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Aipmt 2015

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AIPMT - 2015 ALLEM AIPMT = 2015 164 ‘An electron moving in a circular orbit of radius + z : ” Al nucleus is taken to be makes n rotations per second. The magnetic field | © NTadiot the £3 Alnuctes taken o be Ry then produced at the centre has magnitude | the radius of 12°Te nucleus is nearly 5 3 (1) Zero 7 3r, ay gRw (2) eR By”? ( sy 3 @ Ae a) Hone a(%) Be (qq) Be 6. Inadouble sit experiment, the two sls are I mm One mole of an ideal diatomic gas undergoes a apart and the screen is placed 1 m away. A transition from A to B along a path AB as shown monochromatic ight of wavelength 500 rm is used in the figure, What willbe the width of each slit for obtaining ten ‘maxima of double sit within the central maxima of single sit pattern ? (1) 0.1 ram 2) 0.5 mm (3) 0.02 mm (4) 0.2mm 7. For a parallel beam of monochromatic light of wavelength ', diffraction is produced by a single slit whose width'a'is ofthe order ofthe wavelength ofthe ight. I'D’ isthe distance of the screen from eee the sit, the width of the central maxima will be (1)-20 ks (220 @)-124d (4) 20k When two dispalcements represented by (yD Yy, =asin(ot) and y= b cos(at) are superimposed a a the motion is : 2Da 2D). a= @ = a a (1) simple harmonic with amplitude 8. Across a metalic conductor of non-uniform cross section a constant potential difference is applied (2 simple harmonic with amplitude JgFsb® The quantity which remains constant along the conductor is ; , (a+b) (1) current 2) drift velocity (3) simple harmonic with amplitude “> ee an a face (4) not a simple harmonic 9. Onobserving light from three different stars P, Q ‘A particle of unit mass undergoes one-dimensional and R, it was found that intensity of violet color's motion such that its velocity varies according to maximum inthe spectrum of P, the intensity of gros * colour is maximum in the spectrum of R and the oe intensity or red colour is maximum in the spectrum where and n are constants and x is the position of Q ll Tp, Tyand Ty are the respective absohst of the particle. The acceleraion of the particle as temperatures of P, Q and R, then it can be a function of x, ls given by concluded from the above observation that ()-2nphe“ enh (T>Tr>T. = DTHPT.>Tp —_—____ ARLE 10. potentiometer wire has length 4m and resistance 80. The resistance that must be connected in series with the wire and an accumulator of e.m.. 2V, so ‘8 to get a potential gradient 1 mV per em on the wire is (1) 40.0 (2440 (3/480 (4) 320 Consider 3" orbit of He* (Helium), using non-relativistic approach, the speed of electron in this orbit will be [given K = 9x 10” constant, 2 = 2and h (Planck's Constant) = 6.6 x10 J 5] (1) 1.46 x 108 m/s (2) 0.73 x10® m/s (3) 3.0 x 108 m/s (4) 2.92 x10° m/s ‘A wire carrying current | has the shape as shown, in adjoining figure. Linear parts of the wire are very Jong and paralle! to X-axis while semicircular portion of radius R is lying in Y-Z plane. Magnetic field at point O is : AIPMT - 2015 ‘Which of the following figures represent the variation of particle momentum and the associated deBroglie wavelength ? P > it t a (2) = = P| Pp t t (3) 4) =a => A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant K, which can just fil the air gap of the capacitor, is now inserted in it. Which of the following is incorrect ? (1) The energy stored in the capacitor decreases K times. ’ (3) The charge on the capacitor isnot conserved. 2 The changein enewysoredis Lov (4) The potential difference between the plates decreases K times. ‘The fundamental frequency of a closed organ pipe of length 20em is equal to the second overtone of an organ pipe open at both the ends. The length of organ pipe open at both the ends is = (Q) 100 cm (2) 120 om (8) 140 cm (4) 80 cm. The refracting angle of a prisms A, and refractive index of the material of the prism is cot{A/2). The angle of minimum deviation is (1) 180°- 28, (2) 90°- A. *(@) 180° + 2A (4) 180° 3A, ree ee) 165 AIPMT - 2015 17. 18. 19. 166 Which logic gate is represented by the following combination of logic gates ? (a) NAND (3) NOR (2) AND (oR A Carnot engine, having an efficiency of 1 ae heat engine, is used as a refrigerator. If the work done on the system is 10 J, the arhount of energy absorbed from the reservoir at lower temperature Ce (@) 994 @1s (2)909 (4) 100 J A certain metallic surface is illuminated with ‘monochromatic ight of wavelength, 2. The stopping potential for photo-electric current for this light is 3Vo. if the same surface is illuminated with ight of wavelength 2h, the stopping potential is Vo. The threshold wavelength for this surface for photoelectric effect is :- () 4a 2) x a QE (46 A rodiation of energy ‘falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (C = Velocity of light) - 21. 22. SLB ‘A mass m moves in a circle on a smooth horizontal plane with velocity vp at a radius-Ro. The mass is attached toa string which passes through a smooth hole in the plane as shown. ‘The tension in the string is increased gradually and R, finally m moves in a circle of radius >. The final value of the kinetic eneray is = a Jig (2) 2mv5 8) Jrovs (4) mvj, ‘Two identical thin plano-convex glass lenses (refractive index 1.5) each having radius of curvature of 20 cm are placed with their convex surfaces in contact at the centre. The intervening space fs filled with oil of refractive index 1.7. The focal length of the combination is :~ () -25 em (2) -50 cm @) 50cm (4) -20 cm Ablock A of mass m, rests on a horizontal table A light string connected to it passes over @ frictionless pulley at the edge of table and from its other end another block B of mass my is suspended. ‘The coefficient of kinetic friction between the blodk and the table is, When the block A is sliding on the table, the tension in the string is =~ w = e t Qe Sa=vmda fy) mall te (m, +m,) (m, +m,) E E Sa a> g MmO=wle gy (me (m, +m,) (m, +m,) eens armen came AIPMT - 2015 ray A a is executing SHM along a straight line. Its velocities at distances x, and x, from the mean | Position are V, and V», respectively. Its time period ane 8) anf xpext (any UF A ship A is moving Westwards with a speed of 10 km h-! and a ship B 100 km South of A, is ‘moving Northwards with a speed of 10 km hr, The time after which the distance between them becomes shortest, is = @) 5h @) 102h 0h Arod of weight W is supported by two parallel knife edges A and B and isin equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at distance ion on A is == (2)5V2h Wd Wid-x) x Wx ay ‘The approximate depth of an ocean is 2700 m. The compressibility of water is 45.4 x10 Pa"? and density of water is 10° kg/m®,What fractional compression of water willbe obtained at the bottom of the ocean ? (1) 1.0 x10? (3) 1.4 «107 (2)1.2 x10? (4) 0.8 x10° ee ‘Two particles of masses m,, m, move with initial "voces and, ‘On collision, one ofthe particles et excited to higher level, after abostbing energy «If final velocities of particles be v, and v, then we must have a jai stmt 24la ye m,vj +4m,v3 - 7 e ® pmaletmuie=t m,vi+4m,v3 2 @ pm tu? f+dmiui+e-Lmivj etm: (4) mfu, + mu, ~ = mPv, + mv, Keplers thitd law states that square of period of revolution (T) of a planet around the sun, is proportional to third power of average distance r between sun and planet be. T= Kr here K is constant. If the masses of sun and planet are M and m ‘espectively then as per Newton's law of gravitation force of attraction between them is GMm Zz + here G is gravitational constant. The relation between G and K is described as (1) GMK = 4n? ()K=G 1 @k->g (4) GK = 4x? Ablock of mass 10 kg, moving in x direction with. a constant speed of 10 ms”, is subjected to a retarding force F = 0.1 x J/m during its travel from x = 20 m to 30m. Its final KE will be : (2)275 3 (4) 475 J (1) 4505 (3) 2505 167 AIPMT - 2015 31. 33. 168 ‘A.wind with speed 40 m/s blows parallelto the roof | 35. of a house. The area of the roof is 250 m?. Assuming that the pressure inside the rouse is | atmospheric pressure, the force exerted by the wind 6n the roof and the direction of the force will be (yy = 1-2 kg/m?) (1) 4.8 «10° N, upwards 2) 2.4 «10° N, upwards (3) 2.4 x 10° N, downwards (4) 4.8 10° N, downwards ‘Two spherical bodies of mass M and 5 M and radii Rand 2 R are released in free space with initial separation between their centres equal to 12 R. If they attract each other due to gravitational force only, then the distance covered by the smaller body before collision is 7 a4a5R 275R @15R @25R Aesitance’R' draws power'P' when connected to | 97, ‘an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes 'Z’, the power drawn will be: IR R a rk (8) 2 (3)P 4) (8) & The ratio ofthe specific heats G_ = interms of degrees of freedom (n) is given by (a +3) @ (2 +2) (143) (1+4) orcemmcersests ALB Figure below shows two paths,thatmay be taken by a gas to go from a state A to a state C |_| 2a" Pa Ba ado v= In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the process AC will be (1) 500 J (2) 460 5 3) 300 J (4) 380 J energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, the dimensional formula of surface tension will be : evr (yEv?ry QE Ty) @EVvrT If in a p-n junction, a square input signal of 10V is applied as shown, then the output across R,_ will be hov, a (2) BV (3) @) Ore ALLEN 36. 39. a1. ‘Three blocks A, B and C of masses 4 kg, 2 kg and 11 kg respectively, are in contact on a frictionless surface, as shown. Ifa force of 14 N is apolied on the 4 kg block, then the contact force between A and Bis aon (3) 18 N A, Band C are voltmeters of resistance R, 1.5 R and 3R respectively as shown in the figure. When some potential difference is applied between X and Y, the voltmeter readings are V,, Vg and Ve respectively. Then : ()V,# Vg = Ve (Vy = Vp 4 Ve GV, # Vg# Ve (Vy = Vg = Ve Three identical spherical shells, each of massm and radius rare placed as shown in figure. Consider an axis XX’ which is touching to two shells and passing through diameter of third shell ‘Moment of inertia of the system consisting of these three spherical shells about XX’ axis is = x x! (1) 3 mr 2 Emr (3) 4 mia @ me ‘The electric fie in a certain region is acting radially ‘outward and is given by E = Ar. A charge contained. ‘42. 44. AIPMT - 2015 ‘The two ends of a metal rod are matainted at temperatures 100°C and 110°C. The rate of heat flow in the rod is found to be 4.0 J/s. Ifthe ends are maintained at temperatures 200°C and 210°C, the rate of heat flow will be (1) 16.8 J/s (2) 8.0 J/s @) 404/s (4) 44.0 J/s ‘Two similar springs P and Q have spring constants Ky and Ka, such that Kp > Kg The are stretched, first by the same amount (case a.) then by the same force (case b). The work done by the springs Wp and Woare related as, in case (a) and case (b), respectively (1) Wp = Wa ; We = Wa (2) Wp > Wa i Wa > Wp @) Wp < Wa; Wa < We (@) Wp = Wa: We > Wa ‘A conducting square frame of side ‘a! and a long straight wire carying current I are located in the same plane as shown inthe figure. The frame moves to the right with a constant velocity VV. The emf induced in the frame will be proportional to 1 W Oa poeta 2) BeraF 1 1 ® Goa OY ‘a shepere of radius ‘a! cor 45. A particle of mass m is driven by a machine that thea walbe free we eeremict ae 0, <0; @) 0; <0, >03 4) 0; >0, >0; a Le 7. 61. Treatment of cyelopentanone >» with, rmethy/ lithium gives which of the following species? (1) Cyclopentanonyi cation (2) Cyclopentanony| radical (3) Cyclopentanonyl biradical (4) Cyclopentanonyl anion ‘The electrolytic reduction of nitrobenzene in strongly acidic medium produces :- (1) Azoxybenzene (2 Azobenzene (@)Aniline (4) p-Aminophenol Magnetic moment 2.84 B.M. is given by = (At. no), Ni= 28, Ti = 22, Cr = 24, Co = 27) (1) T% (2) Cr (B)Co% (a) Ne Agiven metal crystallizes out with a cubic structure having edge length of 361 pm. If there are four ‘metal atoms in one unit cell, what is the radius of cone atom? (Q) 127 pm (2) 80 pm (3) 108 pm (4) 40 pm ‘Which of the following is the most correct electron displacement for a nucleophilic reaction to take place? H Hy, wHc~E-6g-c°E, ‘Which one of the following electrolytes has the same value of van't Hoff factor ()as that of the Al{SOq)s (if all are 100% ionised) ? (1) KJFe(CN\g (2) AMINO.) B)KdFeCNd (4)K,S0, AIPMT - 2015 Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other ? (1) isa reducing agent (2)is soluble in water (3) is used as a food-preservative (4) forms ‘acid-rain’ ‘The total number of -bond electrons in the following structure is == H.C, HK CH, Hi CH, M8 @iz 616 Ma Solubility of the alkaline earth's metal sulphates in water decreases in the sequence == (1) Ca > Sr > Ba > Mg (2) Sr > Ca > Mg > Ba (3) Ba > Mg > Sr > Ca (4) Mg > Ca > Sr > Ba Maximum bond angle at nitrogen is present in which of the following ? @) No; (2) Nos (3) No; (4) No, Ifthe value of an equilibrium constant for a particular reaction is 1.6x 1012, then at equilibrium the system, will contain :- (1) mostly reactants (2) mostly products (3) similar amounts of reactants and products (4) all reactants The number of d-electrons in Fe% (2 = 26) is not ‘equal to the number of electrons in which one of the following? (1) pelectrons in Cl Z = 17) (2) d-electrons in Fe (2 = 26) (3) prelectrons in Ne (Z = 10) (4) s-electrons in Mg (2 = 12) 2a ey 171 AIPMT - 2015 70. n. cH, 72. 1 I (CHe-€-ONe+CH,CH,Cl_—> CH,--0-CH-CH, 73. 172 In which of the following compounds, then © Cl bond ionisation shall gue most stable carbonium ion? | HC. c-a © He~1 i HCH NS LCA C= Ch ic -Cl ® onc 07 A.device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as = () Electrolytic cell (2) Dynamo (3) NiCad cell (4) Fuel Cell Consider the following compounds oH, Ph : | 7 gat Ph-C-Ph OC I . CH, CH, 0 a, i) Hyperconjugation occurs In :- (1) Wonly (2) Mlonly (3) Land ill (4) only ‘The reaction cH, cH, -NaCl cH, cH, is called :- (1) Williamson continuous etherification process (2) Etard reaction (3) Gatterman - Koch reaction (4) Williamson Synthesis Cobalt (Ill) chloride forms several octahedral complexes with ammonia, Which of the following will not give test of chloride ions with silver nitrate at 25°C ? 74. 75. 76. 77. 78. 79. ces A BALEEA ‘A mixture of gases contains H and O2 gases in the ratio of 1: 4 (w/w). What is the molar ratio of the two gases in the mixture ? (1) 4:1 Q)16:1 G21 M14 ‘Which of the following processes does not involve oxidation of iron ? (1) Decolourization of blue CuSO solution by iron (2) Formation of Fe(CO), from Fe (3) Liberation of Hy from steam by iron at high temperature (4) Rusting of iron sheets Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii ? (Nubmers in the parenthesis are atomic numbers. (1) Zr (40) and Nb (41) (2) Zr (40) and HE (72) (3) 2r (40) and Ta (73) (4) Ti (22) and Zr (40) ‘Which of the following statements is correct for a reversible process in a state of equilibrium ? (1) AG = 2.30 RT log K (2) AG’ = -2.30 RT log K @) AG’ ~ 2.30 RT log K (4) AG = -2.30 RT log Kk The angular momentum of electron in'é’ orbital is equal to () V2n (2) 3A (a) Jen The boiling point of 0.2 mol kg" solution of X in \Wwater is greater than equimolal solution of Y in water. Which one of the following staternents is true in this case ? 0A (1) Molecular mass of X is greater than the ‘molecular mass of Y. (2) Molecular mass of X is less than the molecular mass of Y. (3) Y is undergoing dissociation in water while X undergoes no change. (4) X is undergoing dissociation is water. The function of "Sodium pump" is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a consituent of this pump : (CoC aNH (2)CoCly SNH, (8)CoCy6NH,, (4) CoC, 3NHy, (1) Mg? (2) Ks (3) Fe2+ (4) Ca?> Ca ALLER si. 83. ‘Given c om H.C C CH. H. cr cH, cH, cH, a o a The enthalpy of the hydrogenation of these compounds will be in the order as = () M>m>1 @)l>t>m (41> > ‘The enotic form of ethyl acetoacetate as below has: (21> >t neato aaah too OH OG, 0 OCH, (1) 16 sigma bonds and 1 pi- bond (2) 9 sigma bonds and 2 pi - bonds (3) 9 sigma bonds and 1 pi - bond (4) 18 sigma bonds and 2 pi - bonds Biodegradable polymer which can be produced from alycine and aminocaproic acid is = (1) PHEV (2) Buna - N (3) Nyon 6, 6 (4) Nylon 2- nylon 6 ‘Which of the following species contains equal number of o- and x- bonds = (1) Xe, (CN @)CHACN), (4) HCO3 ‘Which of these statements about [Co(CN) is true:- (1) {Co{CN)g* has four unpaired electrons and will bein a lowspin configuration. (2) {Co(CN)gP- has four unpaired electrons and will be in a high spin configuration. (8) [Co(CN)¢P-has no unpaired electrons and will be in a high-spin configurtion. (4) ICo{CN)g* has no unpaired electrons and will be in a low-spin configuration. Qe AIPM) = 205 Which one is aot equal to zero foran dS. 2) Vine (3) AP = Pitsened ~ Pracut (4) AH pic Which property of colloidal solution is independe=it of charge on the colloidal particles :- (1) Electrophoresis (2) Electro-osmosis. (3) Tyndall effect (4) Coagulation Given CH, { cH, cc, ‘CH, oO 0 am (am) CH, CH, ° @ Which of the given compounds can exhibit tautomerism? (1) Land tt (2)land tt (3)1, Wand It (4) Land ‘When initial concentration of a reactant is doubled ina reaction, its half-life period is not affected. The order of the reaction is = () First (2) Second (3) More than zero but less than first ‘ (4) Zero A single compound of the structure = ia So {s obtainable from ozonolysis of which ofthe following cyclic compounds ? HAC. CH, “8 H,C: CH, H.C. aw Eo 173 OHA g #, 4 a CH, AIPMT - 2015 é " LR A 91. 92. 93. Which of the following endoparasites of humans does show viviparity ? (1) Enterobius vermicularis (2) Trichinella spiralis (3) Ascaris lumbricoides (4) Ancylostoma duodenale | Ciyopreservation of gametes of threatened species | in viable and fertile condition can be referred to as:- (1) Advanced ex-situ conservation of biodiversity (2) In situ conservation by sacred groves (3) In situ cryo-conservation of biodiversity (4) In situ conservation of biodiversity Which one one of the following matches is correct? (a) Alternaria | Sexual reproduction, [absent [Deuteromycetes (2) ‘Mucor Reproduction | Ascomycetes [Conjugation ‘Agaricus Parasitic Basidiomycetes fungus (4) Phytophthora | Aseptate Basidiomycetes mycelium 94. 95. 174 Minerals known to be required in large amounts for plant growth include :- (1) calcium, magnesium, manganese, copper (2) potassium, phosphorus, selenium, boron (3) magnesium, sulphur, iron, zine (4) phosphorus, potassium, sulphur, calcium Which of the following enhances or induces fusion of protoplasts ? (1) Polyethylene glycol and sodium nitrate (2)IAA and kinetin | (B)IAA and gibberellins (4) Sodium chloride and potassium chloride 97. 98. 100. 101. 102. Which of these is not an important comp: initiation of parturition in humans ? (1) Synthesis of prostaglandins (2) Release of oxytocin (3) Release of prolactin (4) Increase in estrogen and progesterone ratio In which of the following gametophyte is not independent free living ? (1) Marchantia (2) Preris (3) Pinus (4) Funaria Which of the following is not a sexually transmitted disease ? (1) Acquired Immune Deficiency Syndrome (AIDS) (2) Trichomoniasis (3) Encephalitis (4) Syphilis Leaves become modified into spines in = (1) Pea (2)Onion 3) Silk Cotton (4) Opuntia Which one gives the most valid and recent explanation for stomatal movements ? (1) Potassium influx and efflux (2) Starch hydrolysis (3) Guard cell photosynthesis (4) Transpiration Which of the following had the smallest brain capacity ? (1) Homo sapiens (2) Homo neanderthalensis (3) Homo habilis (4) Home erectus High value of BOD (Biochemical Oxygen Demand) indicates that (1) Water is highly polluted (2) Water is less polluted (3) Consumption of organic matter in the water is higher by the microbes (4) Water is pure ALLEY 103. 104. 105. 106. 107. 108. 109. Sliding filament theory can be best explained as. (1) Actin and Myosin filaments shorten and slide pass each other (2) Actin and Myosin filaments do not shorten but rather slide pass each other (3) When myofilaments side pass each other, Myosin filaments shorten while Actin filaments do not shorten (4) When myofilaments side pass each other Actin filaments shorten while Myosin filament do not shorten ‘A gymnast is able to balance his body upside down ‘even in the total darkness because of :- (1) Vestibular apparatus (2) Tectorial membrane (3) Organ of corti (4) Cochlea ‘Aman with blood group ‘A’ marries a woman with blood group 'B’. What are all the possible blood groups of their offsprings ? (2) ABand ABonly — (2)A,B,AB and O (3) Oonly (4) Aand B only ‘Typical growth curve in plants is = (1) Linear (2) Stair-steps shaped (3) Parabolic (4) Sigmoid The UN Conference of Parties on climate change in the year 2011 was held in = (1) South Africa (2) Peru (3) Qatar (4)Poland A technique of micropropagation is = (1) Somatic embryogenesis (2) Protoplast fusion (3) Embryo rescue (4) Somatic hybridization How many pairs of contrasting characters in pea plants were studied by Mende! in his experiments ? (1) Six (2) Eight | (3) Seven (4) Five ee 110. i. 112. 113. 114. 115. AIPMT - 2015 © BK & As Gq isthe floral formula of () Sesbania (2) Petunia @) Brassica (4) Allurn “The crops engineered for glyphosate are resistant/ tolerant to = (1) Bacteria (2) Insects (8) Herbicides (4) Fungi Which of the following statements is not correct? (1) Goblet cells are’ present in the mucosa of intestine and secrete mucus (2) Oxyntic cells are present in the mucosa of stomach and secrete HCI. (8) Acini are present in the pancreas and secrete carboxypeptidase (4) Brunner’s glands are present in the submucosa of stomach and secrete pepsinogen In sea urchin DNA, which is double stranded, 179 of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this DNA are ;- (1) G 17%, A 16.5%, T 32.5% (2) G 17%, A 33%, T 33% (3) G 8.5%, A 50%, T 24.5% (4) G 34%, A 24.5%, T 24.5% In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to = (1) Acidic pH of the insect gut (2) Action of gut micro-organisms (8) Presence of conversion factors in insect gut (4) Alkaline pH of the insect gut ‘Cytochromes are found in = (1) Outer wall of mitochondria (2) Cristae of mitochondria, (3) Lysosomes (4) Matrix of mitochondria, 175 AIPMT - 2015, 116. Read the following five statements (A to E) and select the option with alll correct statements (A) Mosses and Lichens are the first organisms to colonise a bare rock. (B) Selaginella is a homosporous pteridophyte (©) Coralloid roots in Cyeas have VAM (D) Main plant body in bryophytes is gametophytic, whereas in pteridophytes itis sporophytic (Bin gymnosperms, male and female gametophytes. are present within sporangia located on sporophyte (1) B), (©) and (D) (2) (A), (D) and (E) (3) (8), (©) and (E) (4) (A), (C) and (D} 117. Which one of the following is correct ? (1) Serum = Blood + Fibrinogen (2) Lymph = Plasma + RBC + WBC (3) Blood = Plasma + RBC + WBC (4) Plasma = Blood ~ Lymphocytes ‘The movement of a gene from one linkage group, to another is called =~ (1) Duplication (2 Translocation (8) Crossing over (A Inversion Which body of the Goverment of India regulates GM research and safety of introducing GM organisms for public services ? (1) Indian Council of Agricultural Research (2) Genetic Engineering Approval Committee (3) Research Committee on Genetic Manipulation (4) Bio-safety committee Rachel Carson's famous book "Silent Spring’ is related to = (1) Noise pollution (2) Population explosion (3) Ecosystem management (4) Pesticide pollution Gastric juice of infants contains :~ (1) nuclease, pepsinogen, lipase (2) pepsinogen, lipase, rennin (3) amylase, rennin, pepsinogen (4) maltase, pepsinogen, rennin 176 118. 119. 120. 121. 122. 123. 124, 125, 126. 127. 128. 129. renee ALLE Which ofthe following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone? (1) Reduced Immune System (2) Damage to eves (3) Increased liver cancer (4) Increased skin cancer Capacitation refers to changes in the : (1) Ovum before fertilization (2) Ovum after fertilization (3) Sperm after fertilization (4) Sperm before fertilization Most animals are tree dwellers in a:- (2) Thom woodland (2) Temperate deciduous forest (3) Tropical rain forest (4) Coniferous forest True nucleus is absent in = (1) Mucor (2) Vaucheria (3) Voliox (4) Anabaena Glenoid cavity articulates - (2) Scapula with acromion (2) Clavicle with scapula (3) Humerus with scapula (4) Clavicle with acromion Transmission tissue is characteristic feature of = (2) Solid style (2) Dry stigma (3) Wet stigma (4) Hollow style DNA is net present in :- (1) Ribosomes (2) Nucleus (3) Mitochondria (4) Chloroplast Gene regulation governing lactose operon of Ecol that involves the lac I gene product is (1) Negative and inducible because repressor protein prevents transcription (2) Negative and repressible because repressor protein prevents transcription (3) Feedback inhibition because excess of B-galactosidase can switch off traseription (4) Positive and inducible because it can be induced by lactose an AIPMT - 2015 I a AMA 2015 30. Which ofthe folowing does not favourthe formation | 134. Keel isthe characteristic feature of lower of = of large quantities of dilute urine ? () Indigofera (2) Aloe (1) Caffeine (2) Renin (8) Tomato (4) Tap (3) Atriaknatriuretic factor (4) Alcohol Wp eer reser () Cucumber (2) China rose 91. Win cunsa gran lant xvod tothe ight on ae aa Gnizone sie, to bend found the source of IM 25 | 436, A, chemical signal that has both endocrine and a neural roles is ? (2) Green plants seek light because they are (a) Caletonin (2) Epinephrine Phototropic (3) Cortisol (4) Melatonin (2) Light stimulates plant cells on the lighted side to | 187. In which of the following both pairs have correct grow faster coinbination = (3) Auxin accumulates on the shaded side, (1) dnsitu conservation : Cryopreservation stimulating greater cell elongation there. Ex situ conservation : Wildlife Sanctuary (2) In stu conservation : Seed Bank (4) Green plants needight to perform thesis a era mania Ex situ conservation : National Park 32, Nuclear envelope is a derivative of = nt ree aaee (1) Membrane of Golgi complex Ex situ conservation : Sacred groves (2) Microtubules (@) In stu conservation : National Park (3) Rough endoplasmic reticulum ear ere eee 138. HIV that causes AIDS, first starts destroying: (4) Smooth endoplasmic reticulum a les (33. Select the correct option :- (2) Helper T- Lymphocytes (8) Thrombocytes | pl Sree aes Fraphareit | | 189. Hysteresctomyis surgical removal of: homologous chromosomes (1) Prostate gland (6) | Synthesis of RNA and Zygotene (2) Vas-deference protein (@) Mammary glands fe) | Action of enayme Gyphase (4) Uterus recopnbinase 140. Removal of proximal convoluted tubule from the fd) | Centromeres do not (0) [Anaphase? nephron wil result in separate but chromatids (1) More concentrated urine = (2)No change in quality and quantity of urine (3) No urine formation (4) Pechatene (4) More diluted urine ue ee 141. A major characteristic of the monocot root isthe ° presence of : A (1) Scattered vascular bundles 20 @ o Ww (2) Vasculature without cambium eo a) ww (3) Cambium sandwiched between phloem and 0 0 ww) penbrtheriee = (4) Open vascular bundles —— 177 AIPMT - 2015 142. 143. 144, 145. 146. 147. 148. 149. 178 Which of the following characteristics Is mainly responsible for diversification of insects on land ? (1) Bilateral symmetry (2) Exoskeleton (3) Eyes (4) Segmentation ‘Which of the following cells during gametogenesis is normally dipoid? (1) Spermatid (2) Spermatogonia (3) Secondary polar body (4) Primary polar body The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are (1) Grana (2) Stroma lamellae (3) Stroma (4) Cristae | The chromosomes in which centromere is situated close to one end are: (1) Acrocentric (2) Telocentric (3) Sub-metacentric (4) Metacentric Ina ring girdled plant: () The root dies first (2) The shoot and root die together (8) Neither root nor shoot will die (4) The shoot dies first ‘Vertical distribution of different species occupying different levels in a biotic community is known as: (1) Stratification (2)Zonation (3) Pyramid (4) Divergence Multiple alleles are present : (1) At different loci on the same chromosome (2) At the same locus of the chromosome (3) On non-sister chromatids (4) On different chromosomes ‘The mass of living material at a trophic level at a particular time is called : (1) Standing state (2) Net primary productivity (3) Standing crop (4) Gross primary productivity oe ALLER 50. Which of the following animals is not viviparous? 151. 152. 153. 154. 155. 156. (1) Elephant (2) Platypus (3) Whale (4) Flying fox (Bat) |. In an ecosystem the rate of production of organic ‘matter during photosynthesis is termed as: (1) Gross primary productivity (2) Secondary productivity (3) Net productivity (4) Net primary productivity 2. Erythropoiesis starts in : (1) Liver (2) Spleen (3) Red bone marrow (4) Kidney ‘Which is the most common mechanism of genetic variation in the population of sexually reproducing organism? (1) Chromosomal aberrations (2) Genetic drift (8)Recombination (4) Transduction Blood pressure in the mammalian aorta is ‘maximum during (1) Diastole of the right ventricle (2) Systole of the left ventricle (3) Diastole of the right atrium (4) Systole of the left atrium When you hold your breath, which of the following {gas changes in blood would first lead to the urge 10 breathe? (1) rising CO, concentration (2) falling CO, concentration (3) rising CO, and falling O, concentration (4) falling ©, concentration ‘Vascular bundles in monocotyledons are considered closed because: (1) Cambium is absent (2) There are no vessels with perforations (3) Xylem is surrounded all around by phloem (@) A bundle sheath surrounds each bundle (Qe Ll AIPMT - 2015 MT 2015 $57. Male gemetes are Tagellated in 164. The terga, stera and ploura of cockronc (1) Anabaena panel By mons Baws a (2) Ectocarpus (1) Muscular tissue 8) Spirogyra (2) Arthrodial membrane (4) Pobssiphonia (3) Cartilage 158. Which one of the following may require pollinators, (4) Cementing glue but is genetically similar to autogamy ? 165. Which of the following represents the correct (1) Xenogamy combination without any exception? (2) Apogamy aa cae (3) Cleistogamy (4) Geitonogamy | Sereda skits pacog | onanetves 159. In ginger vegetative propagation occurs through: cols peiieat notochord (Offseta | Senotenert wihow sede, [Oo (2) Bulbils paired appendages i (3) Runners (2) | Body covered with feathers; dn [Aver (4) Rhizome tom argent sr ct . Which one of isnot an inclusion Mo redtnktetae ential a Tera | ’ ne 166. Which one ofthe folowing statementsin incorrect? @)Pclyeome (1) In competitive inhibition, the inhibitor moleale is not chemically changed by the enzyme. (2) The competitive inhibitor does not affect the rate of breakdown of the enzyme-substrate (4) Phosphate granule 161. A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has complex. (1) same number of chromosomes but twice the (3) The presence of the competitive inhibitor amount of DNA. decreases the Km of the enzyme for the (2) twice the number of chromosomesand four times oe the amount of DNA (4) A competitive inhibitor reacts reversibly withthe (3) four times the number of chromosomes and twice ‘enzyme to form an enzyme- inhibitor complex. the amount of DNA 167. Which of the following regions of the brain is (4) twice the number of chromosomes and twice the incorrectly paired with its function? amount of DNA (1) Cerebellum- language comprehension 162, Alleles are’: (2) Corpus callosum-communication between the lft (1) true breeding homozygotes ‘and right cerebral cortices (2) different molecular forms of a gene (3) Cerebrum- calculation and contemplation (3) heterozygotes (4) Medtlla oblongata - homeostatic control (4) different phenotype 168. Which one of the following statements is not true? 163, Select the correct matching in the following pairs: (1) Pollen grains of some plants cause severe allergies and bronchial afflictions in some people {Gisirooth ER = Gousheds af Wes (2) The flowers pollinated by fies and bats secrete (2) Rough ER- Synthesis of ayoogen foul odour to attract them ( is made by bees by digesting - pollen (3) Rough ER ~ Oxidation of fatty acids 3) Honey ae by dig (4) Smooth ER ~ Oxidation of phospholipids (4) Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups ene 179 AIPMT - 2015 169. The active from of Entamoeba histolytica feeds upon: (1) mucosa and submucosa of colon only (2) food in intestine (3) blood only (4) erythrocytes; mucosa and submucosa of colon Which of the following viruses is not transferred. through semen of an infected male? 170. (1) Human immunodeficiency virus + (2) Chikungunya virus (3) Ebola virus (4) Hepatitis B virus 171. A population will not exist in Hardy - Weinberg ‘equilibrium if (2) There are no mutations (2) There is no migration {G) The population is large (4) Individuals mate selectively The guts of cow and buffalo possess: (1) Chlorelia spp. (2)Methanogens (3) Cyanobacteria (4) Fucus spp. 173. The hilum is a scar on the : (1) Fruit, where it was attached to pedicel (2) Fruit, where style was present (3) Seed, where micropyle was present (4) Seed, where funicle was attached Secondary Succession takes place on/in : (1) Degraded forest (2) Newly created pond @) Newly cooled lava (4) Bare rock 175. Which one of the following statements is wrong? (1) Agar - agar is obtained from Gelidlum and Gracilaria (2) Chlorelia and Spirulina are used as space food (3) Mannitol is stored food in Rodophyceae (@) Algin and carragen are products of algae 172. 174, 180 coms ALLE 176. The following graph depicts changes in two populations (A and B) of herbivores in a grassy field ‘A possible reason for these changes is that Rc Nab of Copier (1) Population B competed more successfully for food than population A (2) Population A produced more offspring than population B (3) Population A consumed the members of population B (4) Both plant populations in this habitat decreased 177; Match each disease with its correct type of vaccine: (@) tuberculosis, () harmless virus (0) whooping cough _{ti) inactivated toxin (0 diphtheria (Gi) killed bacteria (@ polio (iv) harmless bacteria e. © © @ yi) i) w) w (2) 0). i “Gi @ aa ) w) (ii) ai @ ao) tw) 178. Which of the following are the important floral rewards to the animal pollinators? (2) Nectar and pollen grains (2) Floral fragrance and calcium crystals, (G) Protein pellicle and stigmatic exudates (4) Colour and large size flower 179. An abnormal human baby with 'XKX' sex ‘chromosomes was born due to (2) formation of abnormal ova in the mother (2 fusion of two ova and one sperm {G) fusion of two sperms and one ovum, (4) formation of abnormal sperms in the father 180. Transpiration and root pressure cause water to rise in plants by : (1) Pulling and pushing it, respectively (2) Pushing it upward (@) Pushing and pulling it, respectively (4) Pushing it upward @ eee Al PMT - 201 3. B= AES Here N= 1 makes onlyone loop) yim'eatnct aUencyaT &@ T= asvaee _ 4. v= pe™ © AT=7,-1, =P RY ae 8 agg ct so & 2 0p au-2R (ReacBh) Nowa = vt = (px -2np x) =asinat 2 = a=-2np?x tt & yp = bcos at =bsin(ot + 5) 5. Reale since the frequencies for both SHM are same, vs resultant motion will be SHM. Now Ry -( 27) J Ry, 125 Amplitude A= JAY +Az+2A,A, cos .Ay=b& b= F 5 here A, =Rne Ry so A= Jaret 181 AIPMT ~ 2015 ALLEN re ne EEE 6. Angular fringe width of interference in double sit Potential drop across the potentiometer wire aD 8x2_ 16 experiment = B= —d BYR 8+R D Dd Angular width of central maxima in diffraction Potential gradient = ol According to the question oe = R-320 hh 11. For Hike atoms 34 =0.2d=0.2 mm v= 2 12.188 x 10° m/s 7. Linear width of central maxima = D (20) = 2D9 here 2 = 2, n= 3 - v= 1.46 x 10° m/s a ob 12. 'B due to segment 'l’ By = Pah sin 90°+ sin) Kd) vol 2 Bie 4aR B due to segment v ‘e _ B= $2 iy at center B, 8. Metallic conductor can be considered as the 26-3 (1.2) combination of various conductors connected in series combination. And in series combination the he . current always remains constant. 13, p-E spat 14. Once the capacitor is charged, its charge will be constant Q = CV When dielectric slab is inserted 9. From Wein's displacement law Gree = KC 1 2 «i 1 eT B= Sew En Now from sequence ‘VIBGYOR' Ogle < Ogle < Ola v= 2 oVuu0= tv $0 Tp>Ta>T, c ie p> Te? Ta 15. Fundamental frequency of closed organ Inv | ee 2 10, Potent gradient = #2Y — 108 V/em = 10°V/ Pipe = gr Let the resistance to be connected is R then 2nd overtone frequency of open organ pipe = = 2 + sya 6eezoen= ae Now gia = Ff = 6 620 cm) = 120m 182 Oe eee LE sin(®= 24 «ve UE sin( 4) = cot (A/2) sin( 2a cot (A/2) 2. => 08 (A/2) = sin (34) = 90"-A/2 = Sach Hence this logic gate represents AND gate. 18. For Engine & refrigerators operating between two same temperatures —_ “Tp B=-)> (From the principle of refrigerator) on Tg 2 Oz = 90 Joule hehe 19. eVe=E- $= Vc = ig (a) AIPMT - 2015 B/C E/C Momentum of light p = c ‘So momentum transferred to the surface 2E =P R= & 21. Angular momentum remains Constant because of the torque of tension is zero. = li- R = GR = my = v= 2 KE= zw) =2mv3 n= 1.7 22. a|- & (2) ae ‘equation (1) ~ 3 x equation (2) > he | 2he 2 Ona tie thera > So 183 AIPMT - 2015 24. 184 en seers eeee ome? Ald iA 26. mg For the motion of both blocks mg -T = ma 27. TH mg = mya 2 = For the block of mass 'm,! mmg—T =m, [Ba le ™m +m, For particle undergoing SHM. Volar ¥en a y,- adr solving these two equations we get 28. 10 key t ~ & 5 wh ge \ Bor 2 ae Vi0? +10? = 10/2 kmph distance OB = 100 cos45% 50/2 km Time taken to reach the shortest distance between S0v2 _ 50V2 A&B ty = Shs, By torque balancing about B Nyld) = Wid-x) wid Naa As we know - wee 2 VB B = 10° x9.8 x2700 x45.4 x10" = 1.201 x107 Energy will always be conserved so K. Boga) = K-Esjny + Excitation energy 1 24 liny? mvj +om,v3 +e 2 Ammyut +dmgud = Berg eee M. we. =o [234] «25 From work energy theorem W = Ky~K, = -25=K,- $1000? = Ky= 475 By Bernaulli’s equation. 1 Patpv'= Py +0 R-P=ipv 1 at pva 3 = 2.4 x 105 upward 12k, Initial distance between their centers = 12 R At time of collision the distance between their AIPMT — 2015 33. Pure resistor Resistor & Inductor (Phasor diagram) cuit circuit ; R " | i 8 2 AC source: Impedance = Z centers = 3R yea? So total distance travelled by both=12R-3R = 9R ‘Since the bodies move under mutual forces, center | 35. In cyclic process ABCA, cof mass will remain stationary so AU yao = 0 myx, = MX mx = 5m(9R -) aes Qyg + Que + Acq = closed loop area. 6x = 45R 1 400 + 100 + Qoq = 5 x (2x 10°) x4 x 104 45, . poe S 400 + 100 -Qqe = 40 x =7.5R Qqe= 4605 sn cum 185 AIPMT - 2015 36. 37. 38. 39. 186 ‘Applying dimensional analysis Sa BVT MIOT? = IMT eT Pre MILT? = k IML?) TTS Comparision 2a+b °| - 2a-b+e AM) +246 a=] c=? So the dimensional formula for surface tension wall belE'V7T 4} Alternate solution : Surface energy ‘Area -EVT) Thisis the circuit where P-N junction is acting as @ Hall-wave rectifier so the output will be Surface Tension = [Surface tension) = yt BV od ceelerat em = Acceleration of system = ys, 4 " aa2e1 ‘The contact force between 4 kg & 2 kg block will move 2 kg & 1 kg block with the same acceleration $0 Fesnna (2 + Ya = 3(2) = 6N = 2 m/s? (1.5R)3R) Effective resistance of B & C= Tan, an In series sequence V « R 80 voltage across ‘A’ = voltage across B & C Now B & C are parallel so Vp = Ve = Va=Vp=Ve 41. 42. (Using parallel axis theorem) = Igy = 2mr? + 2mr? = 4m? Flux linked with sphere = £.d5 since electric field is radial. Itis always perpendicular to the surface. © ¢=Ar(4m") $= Allan?) fas =a) = Adra® Now according to gauss law + r = an = 6&0 $0 qn = Ada? € Rate of heat flow « temperature difference between two ends 90 cr, - 2 Gem Here temperature diffemece in both case is same (ie. 10°C) So, rate of heat flow will also be same 4Q $0, G = 4 u/s ALLE 43, 44. Given Kp > Ko Case a): xy = xz = x Akt = Wy > We Z|é volo PIR fe EK ox Case (o): Fy = Fy = For constant force ry aa] po ert emf Induced in side (1) = Be ‘emf Induced is side (2) f= Be emf in the frame = ByV¢ ~ B2V¢ = Ve[B, - Bd) => exB,-B, So ex|—— ae) 2 “lear esa eee AIPMT - 2015 45. = fod fat cat GH- cH cH, Br 47. Volume of nitrogen collected at 300 K and 725 rm pressure is 40 mL. actual pressure = 725-25 = 700 mm Volume of nitrogen at STP 273 x700 x40 = 28% 700 x40 2 33.52mL. 300x760 ~* 22,400 ml. of N, at STP weight = 28 q 2833.52 33.5 mL of nitrogen weight = Sans —3 Percentage of nitrogen 28% 33.52%100 0. 16.76% 22400 0.25 1e1g 48. 9,010, +K,, =[Aa"} [C10,"] so answer is Ag,CrO, 187 AIPMT - 2015 49. 53. 54. 188 Bi thionol (the compound is also called bithional) is added to soaps to impart antiseptic properties cl. OH HO. cl ore Bithionol Metal nitrates are stable like NaNO, and KNO, and highly soluble in water. According to molecular orbital theory (MOT) O; 0; oF Noofe 17 15 14 Bond order 15 25 3.0 In isoelectronic species 1 Atomic radus 7 - hence increasing order of radius is Ca"? 21" +3802 son=5, K,[Fe(CN).] + 4K* +[Fe(CN),]* son=5=>i=n=5 NO, is not used as food preservative. me _ FH Total x bonds = 4 eye ne ay, Total x electrons =8 Geer ene) AIPMT - 2015 ATO ene Sn Se RE TN eS 65. Due to very small size of Mg*#, Mg*? shows | 7 ‘maximum hydration energy. | ‘A device that converts eneray of combustion of fuels, directly into electrical energy is known as fuel cell. MgSO,> CaSO, > S150, > BaSO, oh, e MaSO.> CaSO, > S150, > Bas h ft ‘ zoe nef) nbn Chem * H 66. NO,; : sp hybridisation (bond angle = 1809 2) a cr) _ Mes o Only (li) has H in conjugation with free radical NO} total p electrons = 11, which are not equal to [CotNH,),Cl,] “42+ no ppt number of ‘d’ electrons in Fe*® Ma 2, Oe eee mg, tea 15 tH 1/2 _ HC, ge BS, We, 4g, 4/82" 1 a 6K = ah 75. Fe +5CO->[Fe*(CO)s] HC cH, HC cH, sinensis icine t-butyl carbonium ion No change in the oxidation state of iron 76. Due tolanthanotd contraction — H -_ 4 atomic radii of Zr and Hf is almost similar. C ppb =a Cpe 77. AG? =-2.30RTlogk ° because at equilibrium AG =( benzylecarboniumion 1 7g Orbital angular momentum = e(esI).A {stable de to resonance] for d-orbital (=2 so orbital angular momentum = /2@2+i)n = Vén 79. (AT), >(AT,), same solvent so, K, is same mis same (given) i,-k,-m>i,-k,-m=i, >i, K so, x is undergoing dissociation in water. Secon chon fn 80. _K' ion is a constituent of sodium pump {isopropyl carbon ion) Most stable carbonium ion is benzyl carbocation due tomsonene fon 81. R—CH=CH-R +H, (1 mole) ‘ \ Ors —O= R—CH>CH;R + AH enthalpy of hydrogenation Sabjigy of alkene Gener 189 AIPMT - 2015 oe ail ‘BT. Tyndall effect is an optical property. 0 It is HOH HOH independent of charge 2. nota bt HC cH, eH GCG OGG 88. Hc. cH HO-H OO HH i — lu o+2n 18 7 by 83. Nylon 2-Nylon-6 is an alternating polyamide ° ea ‘copolymer of glycine (NH,-CH,-COOH) and amino CH, : caproic acid (NH,-(CH,),COOH) and is cH, cH, biodegradable — H 3 | ou i cH, cH, cH, a cH number of x bonds = 4 o ° 85. [CofC ty = 2923 for frst order ty is independent of Cot? = Bd® 43° ap? 89. tan K " ie “sin presence of strong field ligand, pairing of concentration electrons occurs so in this complex no unpaired ie electrons present and itislow spin comple | gy HC otf 86. For an ideal solution AS,,, > 0 : Do ot ee zone. : 190 ey

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