7111. Flooding results in
High tray efficiency
Low tray efficiency
High gas velocity
Good contact between the fluids
✅ The correct answer is option B.
Chemical Engineering
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7112. Large scale drying of sugar is done in a __________ dryer.
Spouted bed
Tray
Rotary
Truck
✅ The correct answer is option C.
7113. For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of H₂/ky.Cz is around
0.6
0.24
1
0.72
✅ The correct answer is option C.
7114. When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.
Continuous
Steam
Azerotropic
None of these
✅ The correct answer is option B.
7115. During drying of a solid, the critical moisture content increases with
Decreased drying rate
Increased thickness of the solid
Increased drying rate
Both B and C
✅ The correct answer is option D.
7116. In case of absorption, both the operating and equilibrium lines will be straight for
Isothermal operation
Dilute solutions
Dilute solutions and isothermal operation
None of these
✅ The correct answer is option C.
7117. The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called
Decoction
Percolation
Elutriation or elution
None of these
✅ The correct answer is option C.
7118. NSc/NPr is called the
Psychrometric ratio
Lewis number
Sherwood number
Stantan number
✅ The correct answer is option B.
7119. Ammonia present in the coke oven gas is removed by washing with
Caustic solution
Dilute ammoniacal liquor
Dilute HCl
Ethanolamine
✅ The correct answer is option B.
7120. Bollman extractor
Is a static bed leaching equipment
Is used for extraction of oil from oilseed
Is a centrifugal extractor
Employs only counter-current extraction
✅ The correct answer is option B.