GATE Chemical Engineering Test-1

Question or Hint Answer or Word

It is observed that a distillation column separates 10,000 kg/hr of a mixture containing in equal mass of benzene and toluene. It is seen that product D is recovered from the condenser containing 95% benzene, and bottom containing 96% toluene. Calculate t 0.58 (wrong answers: 0.44, 0.67, 0.22)
What is the expression for closed thermodynamics system, if DU is the change in system internal energy, Q be the net heat crossing boundary and W be net work done by or on the system? DU = Q – W (wrong answers: DU = Q + W, DU = Q x W, DU = Q / W)
What will be the activity coefficient for sodium Na+ in a solution whose ionic strength is 0.01 at 298 K? 2.19 (wrong answers: 1.90, 0.90, 1.19)
Which among the following satisfies that Radiation is a chief method of energy transfer from: sun to an earth satellite (wrong answers: a gas flame to water in a teakettle, a soldering iron to metals being soldered, water to an ice cube floating in it)
Which quality should be look upon while designing a heat exchanger? conductivity (wrong answers: stability, big size, fashionable)