February 2019 | Page 168 of 448 | AnsweringExams.Com

Reboiler is considered as one theoretical plate, because_____________________?

August 22, 2021February 14, 2019 by admin

Reboiler is considered as one theoretical plate, because_____________________?

A. Of the assumption that vapour and liquid leaving the reboiler are in equilibrium
B. Vapour is recycled to the column
C. Reboiler itself contains one plate
D. None of these

With increase in the mass velocity of the gas, the rate of drying during the constant rate period ______________, if the conduction and radiation through the solid are negligible ?

August 22, 2021February 14, 2019 by admin

With increase in the mass velocity of the gas, the rate of drying during the constant rate period ______________, if the conduction and radiation through the solid are negligible ?

A. Increases
B. Decreases
C. Remain same
D. Increases linearly

Large scale drying of wheat is done in a ________________ dryer?

August 22, 2021February 14, 2019 by admin

Large scale drying of wheat is done in a ________________ dryer?

A. Fluidised bed
B. Spouted bed
C. Tray
D. Vacuum rotary

The Shrine of Makhdoom Sarwar Nooh is in__________?

August 22, 2021February 14, 2019 by admin

The Shrine of Makhdoom Sarwar Nooh is in__________?

A. Hyderabad
B. Mirpur Khas
C. Matiari
D. Umarkot

With increase in temperature, the leaching rate increases due to__________________?

August 22, 2021February 14, 2019 by admin

With increase in temperature, the leaching rate increases due to__________________?

A. Decreased liquid viscosity
B. Increased diffusivity
C. Both A. and B.
D. Neither A. nor B.

In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed____________________?

August 22, 2021February 14, 2019 by admin

In distillation where q is defined as the moles of liquid flow in the stripg section per mole of feed introduced, for saturated liquid feed____________________?

A. q > 1
B. q < 1
C. q = 1
D. q = 0

Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysteresis. In such cases, the desorption equilibrium pressure is ______________ that obtained for adsorption?

August 22, 2021February 14, 2019 by admin

Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysteresis. In such cases, the desorption equilibrium pressure is ______________ that obtained for adsorption?

A. Lower than
B. Higher than
C. Same as
D. Either same or higher than

In an absorption column, the flooding velocity for random packing is ___________________ that for stacked/regular packing?

August 22, 2021February 14, 2019 by admin

In an absorption column, the flooding velocity for random packing is ___________________ that for stacked/regular packing?

A. Greater than
B. Smaller than
C. Equal to
D. Either A., or B.; depends on the type of packing

In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the ______________ number ?

August 22, 2021February 14, 2019 by admin

In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the ______________ number ?

A. Lewis
B. Grashoff
C. Sherwood
D. None of these

Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be__________________?

August 22, 2021February 14, 2019 by admin

Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be__________________?

A. Cooled
B. Humidified
C. Both A. & B.
D. Dehumidified