lungs - diaphragm pullsit down during inspiration.(4) A - trachea -long tube supported bycomplete cartilaginous rings for conductinginspired air.Ans. 2Q.104 Which one of the following is not used forex situ plant conservation?(1) Seed banks(2) Shifting cultivation(3) Botanical Gardens(4) Field gene banksAns. 2Q.105 Lenticels are involved in :(1) Gaseous exchange(2) Food transport(3) Photosynthesis(4) TranspirationAns. 1Q.106 Among bitter gourd, mustard, birnjal, pumkin,china rose, lupin, cucumber, sunnhemp, grain,guava, bean, chilli, plum, petunia, tomato, rose,withania, potato, onion, aloe and tulip howmany plants have hypogynous flower?(1) Ten (2) Fifteen(3) Eighteen (4) SixAns. 2Q.107 The complex formed by a pair of synapsedhomologous chromosomes is called :(1) Kinetochore (2) Bivalent(3) Axoneme (4) Equatorial plateAns. 2Q.108 Which one of the following statements iscorrect?(1) Sporogenous tissue is haploid(2) Endothecium produces the microspores(3) Tapetum nourishes the developing pollen(4) Hard outer layer of pollen is called intineAns. 3Q.109 A major site for synthesis of lipids is :(1) SER (2) Symplast(3) Nucleoplasm (4) RERAns. 1Q.110 Select the correct statement with respect tolocomotion in humans :(1) Accumulation of uric acid crystals in jointscauses their inflammation.(2) The vertebral column has 10 thoracicvertebrae.(3) The joint between adjacent vertebrae is afibrous joint.(4) A decreased level of progesterone causesosteoporosis in old people.Ans. 1

Q.111 A biologist studied the population of rats in abarn. He found that the average natality was250, average mortality 240, immigration 20and emigration 30. The net increase inpopulation is :(1) 15 (2) 05(3) zero (4) 10Ans. 3Q.112 Parts A, B, C and D of the human eye areshown in the diagram. Select the option whichgives correct identification along 'with itsfunctions/characteristics :(1) B - Blind spot - has only a few rods andcones.(2) C - Aqueous chamber - reflects the lightwhich does not pass through the lens.(3) D - Choroid - its anterior part forms ciliarybody.(4) A - Retina - contains photo receptors -rods and cones.Ans. 4Q.113 Which of the following are correctly matchedwith respect to their taxonomic classification?(1) Centipede, millipede, spider, scorpion-Insecta(2) House fly, butterfly, tsetsefly, silverfish-Insecta(3) Spiny anteater, sea urchin, sea cucumberEchinodermata(4) Flying fish, cuttlefish, silverfish - PiscesAns. 2Q.114 Figure shows schematic plan of bloodcirculation in humans with labels A to D.Identify the label and give its function/s.(1) B - Pulmonary artery - takes blood fromheart to lungs, PO 2 = 90 mm Hg(2) C-Vena Cava - takes blood from bodyparts to right auricle, PCO 2 = 45 mm Hg(3) D - Dorsal aorta - takes blood from heartto body parts, PO 2 = 95 mm Hg(4) A-Pulmonary vein-takes impure bloodfrom body parts, PO 2 = 60 mm HgAns. 2Q.115 The most abundant intracellular cation is :(1) Ca ++ (2) H +(3) K + (4) Na +Ans. 3Q.116 During seed germination its stored food ismobilized by:(1) Cytokinin (2) ABA(3) Gibberellin (4) EthyleneAns. 3Q.117 Secondary productivity is rate of formation ofnew organic matter by:(1) Parasite (2) Consumer(3) Decomposer (4) ProducerAns. 2

Q.118 The colonies of recombinant bacteria appearwhite in contrast to blue colonies of nonrecombinantbacteria because of :(1) Insertional inactivation of alphagalactosidasein non-recombinant bacteria(2) Insertional inactivation of alphagalactosidasein recombinant bacteria(3) Inactivation of glycosidase enzyme inrecombinant bacteria(4) Non-recombinant bacteria containingbeta-galactosidaseAns. 4Q.119 Which of the following Bt crops is beinggrown in India by the farmers ?(1) Cotton (2) Brinjal(3) Soybean (4) MaizeAns. 1Q.120 Interfascicular cambium develops from thecells of :(1) Xylem parenchyma(2) Endodermis(3) Pericycle(4) Medullary raysAns. 4Q.121 Which one of the following is not the functionof placenta? It:(1) secretes estrogen.(2) facilitates removal of carbon dioxide andwaste material from embryo.(3) secretes oxytocin during parturition.(4) facilitates supply of oxygen and nutrientsto embryo.Ans. 3Q.122 Which of the metabolites is common torespiration mediated breakdown of fats,carbohydrates and proteins ?(1) Fructose 1, 6 - bisphosphate(2) Pyruvic acid(3) Acetyl CoA(4) Glucose - 6 - phosphateAns. 3Q.123 According to Darwin, the organic evolution isdue to :(1) Interspecific competition.(2) Competition within closely related species.(3) Reduced feeding efficiency in one speciesdue to the presence of interfering species.(4) Intraspecific competition.Ans. 1Q.124 Which enzyme/s will be produced in a cell inwhich there is a nonsense mutation in the lacY gene?(1) Lactose permease(2) Transacetylase(3) Lactose permease and transacetylase(4) - galactosidaseAns. 4Q.125 A good producer of citric acid is :(1) Pseudomonas(2) Clostridium(3) Saccharomyces(4) AspergillusAns. 4Q.126 Macro molecule chitin is :(1) phosphorus containing polysaccharide(2) sulphur containing polysaccharide(3) simple polysaccharide(4) nitrogen containing polysaccharideAns. 4

Q.127 The H-zone in the skeletal muscle fibre is dueto :(1) the central gap between myosin filamentsin theA-band.(2) the central gap between actin filamentsextending through myosin filaments in theA-band.(3) extension of myosin filaments in the centralportion of the A - band.(4) the absence of myofibrils in the centralportion of A- band.Ans. 2Q.128 Meiosis takes place in :(1) Conidia (2) Gemmule(2) Megaspore (4) MeiocyteAns. 4Q.129 A diagram showing axon terminal and synapseis given. Identify correctly at least two of A-D.(1) B - Synaptic connectionD-K +(2) A - NeurotransmitterB - Synaptic cleft(3) C - NeurotransmitterD - Ca ++(4) A-ReceptorC - Synaptic vesiclesAns. 4Q.130 Which one of the following is not a correctstatement?(1) Botanical gardens have collection of livingplants for reference.(2) A museum has collection of photographsof plants and animals.(3) Key is a taxonomic aid for identificationof specimens.(4) Herbarium houses dried, pressed andpreserved plant specimens.Ans. 2Q.131 Global warming can be controlled by :(1) Reducing reforestation, increasing the useof fossil fuel.(2) Increasing deforestation, slowing down thegrowth of human population(3) Increasing deforestation, reducing efficiencyof energy usage.(4) Reducing deforestation, cutting down useof fossil fuel.Ans. 4Q.132 The three boxes in this diagram represent thethree major biosynthetic pathways in aerobicrespiration. Arrows represent net reactants orproducts.1Glucose Pathway A 2 Pathway B49 10 67Pathway C 11Arrows numbered 4, 8 and 12 can- all be :(1) ATP(2) H 2 O(3) FAD + or FADH 2(4) NADHAns. 13812

Q.133 Artificial insemination means :(1) transfer of sperms of husband to a test tubecontaining ova(2) artificial introduction of sperms of a healthydonor into the vagina(3) introduction of sperms of a healthy donordirectly into the ovary(4) transfer of sperms of a healthy donor to atest tube containing ovaAns. 2Q.134 One of the representatives of PhylumArthropoda is :(1) silverfish (2) pufferfish(3) flying fish (4) cuttlefishAns. 1Q.135 Figure shows human urinary system withstructures labelledAto D. Select option whichcorrectly identifies them and gives theircharacteristics and/or functions.(1) B - Pelvis - broad funnel shaped spaceinner to hilum, directly connected to loopsof Henle.(2) C - Medulla - inner zone of kidney andcontains complete nephrons.(3) D - Cortex - outer part of kidney and donot contain any part of nephrons.(4) A - Adrenal gland - located at the anteriorpart of kidney. Secrete Catecholarrrineswhich stimulate glycogen breakdown.Ans. 4Q.136 A uniform force of ( 3î ĵ)newton acts on aparticle of mass 2kg. Hence the particle isdisplaced from position ( 2î kˆ ) meter toposition ( 4î 3ĵkˆ ) meter. The work doneby the force on the particle is :(1) 6 J (2) 13 J(3) 15 J (4) 9 JAns. 4Q.137 A,B,andCarethreepointsinauniformelectricfield. The electric potential is :BC(1) maximumat B(2) maximum at C(3) same at all the three pointsA, B and C(4) maximumatAAns. 1Q.138 Acoilofself-inductanceLisconnectedinserieswith a bulb B and anAC source. Brightness ofthe bulb decreases when :(1) number of turns in the coil is reduced.(2) a capacitance of reactance X C= X Lisincluded in the same circuit.(3) an iron rod is inserted in the coil.(4) frequency of theAC source is decreased.Ans. 3Q.139 Theupperhalfofaninclinedplaneofinclination isperfectlysmooth while lowerhalf is rough.Ablock startingfromrest at the topoftheplanewill again come to rest at the bottom, if thecoefficient of friction between the block andlower half of the plane is given by:Ans. 2(1) µ =2tan AE (2) µ 2 tan (3) µ = tan (4) µ =2tan

Q.140 The wettabilityof a surface byaliquid dependsprimarilyon:(1) surface tension(2) density(3) angle of contact between the surface andtheliquid(4) viscosityAns. 3Q.141 The condition under which a microwave ovenheatsupafooditemcontainingwatermoleculesmostefficientlyis:(1) The frequency of the microwaves has norelation with natural frequency of watermolecules.(2) Microwaves are heat waves, so alwaysproduce heating.(3) Infra-red waves produce heating in amicrowave oven.(4) The frequency of the microwaves mustmatch the resonant frequency of the watermolecules.Ans. 4Q.142 Agas is taken through the cycleA B CA, as shown. What is the net work done bythe gas ?5 67 432105P(10 Pa)2 4 6 8–3 3V(10 m )(1) 1000 J (2) zero(3) –2000 J (4) 2000 JAns. 1Q.143 A wire loop is rotated in a magnetic field. thefrequencyofchangeofdirectionoftheinducede.m.f. is(1) twice per revolution(2) four times per revolution(3) six times per revolution(4) once per revolutionAns. 4Q.144 The velocityofaprojectile at theinitial pointAis ( 2î 3ĵ)m/s.Its velocity(in m/s)at point Bis:Ans. 2YA(1) 2î 3ĵ(2) 2î 3ĵ(3) 2î 3ĵ(4) 2î 3ĵQ.145 The followingfour wires are made of the samematerial. Which of these will have the largestextension when the same tension is applied ?(1) length = 100 cm, diameter = 1 mm(2) length = 200 cm, diameter = 2 mm(3) length = 300 cm, diameter = 3 mm(4) length = 50 cm, diameter = 0.5 mmAns. 4Q.146 A wire of resistance 4 is stretched to twiceits original length. The resistance of stretchedwire would be :(1) 4 (2) 8(3) 16 (4) 2Ans. 3BX

Q.147 A piece of iron is heated in a flame. It firstbecomes dull redthen becomes reddish yellowand finally turns to white hot. The correctexplanation for the above observation ispossible byusing :(1) Wien's displacement Law(2) Kirchoff's Law(3) Newton's Law of cooling(4) Stefan's LawAns. 1Q.150 A rod PQ of mass M and length L is hinged atend P.The rod is kept horizontal bya masslessstring tied topoint Q as shown in figure. Whenstring is cut, the initial angular acceleration ofthe rod is :PLQQ.148 A small object of uniform density rolls up acurved surface with an initial velocity 'v'. It(1) Lg2g(2) Lreaches upto a maximum height of3v2 with2grespect to the initial position. The object is :(1) Solid sphere(2) Hollow sphere(3) Disc(4) RingAns. 3Q.149 A bar magnet of length 'l' and magnetic dipolemoment 'M' is bent in the form of an arc asshown in figure. The new magnetic dipolemomentwillbe:Ans. 4(3)2g3L(4)3g2LQ.151 In a n-type semiconductor, which of thefollowingstatementis true :(1) Electron are minority carriers andpentavalent atoms are dopants.(2) Holes areminoritycarriers and pentavalentatoms are dopants.(3) Holes are majority carriers and trivalentatoms are dopants.(4) Electrons aremajoritycarriers and trivalentatoms are dopants.Ans. 2(1) 3 M60°r(2) 2 MQ.152 In a common emitter (CE) amplifier having avoltage gain G, the transistor used hastransconductance 0.03 mho and current gain25. If the above transistor is replaced withanother one with transconductance 0.02 mhoand current gain 20, the voltage gain will be :(3) 2M(4) M(1) 1.5 G (2) 31 GAns. 1(3) 45 G (4) 32 GAns. 4

Q.153 For photoelectric emission from certain metalthe cutoff frequencyis . If radius of frequency2 implingeson the metal plate,the maximumpossible velocity of the emitted electron willbe (m is the electron mass) :Ans. 2(1) h / m (2) 2h/ m(3) 2 h / m (4) h /(2m)Q.154 InYoung's double slit experiment, the slits are2mm apart and are illuminated by photons oftwo wavelengths 1= 12000 Å and 2=10000 Å.At what minimum distance from thecomon central bright fringe on the screen 2mfrom the slit will a bright fringe from oneinterferencepatterncoincidewithabrightfringefrom the other ?(1) 6 mm (2) 4 mm(3) 3 mm (4) 8 mmAns. 1Q.155 Three blocks with masses m, 2m and 3m areconnected by strings, as shown in the figure.After an upward force F is applied on blockm, the masses move upward at constant speedv. What is the net force on the block of mass2m?m2m3mF v(1) 2 mg (2) 3mg(3) 6mg (4) zeroAns. 4Q.156 A certain mass of Hydrogen is changed toHeliumbytheprocessoffusion.themassdefectin fusion reaction is 0.02866 u. The energyliberated per u is : (given 1u = 931 MeV)(1) 26.7 MeV (2) 6.675 MeV(3) 13.35 MeV (4) 2.67 MeVAns. 2Q.157 If we studythe vibration of a pipe open at bothends, then the following statement is not true :(1) Odd harmonics of the fundamentalfrequencywill be generated(2)Allharmonicsofthefundamentalfrequencywill be generated(3) Pressure change will be maximum at bothends(4) Open end will be antinodeAns. 3Q.158 An explosion breaks a rock into three parts ina horizontal plane.Two of them go off at rightangles to each other.The first part of mass 1kgmoves with a speed of 12 ms –1 and the secondpart of mass 2kg moves with 8 ms –1 speed. Ifthe third part flies off with 4 ms –1 speed, thenits mass is :(1) 5 kg (2) 7 kg(3) 17 kg (4) 3 kgAns. 1Q.159 In an experiment four quantities a, b, c and dare measured with percentage error 1%, 2%,3% and 4% respectively. Quantity P iscalculated as follows :3a bP cd% error in P is :(1) 10% (2) 7%(3) 4% (4) 14%Ans. 42

Q.160 A source of unknown frequencygives 4 beats/s, when sounded with a source of knownfrequency 250 Hz. The second harmonic ofthe source of unknown frequency gives fivebeats perseconds, when sounded witha sourceof frequency513Hz. The unknown frequencyis:(1) 246 Hz (2) 240 Hz(3) 260 Hz (4) 254 HzAns. 4Q.161 Theinternalresistanceofa2.1Vcellwhichgivesa current of 0.2Athrough a resistance of 10is:(1) 0.5 (2) 0.8(3) 1.0 (4) 0.2Ans. 1Q.162 A current loop in a magnetic field :(1) can be in equilibrium in one orientation.(2) can be in equilibrium in two orientations,both the equilibrium states are unstable.(3) can be in equilibrium in two orientations,one stable while the other is unstable.(4) experiences a torque whether the field isuniformor nonuniform in allorientations.Ans. 3Q.164 The half life of a radiactive isotope 'X' is 20years. It decays to another element 'Y' whichis stable. The two elements 'X' and 'Y' werefound to be in the ratio 1 : 7 in a sample of agiven rock. the age of the rock is estimated tobe :(1) 60 years (2) 80 years(3) 100 years (4) 40 yearsAns. 1Q.165 The resistance of the four arms P, Q, R and Sin a Wheatstone's bridge are 10 ohm, 30 ohm,30 ohm and 90 ohm, respectively. The e.m.f.and internal resistance of the cell are 7 Voltand 5 ohm respectively. If the galvanometerresistance is 50 ohm, the current drawn fromthe cell will be :(1) 0.2 A (2) 0.1A(3) 2.0A (4) 1.0AAns. 1Q.166 In thegiven (V-T) diagram, what is the relationbetween pressure P 1and P 2?V 2P 2P 1TQ.163 The wavelength eof an electron and Pof aphoton of same energy E are related by :Ans. 1(1) P e(2) P e(3)P1e(4) P 2 e(1) P 2> P 1(2) P 2< P 1(3) Cannot be predicted(4) P 2= P 1Ans. 2 1

Q.167 The molar specific heats of an ideal gas atconstant pressure and volume are denoted byAns. 1C Pand C V, respectively. If =CCPVand R isthe universal gas constant, then C Visequal to :(1)R( 1)(2)( 1)R1 (3) R (4)1 Q.168 The amount of heat energy required to raisethe temperature of 1 g of Helium at NTP, fromT 1K to T 2K is :Ans. 4(1) 23Na k B(T 2– T 1)(2) 43Na k B(T 2– T 1)3 T(3) Na k 4 B 2 T1(4) 83Na k B(T 2– T 1)Q.169 A plano convex lens fits exactly into a planoconcave lens. Their plane surfaces are parallelto each other. If lenses are made of differentmaterials of refractive indices µ 1and µ 2and Ris the radius of curvature of the curved surfaceof the lenses, then the focal length of thecombinationis:Ans. 2R(1)2(µ 1 µ 2)(2)(µ(3)2R(µ µ2 1)(4)Rµ1 2)R2(µ µ1 2)Q.170 During an adiabatic process, the pressure of agas is found to be proportional to the cube ofits temperature. The ratio ofis:Ans. 3(1) 2 (2) 35(3) 23(4) 34CCPVfor the gasQ.171 Awavetravellinginthe +vex-directionhavingdisplacement along y-direction as 1m,wavelength 2m and frequency of 1 Hz isrepresented by :(1) y = sin (2x – 2t)(2) y = sin (10x – 20t)(3) y = sin (2x + 2t)(4) y = sin (x – 2t)Ans. 4Q.172 The output (X) of the logic circuit shown infigurewillbe:AB(1) X A. B (2) X A. B(3) X A B (4) X A. BAns. 2Q.173 A body of mass 'm' is taken from the earth'ssurface to the height equal to twice the radius(R) ofthe earth. The changein potential energybodywill be :Ans. 1(1) 32 mgR (2) 3 mgR(3) 31 mgR (4) mg 2RX

Q.174 Ratio of longest wave lengths correspondingto Lyman and Balmer series in hydrogenspectrum is :Ans. 43(1) 239(3) 317(2) 295(4) 27Q.175 Infinite number of bodies, each of mass 2kgare situated on x-axis at distances1m, 2m, 4m,8m, ..........., respectively, from the origin. Theresulting gravitational potential due to thissystem at the origin will be :(1)8 G (2)3(3) –4G (4) –GAns. 34 G3Q.176 When a proton is released from rest in a room,it starts with an initial acceleration a 0towardswest. When it is projected towards north witha speed v 0is moves with an initial acceleration3a 0toward west. The electric and magneticfields in the room are :(1)(2)ma 0ema 0ewest,east,2maev003maev00downupQ.177 For a normal eye, the cornea of eye providesa converging power of 40 D and the leastconverging power of the eye lens behind thecornea is 20D. Using this information, thedistance between the retina and the corneaeyelens can be estimated to be :(1) 2.5 cm (2) 1.67 cm(3) 1.5 cm (4) 5 cmAns. 2Q.178 A parallel beam of fast moving electrons isincidentnormallyonanarrowslit.Afluorescentscreen is placed at a large distance from theslit. If the speed of the electrons is increased,which of the following statements is correct ?(1) Theangular width of the central maximumof the diffraction pattern will increase.(2) Theangular width of the central maximumwill decrease(3) Theangular width of the central maximumwill be unaffected.(4) Diffraction pattern is not observed on thescreen in the case of electronsAns. 2Q.179 Two pith balls carrying equal charges aresuspended from a common point bystrings onequallength,theequilibriumseparationbetweenthem is r. Now the strings are rigidly clampedat half the height. The equilibrium separationbetween the balls now becomes :Ans. 1(3)(4)ma 0ema 0eeast,west,3maev002maev00downup r (1) 3 2 2r (2) 3 y/2 2r (3) 3 Ans. 1(4)1 22

Q.180 A stone falls freely under gravity. It coversdistances h 1, h 2and h 3in the first 5 seconds,the next 5 seconds and the next 5 secondsrespectively. The relation between h 1, h 2andh 3ish 2 h 3(1) h 1= = 3 5(2) h 2= 3h 1and h 3= 3h 2(3) h 1= h 2= h 3(4) h 1= 2h 2= 3h 3Ans. 1