AIPMT 2004 | NEET Year Wise Previous Years Questions

Biology

Chemistry

1. The maximum number of molecules is present in 2. The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in hydrogen atom will be (Given ionizatio 3. Ionic radii are 4. In a regular octahedral molecule, MX6 the number of X $$-$$ M $$-$$ X bonds at 180o is 5. H2O is dipolar, whereas BeF2 is not. It is because 6. Among the following, the pair in which the two species are not isostructural is 7. In BrF3 molecule, the lone pairs occupy equatorial positions to minimize 8. The work done during the expansion of a gas from a volume of 4 dm3 to 6 dm3 against a constant external pressure of 3 at 9. Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are $$-$$ 382.64 kJ mol$$-$$1 and $ 10. If the bond energies of H $$-$$ H, Br $$-$$ Br, and H $$-$$ Br are 433, 192 and 364 kJ mol$$-$$1 respectively, the $$\De 11. Considering entropy (S) as a thermodynamic parameter, the criterion for the spontaneity of any process is 12. The solubility product of a sparingly soluble salt AX2 is 3.2 $$ \times $$ 10$$-$$11. Its solubility (in moles/L) is 13. The rapid change of pH near the stoichiometric point of an acid-base titration is the basis of indicator detection. pH o 14. The $$-$$ OH group of an alcohol or the $$-$$ COOH group of a carboxylic acid can be replaced by $$-$$ Cl using 15. The molecular formula of diphenyl methane, How many structural isomers are possible when one of the hydrogen is replace 16. Using anhydrous AlCl3 as catalyst, which one of the following reactions produces ethylbenzene (PhEt)? 17. Reaction of HBr with propene in the presence of peroxide gives 18. Which of the following is least reactive in a nucleophilic sibstitution reaction? 19. Which one of the following will not form a yellow precipitate on heating with an alkaline solution of iodine? 20. Which is the best description of the behaviour of bromine in the reaction given below? H2O + Br2 $$ \to $$ HOBr + HBr 21. A solid compound X on heating gives CO2 gas and a residue. The residue mixed with water forms Y. On passing an excess of 22. Which one of the following can be oxidised to the corresponding carbonyl compound? 23. In a reaction of aniline a coloured product C was obtained. The structure of C would be 24. The hormone that helps in the conversion of glucose to glycogen is 25. The correct statement in respect of protein haemoglobin is that it 26. Number of chiral carbons in $$\beta $$-$$D$$-(+) glucose is 27. A sequence of how many nucleotides in messenger RNA makes a codon for an amino acid? 28. The helical structure of protein is stablised by 29. Which of the following structures represents the peptide chain? 30. Which one of the following is a chain growth polymer? 31. A compound formed by elements X and Y crystallizes in a cubic structure in which the X atoms are at the corners of a cub 32. The standard e.m.f. of a galvanic cell involving cell reaction with n = 2 is found to be 0.295 V at 25oC. The equilibriu 33. The rate of a first order reaction is 1.5 $$ \times $$ 10$$-$$2 mol L$$-$$1 min$$-$$1 at 0.5 M concentration of the reac 34. The enzyme which hydrolyses triglycerides to fatty acids and glycerol is called 35. Which one of the following statements about the zeolite is false? 36. Among K, Ca, Fe and Zn, the element which can from more than one binary compound with chlorine is 37. Among the following series of transition metal ions, the one where all metal ions have 3d2 electronic configuration is 38. lanthanoids are 39. Which of the following forms cationic micelles above certain concentration? 40. Chloropicrin is obtained by the reaction of 41. The radioactive isotope $${}_{27}^{60}$$Co which is used in the treatment of cancer can be made by (n.p) reaction. For t 42. Which of the following coordination compounds would exhibit optical isomerism? 43. Among [Ni(CO)4], [Ni(CN)4]2$$-$$, [NiCl4]2$$-$$ species, the hybridisation states at the Ni atom are, respectively [Atom 44. Considering H2O as a weak field ligand, the number of unpaired electrons in [Mn(H2O)6]2+ will be (atomic number of Mn = 45. CN$$-$$ is a strong field ligand. This is due to the fact that 46. Which of the following does not have a metal carbon bond? 47. In an octahedral structure, the pair of $$d$$ orbitals involved in d2sp3 hybridisation is 48. Which of the following is considered to be an anticancer species?

Physics

1. The dimensions of universal gravitational constant are 2. The unit of permittyvity of free space, $${\varepsilon _0}$$, is 3. If $$\left| {\overrightarrow A \times \overrightarrow B } \right| = \sqrt 3 \overrightarrow A .\overrightarrow B $$ the 4. A block of mass m is placed on a smooth wedge of inclination $$\theta $$. The whole system is accelerated horizontally s 5. The coefficient of static friction, $$\mu $$s, between block A of mass 2 kg and the table as shown in the figure is 0.2. 6. A ball of mass 2 kg and another of mass 4 kg are dropped together from a 60 feet ball building. After a fall of 30 feet 7. A particle of mass m1 is moving with a velocity v1 and another particle of mass m2 is moving with a velocity v2. Both 8. A mass of 0.5 kg moving with a speed of 1.5 m/s on horizontal smooth surface, collides with a nearly weightless spring o 9. Three particles, each of mass m gram, are situated at the vertices of an equilateral triangle ABC of side $$l$$ cm (as s 10. A wheel having moment of inertia 2 kg m2 about its vertical axis, rotates at the rate of 60 rpm about this axis. The tor 11. Consider a system of two particles having masses m1 and m2. If the particle of mass m1 is pushed towards the mass centre 12. A round disc of moment of inertia $$I$$2 about its axis perpendicular to its plane and passing through its centre is pl 13. The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and of a circular 14. The density of a newly discovered planet is twice that of earth. The acceleration due to gravity at the surface of the p 15. If $$\lambda $$m denotes the wavelength at which the radioactive amission from a black body at a temperature TK is max 16. The equation of state for 5 g of oxygen at a pressure P and temperature T, when occupying a volume V, will be (where R 17. One mole of an ideal gas at an initial temperature of T K does 6R joule of work adiabatically. If the ratio of specific 18. Two springs of spring constants k1 and k2 are joined in series. The effective spring constant of the combination is give 19. A particle executing simple harmonic motion of amplitude 5 cm has maximum speed of 31.4 cm/s. The frequency of its oscil 20. A car is moving towards a high cliff. The driver sounds a horn of frequency $$f$$. The reflected sound heard by the dri 21. The phase difference between two waves. represented by y1 = 10$$-$$6 sin[100t + (x/50) + 0.5] m y2 = 10$$-$$6 cos[100t + 22. A bullet of mass 2 g is having a charge of 2 $$\mu $$C. Through what potential difference must it be accelerated, starti 23. An electric dipole has the magnitude of its charge as q and its dipole moment is p. It is placed in a uniform electric f 24. Five equal resistances each of resistances R are connected as shown in the figure. A battery of V volts is connected bet 25. when three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by 26. The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then 27. In India electricity is supplied for domestic use at 220 V. It is supplied at 110 V in USA. If the resistance of a 60 W 28. Resistance n, each of r ohm, when connected in parallel give an equivalent resistance of R ohm. If these resistances we 29. A 6 volt battery is connected to the terminals of a three metre long wire of uniform thickness and resistance of 100 oh 30. A galvanometer of 50 ohm resistance has 25 divisions. A current of 4 $$ \times $$ 10$$-$$4 ampere gives a deflection of 31. To convert a galvanometer into a voltmeter one should connect a 32. A coil of 40 henry inductance is connected in series with a resistance of 8 ohm and the combination is joined to the ter 33. The magnetic flux through a circuit of resistance R changes by an amount $$\Delta $$$$\phi $$ in a time $$\Delta $$t. Th 34. A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometer from two objects. The 35. The refractive index of the material of a prism is $$\sqrt 2 $$ and its refracting angle is 30o. One of the refracting s 36. A beam of light composed of red and green ray is incident obliquely at a point on the face of rectangular glass slab. Wh 37. According to Einstein's photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the f 38. If M(A; Z), Mp and Mn denote the masses of the nucleus $${}_Z^AX,$$ proton and neutron respectively in units of u (1 u = 39. A nucleus represented by the symbol $${}_Z^AX$$ has 40. If in a nuclear fusion process the masses of the fusing nuclei be m1 and m2 and the mass of the resultant nucleus be m3, 41. The Bohr model of atoms 42. The half life of radian is about 1600 years. Of 100 g of radium existing now, 25 g will remain unchanged after 43. The peak voltage in the output of a half wave diode rectifier fed with a sinusoidal signal without filter is 10 V. The d 44. In semiconductors at a room temperature 45. Of the diodes shown in the following diagrams, which one is reverse biased ? 46. The output of OR gate is 1

AIPMT 2004

MCQ (Single Correct Answer)

-1

The rate of a first order reaction is 1.5 $$ \times $$ 10^$$-$$2 mol L^$$-$$1 min^$$-$$1 at 0.5 M concentration of the reactant. The half-life of the reaction is