AIPMT 2005 | NEET Year Wise Previous Years Questions

Biology

Chemistry

1. The energy of second Bohr orbit of the hydrogen atom is $$-$$328 kJ mol$$-$$1; hence the energy of fourth Bohr orbit wou 2. Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of t 3. The correct order in which the O $$-$$ O bond length increases in the following is 4. Which of the following molecules has trigonal planar geometry? 5. The surface tension of which of the following liquid is maximum ? 6. Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction ? 7. A reaction occurs spontaneously if 8. The absolute enthalpy of neutralisation of the reaction : Mg(O)(s) + 2HCl(aq) $$ \to $$ MgCl2(aq) + H2O(l) will be 9. At 25oC, the dissociation constant of a base, BOH, is 1.0 $$ \times $$ 10$$-$$12. The concentration of hydroxyl ions in 10. H2S gas when passed through a solution of cations containing HCl precipitates the cations of second group of qualitative 11. Equilibrium constants K1 and K2 for the following equilibriam: are related as 12. Names of some compounds are given. Which one is not in IUPAC system? 13. The chirality of the compound 14. Which one of the following pairs represents stereoisomerism? 15. Which amongst the following is the most stable carbocation? 16. Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism? 17. The best method for the separation of naphthalene and benzoic acid from their mixture is 18. Products of the following reaction : 19. Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions ? 20. Which one of the following compounds is most acidic? 21. The correct sequence of increasing covalent character is represented by 22. The major organic product formed from the following reaction : is 23. In a set of reactions acetic acid yielded a product D. The structure of D would be 24. Electrolytic reduction of nitrobenzene in weakly acidic medium gives 25. Aniline in a set of reactions yielded a product D. The structure of the product D would be 26. The cell membranes are mainly composed of 27. Which functional group participates in disulphide bond formation in proteins? 28. The vapour pressure of two liquids P and Q are 80 and 60 torr, respectively. The total vapour pressure of solution obtai 29. The mole fraction of the solute in one molal aqueous solution is 30. A solution has a 1 : 4 mole ratio of pentane to hexane. The vapour pressures of the pure hydrocarbons at 20oC are 440 mm 31. A solution of urea (mol. mass 56 g mol$$-$$1) boils at 100.18oC at the atmospheric pressure. If Kf and Kb for water are 32. 4.5 g of aluminium (at. mass 27 amu) is deposited at cathode from Al3+ solution by a certain quantity of electric charge 33. The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of aluminium metal from bauxi 34. The rate of reaction between two reactions A and B decreases by a factor of 4 if the concentration of reactant B is doub 35. For a first order reaction A $$ \to $$ B the reaction rate a reactant concentration of 0.01 M is found to be 2.0 $$ \tim 36. Which one of the following oxides is expected to exhibit paramagnetic behaviour? 37. Which of the following would have a permanent dipole moment? 38. What is the correct relationship between the pH of isomolar solutions of sodium oxide, Na2O (pH1), sodium sulphide, Na2S 39. More number of oxidation states are exhibited by the actinoids than by the lanthanoids. The main reason for this is 40. The number of moles of KMnO4 reduced by one mole of KI in alkaline medium is 41. The aqueous solution containing which one of the following ions will be colourless? (Atomic number : Sc = 21, Fe = 26, 42. Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of th 43. A nuclide of an alkaline earth metal undergoes radioactive decay by emission of the periodic table to which the resultin 44. Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? 45. Which one of the following is expected to exhibit optical isomerism? (en = ethylenediamine) 46. Which one of the following orders correctly represents the increasing acid strengths of the given acids?

Physics

1. The ratio of the dimensions of Planck's constant and that of moment of inertia is the dimensions of 2. A ball is thrown vertically upward. It has a speed of 10 m/sec when it has reached one half of its maximum height. How h 3. The displacement x of a particle varies with time t as x = ae$$-$$at + be$$\beta $$t, where a, b, $$\alpha $$ and $$\bet 4. Two boys are standing at the ends A and B of a ground where AB = a. The boy at B starts running in a direction perpen 5. A stone tied to the end of a string of 1 m long is whirled in a horizontal circle with a constant speed. If the stone 6. If the angle between the vectors $$\overrightarrow A $$ and $$\overrightarrow B $$ is $$\theta $$, the value of the pro 7. If a vector $$2\widehat i + 3\widehat j + 8\widehat k$$ is perpendicular to the vector $$4\widehat j - 4\widehat i + \al 8. A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18 kg mass is 6 m s$$-$ 9. A force F acting on an object varies with distance x as shown here. The force is in N and x in m. The work done by the 10. A drum of radius R and mass M, rolls down without slipping along an inclined plane of angle $$\theta $$. The frictional 11. The moment of inertia of a uniform circular disc of radius R and mass M about an axis passing from the edge of the disc 12. Two bodies have their moments of inertia I and 2I respectively about their axis of rotation. If their kinetic energies o 13. Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the ac 14. For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is 15. Which of the following rods, (given radius r and length $$l$$) each made of the same material and whose ends are maintai 16. An ideal gas heat engine operates in Carnot cycle between 227oC and 127oC. It absorbs 6 $$ \times $$ 104 cal of heat at 17. Which of the following processes is reversible? 18. The circular motion of a particle with constant speed is 19. A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at distances of 2 20. A network of four capacitors of capacity equal to C1 = C, C2 = 2C, C3 = 3C and C4 = 4C are connected to a battery as sho 21. Two charges q1 and q2 are placed 30 cm apart, as shown in the figure. A third charge q3 is moved along the arc of a cir 22. As per the diagram a point charge +q is placed at the origin O. Work done in taking another point charge $$-$$Q from th 23. Two batteries, one of emf 18 volts and internal resistance 2 $$\Omega $$ and the other of emf 12 volts and internal resi 24. A 5-ampere fuse wire can withstand a maximum power of 1 watt in the circuit. The resistance of the fuse wire is 25. For the network shown in the figure the value of the current $$i$$ is 26. When a wire of uniform cross-section $$a$$ length $$l$$ and resistance R is bent into a complete circle. resistance betw 27. An electron moves in a circular orbit with a uniform speed v. It producess a magnetic field B at the centre of the circl 28. A very long straight wire carries a current $$I$$. At the instant when a charge +Q at point P has velocity $$\overrighta 29. A coil in the shape of an equilateral triangle of side $$l$$ is suspended between the pole pieces of a permanent magnet 30. If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are d 31. In a circuit L, C and R are connected in series with an alternating voltage source of frquency $$f.$$ The current leads 32. As a result of change in the magnetic flux linked to the closed loop as shown in the figure, an e.m.f. $$V$$ volt is ind 33. If $$\lambda $$v, $$\lambda $$x and $$\lambda $$m represent the wavelengths of visible light, X-rays and microwaves resp 34. The angular resolution of a 10 cm diameter telescope at a wavelength of 5000 $$\mathop A\limits^ \circ $$ is of the ord 35. The work functions for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein's equation the 36. A photosensitive metallic surface has work function, h$$\upsilon $$0. If photons of energy $$2h{\upsilon _0}$$ fall on t 37. The total energy of an electron in the first excited state of hydrogen atom is about $$-$$ 3.4 eV. Its kinetic energy in 38. In the reaction $${}_1^2$$H + $${}_1^3$$H $$ \to $$ $${}_2^4$$He + $${}_0^1$$n, if the binding energies of $${}_1^2$$ H, 39. In any fission process the ratio mass of fission products mass of parent nucleus is 40. Fission of nuclei is possible because the binding energy per nucleon in them 41. Energy levels A, B and C of a certain atom corresponding to increasing values of energy i.e. EA < EB < EC. If $$ 42. Choose the only false statement from the following. 43. Application of a forward bias to a p-n junction 44. Zener diode is used for 45. In a p-n junction photo cell, the value of the photo-electromotive force profuced by monochromatic light is proportional 46. Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54 $$\mathop A\limits^ \circ $$. The v 47. Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated b

AIPMT 2005

MCQ (Single Correct Answer)

-1

Which of the following rods, (given radius r and length $$l$$) each made of the same material and whose ends are maintained at the same temperature will conduct most heat ?

r = r₀, $$l$$ = $$l$$₀

r = 2r₀, $$l$$ = $$l$$₀

r = r₀, $$l$$ = 2$$l$$₀

r = 2r₀, $$l$$ = 2$$l$$₀

AIPMT 2005

MCQ (Single Correct Answer)

-1

An ideal gas heat engine operates in Carnot cycle between 227^oC and 127^oC. It absorbs 6 $$ \times $$ 10⁴ cal of heat at higher temperature. Amount of heat converted to work is

4.8 $$ \times $$ 10⁴ cal

6 $$ \times $$ 10⁴ cal

2.4 $$ \times $$ 10⁴ cal

1.2 $$ \times $$ 10⁴ cal.

AIPMT 2005

MCQ (Single Correct Answer)

-1

Which of the following processes is reversible?

Transfer of heat by conduction

Transfer of heat by radiation

Isothermal compression

Electrical heating of a nichrome wire.