Question 91. Velocity of an object fired directly in upward direction is given by V = 80 − 32 t, where t (time) is in seconds. When will the velocity be between 32 m/sec and 64 m/sec?

Question 92. All professors are researchers Some scientists are professors Which of the given conclusions is logically valid and is inferred from the above arguments:

Question 93. If |-2x + 9| = 3 then the possible value of |-x| - x2 would be:

Question 94. In a factory, two machines M1 and M2 manufacture 60% and 40% of the autocomponents respectively. Out of the total production, 2% of M1 and 3% of M2 are found to be defective. If a randomly drawn autocomponent from the combined lot is found defective, what is the probability that it was manufactured by M2?

Question 95. Taking the acceleration due to gravity to be 10 m/s2, the separation factor of a cyclone 0.5 m in diameter and having a tangential velocity of 20 m/s near the wall is _________

Question 96. An incompressible Newtonian fluid, filled in an annular gap between two concentric cylinders of radii R1 and R2 as shown in the figure, is flowing under steady state conditions. The outer cylinder is rotating with an angular velocity of Ω while the inner cylinder is stationary. Given that (R2 - R1)

Question 97. In the Tyler standard screen scale series, when the mesh number increases from 3 mesh to 10 mesh, then

Question 98. For a Newtonian fluid flowing in a circular pipe under steady state conditions in fully developed laminar flow, the Fanning friction factor is

Question 99. The exit age distribution for a reactor is given by E(t) = δ(t - 4), where t is in seconds. A first order liquid phase reaction (k = 0.25 s-1) is carried out in this reactor under steady state and isothermal conditions. The mean conversion of the reactant at the exit of the reactor, up to 2 digits after the
decimal point, is __________

Question 100. An isothermal liquid phase zero order reaction A --> B (k = 0.5 mol/m3 -s) is carried out in a batch reactor. The initial concentration of A is 2 mol/m3. At 3 seconds from the start of the reaction, the concentration of A in mol/m3 is __________