Indian Institute of Information Technology 2006 Entrance Exams IIT Entrance Exams JAM BIOTECHNOLOGY TEST - Question Paper

61. The ionization energy of a hydrogen atom is 13.6 eV. The 1st excitation potential of the hydrogen atom is
(A) higher than 13.6 eV (B) lower than 13.6 eV (C) same
(D) twice the ionization energy
62. Under standard condition can KMnO4 produce O2 from water in the presence of a mineral acid? (Given half cell potential 1.51 V for MnO4-/Mn2+ and O2/H2O in acid 1.22 V)
(A) the reaction is not possible
(B) the reaction needs air (C) the reaction is possible (D) the reaction needs photon
63. The hydrolysis of ethyl acetate by acetic acid produced in the reaction also catalyzes the reaction. If the initial concentration of ethyl acetate is ‘a’ and that of acetic acid is ‘b’ &
‘x’ is the amount of ethyl acetate hydrolyzed at time ‘t’. The rate of reaction will be
(A) k(a+x)(b+x) (B) k(a-x)(b+x) (C) k(a-x)(b-x) (D) k(a+x)(b-x)
64. On passing monochromatic light through a 0.04 molar solution in a cell of one cm path length, the intensity of the transmitted light was decreased to 50%. compute the molar extinction coefficient of the solute in the solution (given log two = 0.3010).
(A) 0.75 liter mol-1 cm-1
(B) 75 liter mol-1 cm-1 (C) 750 liter mol-1 cm-1 (D) 7.5 liter mol-1 cm-1
65. Kilowatt-hour is the unit of
(A) Power (B) Energy (C) Current (D) Voltage
66. The dimensional formula of surface tension in terms of the dimensions of mass (M), length (L) and time (T) is
(A) MT-2
(B) MLT-2 (C) MT-1 (D) ML-1T-2
67. Which of the subsequent statements is FALSE? (A) Light rays travel through vacuum.
(B) Gamma rays travel through vacuum.
(C) Sound waves travel through vacuum. (D) Sound waves travel through solids.
68. A body moves from A to B in a straight line with a uniform speed of 60 m/s and returns to B with a uniform speed of 40 m/s. The avg. speed of the body for the complete motion is
(A) 50 m/s (B) 45 m/s (C) zero (D) 48 m/s


69. 2 particles have their masses and the kinetic energies both in the ratio 1:2. Then the ratio of their de Broglie wavelengths will be

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