AIPMT 2007 | NEET Year Wise Previous Years Questions

Biology

Chemistry

1. Which one of the following orders correctly represents the increasing acid strengths of the given acids? 2. Which one of the following ions is the most stable in aqueous solution? (At. No. Ti = 22, V = 23, Cr = 24, Mn = 25) 3. Identify the incorrect statement among the following: 4. Which of the following will give a pair of enantiomorphs? (en = NH2CH2CH2NH2) 5. The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the foll 6. Which of the following anions is present in the chain structure of silicates? 7. Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has a density of 1.80 g mL$$-$$1. Volume of acid required t 8. Consider the following compounds The correct decreasing order of their reactivity towards hydrolysis is 9. Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. HCl is called 10. The product formed in Aldol condensation is 11. Which of the following represents the correct order of the acidity in the given compounds ? 12. Which one of the following on treatment with 50% aqueous sodium hydroxide yields the corresponding alcohol and acid? 13. Which of the following vitamins is water-soluble? 14. Which one of the following on reduction with lithium aluminium hydride yields a secondary amine? 15. RNA and DNA are chiral molecules, their chirality is due to 16. In the reaction : Which of the following compounds will be formed? 17. 0.5 molal aqueous solution of a weak acid (HX) is 20% ionised. If Kf for water is 1.86 K kg mol$$-$$1, the lowering in f 18. The efficiency of a fuel cell is given by 19. In a first-order reaction A $$ \to $$ B, if k is rate constant and initial concentration of the reactant A is 0.5 M, the 20. The equilibrium constant of the reaction: Cu(s) + 2Ag+(aq) $$ \to $$ Cu2+(aq) + 2Ag(s); Eo = 0.46 V at 298 K is 21. The reaction of hydrogen and iodine monochloride is given as : H2(g) + 2ICl(g) $$ \to $$ 2HCl(g) + I2(g) This reaction 22. If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximate 23. Which of the following oxidation states are the most characteristic for lead and tin respectively? 24. Consider the following reactions : (i) H+(aq) + OH$$-$$(aq) = H2O(l),  $$\Delta $$H = $$-$$ X1 kJ mol$$- 25. An element, X has the following isotopic composition: 200X : 90%  199X : 8.0%  202X : 2.0% The weig 26. Consider the following sets of quantum numbers : .tg {border-collapse:collapse;border-spacing:0;border:none;} .tg td{ 27. Which one of the following ionic species has the greatest proton affinity to form stable compound ? 28. With which of the following electronic configuration an atom has the lowest ionisation enthalpy ? 29. Identify the correct order of the size of the following : 30. The correct order of C $$-$$ O bond length among CO, CO$${_3^{2 - }}$$, CO2 is 31. In which of the following pairs, the two species are isostructural? 32. The equilibrium constants of the following are N2 + 3H2 $$\rightleftharpoons$$ 2NH3;     K1 N2 33. Given that bond energies of H $$-$$ H and Cl $$-$$ Cl are 430 kJ mol$$-$$1 and 240 kJ mol$$-$$1 respectively and $$\Delt 34. Calculate the pOH of a solution at 25oC that contains 1 $$ \times $$ 10$$-$$10 M of hydronium ions, i.e. H3O+. 35. A weak acid, HA, has a Ka of 1.00 $$ \times $$ 10$$-$$5. If 0.100 mol of this acid is dissolved in one litre of water, t 36. The order of decreasing reactivity towards an electrophilic reagent, for the following would be (i) benzene (ii) tolu 37. Which of the compound with molecular formula C5H10 yields acetone on ozonolysis? 38. CH3 $$-$$ CHCl $$-$$ CH2 $$-$$ CH3 has a chiral centre. Which one of the following represents its R-configuration? 39. For (i) I$$-$$, (ii) Cl$$-$$, (iii) Br$$-$$, the increasing order of nucleophilicity would be 40. Predict the product C obtained in the following reaction of 1-butyne. 41. If there is no rotation of plane polarised light by a compound in a specific solvent, through to be chiral, it may mean

Physics

1. A small coin is resting on the bottom of a beaker filled with liquid . A ray of light from the coin travels upto the sur 2. The resistance of an ammeter is 13 $$\Omega $$ and its scale is graduated for a current upto 100 amps. After an addition 3. The total power dissipated in watt in the circuit shown here is 4. A charged particle (charge q) is moving in a circle of radius R with uniform speed v. The associated magnetic moment $$\ 5. Under the influence of a uniform magnetic field, a charged particle moves with constant speed v in a circle of radius R. 6. Three resistances, P, Q, R each of 2$$\Omega $$ and an unknown resistance S from the four arms of a Wheatstone bridge ci 7. Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then 8. A transformer is used to light a 100 W and 110 V lamp from a 220 V mains. If the main current is 0.5 amp, the efficiency 9. The electric and magnetic field of an electromagnetic wave are 10. The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux $$\phi $$ lin 11. What is the value of inductance L for which the current is maximum in a series LCR circuit with C = 10 $$\mu $$F and $$\ 12. A hollow cylinder has a charge q coulomb within it. If $$f$$ is the electric flux in units of voltmeter associated with 13. Monochromatic light of frequency 6.0 $$ \times $$ 1014 Hz is produced by a laser. The power emitted is 2 $$ \times $$ 10 14. A beam of electron passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field 15. A 5 watt source emits monochromatic light of wavelength 5000 $$\mathop A\limits^ \circ $$. When placed 0.5 m away, it l 16. The frequency of a light wave in a material is 2 $$ \times $$ 1014 Hz and wavelength is 5000 $$\mathop A\limits^ \circ 17. In the energy band diagram of a material shown below, the open circles and filled circles denote holes and electrons res 18. The total energy of electron in the ground state of hydrogen atom is $$-$$ 13.6 eV. The kinetic energy of an electron in 19. In the following circuit, the output Y for all possible inputs A and B is expressed by the truth table. 20. A nucleus $${}_Z^AX$$ has mass represented by M(A, Z). If Mp and Mn denote the mass of proton and neutron respectively a 21. Assuming the sun to have a spherical outer surface of radius r, radiating like a black body at temperature toC, the powe 22. A particle moving along x-axis has acceleration f, at time t, given by f = f0$$\left( {1 - {t \over T}} \right),$$ where 23. The positions x of a particle with respect to time t along x-axis is given by x = 9t2 $$-$$ t3 where x is in metres and 24. Dimensions of resistance in an electrical circuit, in terms of dimension of mass M, of length L, of time T and of curre 25. $$\overrightarrow A $$ and $$\overrightarrow B $$ are two vectors and $$\theta $$ is the angle between them, if $$\left 26. A block B is pushed momentarily along a horizontaly surface with an initial velocity V. If  $$\mu $$  is the c 27. A particle starting from the origin (0, 0) moves in a straight line in the (x, y) planes. Its coordinates at a later tim 28. A uniform rod AB of length $$l$$ and mass m is free to rotate about point A. The rod is released from rest in the horizo 29. A vertical spring with force constant k is fixed on a table. A ball of mass m at a height h above the free upper end of 30. A particle of mass m moves in the XY plane with a velocity v along the straight line AB. If the angular momentum of the 31. A wheel has angular acceleration of 3.0 rad/sec2 and an initial angular speed of 2.00 rad/sec. In a time of 2 sec it has 32. For a cubic crystal structure which one of the following relations indicating the cell characteristics is correct ? 33. Two satellites of earth, S1 and S2 are moving in the same orbit. The mass of S1 is four times the mass of S2. Which one 34. A black body is at 727oC. It emits energy at a rate which is proportional to 35. A particle executes simple harmonic oscillation with an amplitude $$a$$. The period of oscillation is T. The minimum tim 36. A mass of 2.0 kg is put on a flat pan attached to a vertical spring fixed on the ground as shown in the figure. The mass 37. The phase difference between the instantaneous velocity and acceleration of a particle executing simple harmonic motion 38. The particle executing simple harmonic motion has a kinetic energy K0cos2$$\omega $$t. The maximum values of the potenti 39. An engine has an efficiency of 1/6. When the temperature of sink is reduced by 62oC, its efficiency is doubled. Temperat 40. Charges +q and $$-$$q are placed at points A and B respectively which are a distance 2L apart, C is the midnight between 41. Three point charges +q, $$-$$ 2q and + q are placed at points (x = 0, y = a, z = 0), (x = 0, y = 0, z = 0) and (x = $$a$ 42. Two condensers, one of capacity C and other of capacity C/2 are connected to a V-volt battery, as shown in the figure. T 43. Which one of the following represents forward bias diode ? 44. In a mass spectrometer used for measuring the masses of ions, the ions are initially accelerated by an electric potentia 45. A car moves from X to Y with a uniform speed vu and returns to Y with a uniform speed vd. The average speed for this rou

AIPMT 2007

MCQ (Single Correct Answer)

-1

The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux $$\phi $$ linked with the primary coil is given by $$\phi $$ = $$\phi $$₀ + 4t, where $$\phi $$ is webers, t is time in seconds and $$\phi $$₀ is a constant, the output voltage across the secondary coil is

120 volt

220 volts

30 volts

90 volts.

AIPMT 2007

MCQ (Single Correct Answer)

-1

Three point charges +q, $$-$$ 2q and + q are placed at points (x = 0, y = a, z = 0), (x = 0, y = 0, z = 0) and (x = $$a$$, y = 0, z = 0) respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are

$$\sqrt 2 qa$$ along the line joining points (x = 0, y = 0, z = 0) and (x = $$a$$, y = a, z = 0)

q$$a$$ along the line joining points (x = 0, y = 0, z = 0) and (x = $$a$$, y = a, z = 0)

$$\sqrt 2 qa$$ along +x direction

$$\sqrt 2 qa$$ along +y direction.

AIPMT 2007

MCQ (Single Correct Answer)

-1

Monochromatic light of frequency 6.0 $$ \times $$ 10¹⁴ Hz is produced by a laser. The power emitted is 2 $$ \times $$ 10^$$-$$3 W. The number of photons emitted, on the average, by the source per second is

5 $$ \times {10^{16}}$$

5 $$ \times {10^{17}}$$

5 $$ \times {10^{14}}$$

5 $$ \times {10^{15}}$$

AIPMT 2007

MCQ (Single Correct Answer)

-1

A beam of electron passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move

in a circular orbit

along a parabolic path

along a straight line

in an elliptical orbit.

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