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#1. The mass of a man standing on a lift is 60 kg. What is the weight when he is standing on lift which is moving upward with acceleration 4.9 m/s^2 ?
#2. Which of the following radiations has the least wavelength ?
#3. To get three images of a single object, one should have two plane mirrors at an angle of
#4. The time taken by a alternating current of 50 Hz in reaching from zero to maximum value will
#5. Torque acting on an electric dipole in a uniform electric field is maximum if the angle between p and E is
#6. The nature of frictional force is
#7. If K.E. of a free electron is doubled, its de-Broglie wavelength changes by the factor
#8. Zener diode is used for
#9. Radius of one arm of hydraulic lift is four times of radius of other arm. What force should be applied on narrow arm to lift 100 kg ?
#10. If a convex lens of focal length 80cm and a concave lens of focal length 50 cm are combined together, what will be their resulting power ?
#11. Cyclotron frequency of an electron grating in a magnetic field of 1T is approximately
#12. A current carrying small loop behaves like a small magnet. If ‘A’ be its area and ‘M’ its magnetic moment, the current in the loop will be
#13. If contact between football and leg lasts for 1/50 second, then the force acted on the ball
#14. An antenna is of height 500 m, what will be its range ? (Radius of earth = 6400 km)
#15. Rainbow is formed due to combination of
#16. If the ‘forward voltage’ in a diode is increased, then the width of depletion region
#17. Work done by frictional force is
#18. Resistance of ideal voltmeter is
#19. With the rise of temperature , the resistivity of a semi-conductor
#20. Choose the correct option :
#21. The work done in moving an alpha particle between two points having potential difference 25 V is
#22. A soap bubble is charged to a potential of 16 V. Its radius is then doubled. The potential bubble now will be
#23. Sound waves of wavelength λ travelling in a medium with a speed of ‘v’ m/s enter into another medium where its speed is ‘2v’ m/s. Wavelength of sound waves in second medium is
#24. Ionisation energy of hydrogen atom is
#25. According to Bohr’s principle, the relation between principal quantum number (n) and radius (r) of orbit is
#26. A body floats in water with 40% of its volume outside water. When same body floats in oil, 60 % its volume contains outside oil. The relative density of oil is
#27. The angle of incidence at which reflected light is totally polarised for reflection from air to glass (refractive index,μ) is
#28. Energy required to establish a current of 4A in a coil of self-inductance L=200 mH is
#29. A transformer is used to light a 100 W and 11 V lamp from a 220 V mains. If the main current is 0.5 A, then efficiency of the transformer is approximately
#30. The momentum of a photon of energy 1 MeV(in kg m/s) will be
#31. Which transition element helps O2 intake in humans ?
#32. In the following table the percentage abundance of different isotopes of Mg is given. What is the average atomic mass (mass number) of Mg ?
#33. Which bond is expected to show most polar character ?
#34. What is the angle expected for H-O-H in the H2O molecule ?
#35. What would be the shape of CIF3 molecule, which has three single bonds and two lone pairs ?
#36. Which is true according to the given reaction ? N2+O2—> NO ; ∆ H = 43.2 kcal/ mol
#37. Determine the contribution of entropy to the spontaneity of the given reaction: 2Al2O3 (s) —-> 4Al (s) + 3O2(g) ; △G = +138 kcal . The reaction is ………………. and the entropy of the system …………………
#38. Which statement best describes the way a catalyst works?
#39. The concentration of glucose in blood is approximately 90 mg/100 ml. What is the molarity of glucose ? (Molar mass of glucose = 180 g)
#40. What would be the new pressure, if a 400 ml gas sample at 380 mm Hg is expanded to 800 ml with no change in temperature ?
#41. Which is a correct statement of Gay – Lussac’s law describing the behaviour of a fixed amount of gas
#42. Which of the following is a diprotic (dibaisc) acid ?
#43. A Bronsted – Lowry acid is a substance which
#44. Water and HSO4^- can either accept protons or donate protons. Such substances are said to be:
#45. Hydrogen gas is not used :
#46. The sting of an ant contains formic acid. When an ant bites, it injects the acidic liquid into the skin. The effect of the sting can be neutralised by rubbing …………………
#47. A silver spoon is dipped in a cup of ice cream. Its other end
#48. Potash alum can be prepared by mixing ………….. in equimolar proportions
#49. On passing electrical current through an electrolytic solution , cations move
#50. Cloud is an example of
#51. Which one is not a thermosetting polymer ?
#52. Monomer unit of natural rubber is
#53. In a multistep chemical reaction, rate of overall reaction depends upon the rate of
#54. The metal used in standard hydrogen electrode is
#55. The lowest ionization enthalpies are found in
#56. The monosaccharide units are linked to each other in a polysaccharide by
#57. Which of the following has the highest catenation capability ?
#58. Detergents are prefferred over soaps because :
#59. One pico meter is equal to :
#60. The atoms 6C13 and 7N14 can be described as
