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Re: GATE Papers by IIT Bombay The previous year Graduate Aptitude Test in Engineering (GATE) question paper of CH: Chemical Engineering subject is as follows: For a pure liquid, the rate of change of vapour pressure with temperature is 0.1 bar/K in the temperature range of 300 to 350 K If the boiling point of the liquid at 2 bar is 320 K, the temperature (in K) at which it will boil at 1 bar (up to one decimal place) is Three identical closed systems of a pure gas are taken from an initial temperature and pressure (T1, P1) to a final state (T2, P2), each by a different path. Which of the following is ALWAYS TRUE for the three systems? (∆ represents the change between the initial and final states; U, S, G, Q and W are internal energy, entropy, Gibbs free energy, heat added and work done, respectively.) (A) ∆U, ∆S, Q are same (B) W, ∆U, ∆G are same (C) ∆S, W, Q are same (D) ∆G, ∆U, ∆S are same For a gas phase cracking reaction A → B + C at 300C, the Gibbs free energy of the reaction at this temperature is ∆G = 2750 J/mol. The pressure is 1 bar and the gas phase can be assumed to be ideal. The universal gas constant R = 8.314 J/mol.K. The fractional molar conversion of A at equilibrium is: (A) 0.44 (B) 0.50 (C) 0.64 (D) 0.80 Two different liquids are flowing through different pipes of the same diameter. In the first pipe, the flow is laminar with centerline velocity, max ,1, whereas in the second pipe, the flow is turbulent. For turbulent flow, the average velocity is 0.82 times the centerline velocity, max ,2. For equal volumetric flow rates in both the pipes, the ratio max ,1/max ,2 (up to two decimal places) is A cylindrical packed bed of height 1 m is filled with equal sized spherical particles. The particles are nonporous and have a density of 1500 kg/m3. The void fraction of the bed is 0.45. The bed is fluidized using air (density 1 kg/m3). If the acceleration due to gravity is 9.8 m/s2, the pressure drop (in Pa) across the bed at incipient fluidization (up to one decimal place) is GATE Chemical Engineering Question Paper |
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