AIIMS Previous Papers 2012

1. Chasmogamy refers to the condition where

2. Ratio of energy of photon of wavelength 3000 Å and 6000 Å is

3. Oxygen is more electronegative than sulphure, yet H₂S is acidic while H₂O is neutral. This is because

4. Or the following Fig., the lines of magnetic Induction due to a magnet SN, are given by

5. Identify the wrong statement in the following:

6. A 3 kg ball strikes a heavy rigid wall with a speed of 10 m/s at an angle of 60°. It gets reflected with the same speed and angle as shown here. If the ball is in contact with the wall for 0.2 s, what is the average force exerted on the ball by the wall?

7. Figure represents an area A = 0.5 m² situated in a uniform magnetic field

B = 2.0 weber/m² and making an angle of 60° with respect to magnetic field. The value of the magnetic flux through the area would be equal to

8. Volume of air breathed in and out during normal breathing is called

9. In the circuit shown in figure, the 5 Ω resistance develops 20.00 cal/s due to the current flowing through it. The heat developed in 2 Ω resistance (in cal/s) is

10. Which one of the following diseases in not caused by virus?

11. In the plant body, the water and minerals are transported by

12. Cuprous ion is colourless while cupric ion is coloured because

13. A constant voltage is applied between the two ends of a uniform metallic wire. Some heat is developed in it. The heat developed is double if

14. Which are exclusively viviparous?

15. X mI of H₂ gas effuse through a hole in a container in 5 seconds. The time taken for the effusion of the same volume of the gas specified below under identical condition is

16. Which gland is concerned with salt equilibrium in body?

17. The current in resistance R at resonance is

18. A conducting rod AB moves parallel to X-axis in a uniform magnetic field, pointing in the positive X-direction. The end A of the rod gets

19. Which one among the following has the highest first ionization energy?

20. The strength of an aqueous solution of I₂ can be determined by titrating the solution with standard solution of

21. The oxidation number of sulphur in S₈, S₂F₂, H₂S respectively, are

22. Two wires of same metal have the same length but their cross sections are in the ratio 3 : 1. They are joined in series. The resistance of the thicker wire is 10 Ω. The total resistance of the combination is

23. For preparing 0.1 N solution of a compound from its impure sample of which the percentage purity is known, the weight of the substance required will be

24. There exists a non-uniform electric field along x-axis as shown in the figure below. The field increases at a uniform rate along + ve x-axis. A dipole is placed inside the field as shown. Which one of the following is correct for the dipole?

25. In which of the following minimum content of urea is present?

26.

27. A network of four capacitors of capacity equal to C₁ = C, C₂ = 2C, C₃ = 3C and C₄ = 4C are conducted to a battery as shown in the figure. The ratio of the charges on C₂ and C₄ is

28. A square coil of side a carries a current I. The magnetic field at the center of the coil is

29. The pH of blood does not appreciably change by a small addition of acid or a base because blood

30. The Lassaigne’s extract is boiled with dil. HNO₃ before testing for halogens because

31. An inductance L having a resistance R is connected to an alternating source of angular frequency ω. The Quality factor Q of inductance is

32. 12 g of urea is dissolved in 1 liter of water and 68.4 g of sucrose is dissolved in 1 liter of water. The lowering of vapour pressure of first case is

33. Chemical weathering is at its maximum in

34. Duct of Bellini is concerned with

35. BCl₃ does not exist as dimer but BH₃ exists as dimer (B₂H₆) because

36. Which of the following cannot be explained by Lamarckism?

37. Fenestra ovalis is the opening of

38. Curie temperature is the temperature above which

39. Who is the author of Das Kapital?

40. Sesamoid bone is derived from

41. Natural genetic engineers of plants is

42. The cell constant of a given cell is 0.47 cm⁻¹. the resistance of a solution placed in this cell is measured to be 31.6 ohm. The conductivity of the solution (in S cm⁻¹ where S has usual meaning) is

43. The existence of a substance in more than one solid modifications is known as

44. Which of the following countries does not belong to the group of G-8 nations?

45. Which National Highway connects Delhi and Mumbai?

46. Which one of the following cannot be prepared by Wurtz reaction?

47. What is the intermediate tier of the Panchayali Raj System called?

48. Ghataprabha is a tributary of which one of the following rivers?

49. Four wires, each of length 2.0 m, are bent into four loops P, Q, R and S and then suspended in a uniform magnetic field. If the same current is passed in each, then the torque will be maximum on the loop

50. Kiel Canal connects