AIPMT 2011 Prelims | NEET Year Wise Previous Years Questions

Biology

Chemistry

1. The total number of atomic orbitals in fourth energy level of an atom is 2. The energies E1 and E2 of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e., 3. In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D. 4. What is the product obtained in the following reaction? 5. Which one of the following statements is not true regarding (+) lactose? 6. The freezing point depression constant for water is $$-$$1.86o C m$$-$$1. If 5.00 g Na2SO4 is dissolved in 45.0 g H2O, t 7. The van't Hoff factor $$i$$ for a compound which undergoes dissociation in one solvent and association in other solvent 8. Standard electrode potential of three metals X, Y and Z are $$-$$1.2 V, + 0.5 V and $$-$$ 3.0 V respectively. The reduci 9. Standard electrode potential for Sn4+/Sn2+ couple is + 0.15 V and that for the Cr3+/Cr couple is $$-$$ 0.74 V. These two 10. The electrode potentials for Cu2+(aq) + e$$-$$ $$ \to $$ Cu+(aq) and Cu+(aq) + e$$-$$ $$ \to $$ Cu(s) are + 0.15 V an 11. Which one of the following statements for the order of a reaction is incorrect? 12. Name the two type of the structure of silicate in which one oxygen atom of [SiO4]4$$-$$ is shared? 13. Clemmensen reduction of a ketone is carried out in the presence of which of the following? 14. For the four successive transition elements (Cr, Mn, Fe and Co), the stability of + 2 oxidation state will be there in w 15. Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. This is due to the formation of 16. The complex, [Pt(Py)(NH3)BrCl] will have how many geometrical isomers ? 17. The d-electron configurations of Cr2+, Mn2+, Fe2+ and Co2+ are d4, d5, d6 and d7 respectively. Which one of the followin 18. The complexes [Co(NH3)6] [Cr(CN)6] and [Cr(NH3)6] [Co(CN)6] are the examples of which type of isomerism? 19. Of the following complex ions, which is diamagnetic in nature? 20. Which of the following carbonyls will have the strongest C $$-$$ O bond? 21. Which of the following complex compounds will exhibit highest paramagnetic behaviour? 22. A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of NH+4 is 0.20 M. If t 23. If n = 6, the correct sequence for filling of electrons will be 24. Which of the following has the minimum bond length ? 25. The correct order of increasing bond length of C $$-$$ H, C $$-$$ O, C $$-$$ C and C$$=$$C is 26. Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of or 27. The pairs of species of oxygen and their magnetic behavior are noted below. Which of the following presents the correct 28. If the enthalpy change for the transition of liquid water to steam is 30 kJ mol$$-$$1 at 27oC, the entropy change for th 29. Enthalpy change for the reaction, 4H(g)  $$ \to $$  2H2(g) is $$-$$869.6 kJ The dissociation energ 30. Which of the following is correct option for free expansion of an ideal gas under adiabatic condition ? 31. The value of $$\Delta $$H for the reaction X2(g) + 4Y2(g) $$\rightleftharpoons$$ 2XY4(g) is less than zero. Formation 32. For the reaction, N2(g) + O2(g) $$\rightleftharpoons$$ 2NO(g), the equilibrium constant is K1. The equilibrium constant 33. Which of the following is least likely to behave as Lewis base? 34. Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear ? 35. The correct IUPAC name for the compound is 36. Which one of the following is most reactive towards electrophilic reagent? 37. Which one is a nucleophilic substitution reaction among the following ? 38. The Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so it 39. In the following reactions, the major products (A) and (C) are respectively

Physics

1. In photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of most energetic electrons i 2. There are four light-weight-rod samples A, B, C, D separately suspended by threads. A bar magnet is slowly brought near 3. An ac voltage is applied to a resistance R and an inductor L in series. If R and the inductive reactance are both equal 4. In the ac circuit an alternating voltage e = $$200\sqrt 2 $$sin100t volts is connected to a capacitor of capacity 1 $$\m 5. The current $$i$$ in a coil varies with time as shown in the figure. The variation of induced emf with time would be 6. The electric and the magnetic field, associated with an e.m. wave, propagating along the +z-axis, can be represented by 7. The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is 8. Which of the following is not due to total internal reflection ? 9. A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options describe best the image 10. Photoelectric emission occurs only when the incident light has more than a certain minimum 11. Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively illuminate a metallic surfac 12. Electrons used in an electron microscope are accelerated by a voltage of 25 kV. If the voltage is increased to 100 kV th 13. A current carrying closed loop in the form of a right angle isosceles triangle ABC is placed in uniform magnetic field a 14. The wavelength of the first line of Lyman series for hydrogen atom is equal to that of the second line of Balmer series 15. The power obtained in a reactor using U235 disintegration is 1000 kW. The mass decay of U235 per hour is 16. Fusion reaction takes place at high temperature because 17. Symbolic representation of four logic gates are shown as Pick out which ones are for AND, NAND and NOT gates, respecti 18. If a small amount of antimony is added to germanium crystal 19. In forward biasing of the p-n junction 20. A planet moving along an elliptical orbit is closest to the sun at a distance r1 and farthest away at a distance of r2. 21. A boy standing at the top of a tower of 20 m height drops a stone. Assuming g = 10 m s$$-$$2, the velocity with which i 22. A particle moves in a circle of radius 5 cm with constant speed and time period 0.2$$\pi $$ s. The acceleration of the p 23. A missile is fired for maximum range with an initial velocity of 20 m/s. If g = 10 m/s2, the range of the missile is 24. A body is moving with velocity 30 m/s towards east . After 10 seconds its velocity becomes 40 m/s towards north. The a 25. A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving u 26. A body of mass M hits normally a rigid wall with velocity V and bounces back with the same velocity. The impulse experi 27. The potential energy of a system increases if work is done 28. Force F on a particle moving in a straight line varies with distance d as shown in figure. The work done on the partic 29. A body projected vertically from the earth reaches a height equal to earth's radius before returning to the earth. The p 30. A particle of mass m is released from rest and follows a parabolic path as shown. Assuming that the displacement of the 31. The instantaneous angular position of a point on a rotating wheel is given by the equation $$\theta \left( t \right) = 2 32. The moment of inertia of a thin uniform rod of mass M and length L about an axis passing through its midpoint and perpen 33. During an isothermal expansion, a confined ideal gas does $$-$$ 150 J of work against its surroundings. This implies tha 34. When 1 kg of ice at 0oC melts to water at 0oC, the resulting change in its entropy, taking latent heat of ice to be 80 35. Out of the following functions representing motion of a particle which represents SHM (1)  y = sin$$\omega $$t 36. Two waves are represented by the equations y1 = $$a$$sin($$\omega $$t + kx + 0.57) m and y2 = acos($$\omega $$t + kx) 37. Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave 38. A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the p 39. Four electric charges +q, +q, $$-$$ q and $$-$$ q are placed at the corners of a square of side 2L (see figure). The ele 40. A charge Q is enclosed by a Gaussian spherical surface of radius R. If the radius is doubled, then the outward electric 41. A current of 2 A flows through a 2 $$\Omega $$ resistor when connected across a battery a 2 $$\Omega $$ resistor when co 42. If power dissipated in the 9 $$\Omega $$ resistor in the circuit shown is 36 watt, the potential difference across the 2 43. A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an ele 44. The dimensions of $${\left( {{\mu _0}{\varepsilon _0}} \right)^{ - 1/2}}$$ are

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

A buffer solution is prepared in which the concentration of NH₃ is 0.30 M and the concentration of NH⁺₄ is 0.20 M. If the equilibrium constant, K_b for NH₃ equals 1.8 $$ \times $$ 10^$$-$$5, what is the pH of this solution? (log 2.7 = 0.43)