Related Mcqs:

1. Powdery materials can be guarded against caking tendency on storage by___________________?

   A. Providing irregular grain size
   B. Providing minimum percentage of voids
   C. Having maximum possible points of contact
   D. None of these

2. The caking of crystals can be prevented by _____________________?

   A. Maintaining high critical humidity
   B. Maintaining low critical humidity
   C. Coating the product with inert material
   D. Both A. and C.

3. Design calculation for multiple component distillation is done by_________________?

   A. Ponchon-Savarit method
   B. McCabe-Thiele method
   C. Enthalpy concentration method
   D. Tray to tray calculations

4. Deaeration (removal of O2) of water is done by_________________?

   A. Rectification
   B. Absorption
   C. Ion-exchange
   D. Adsorption

5. High pressure at the bottom of a distillation tower handling heat sensitive materials results in____________________?

   A. Thermal decomposition of bottoms
   B. Increased relative volatility
   C. Erosion of the tower
   D. Very efficient operation

6. High pressure at the bottom of a distillation tower handling heat sensitive materials results in _____________________?

   A. Thermal decomposition of bottoms
   B. Increased relative volatility
   C. Erosion of the tower
   D. Very efficient operation

7. Free flowing granular materials can be best dried in a __________________ drier?

   A. Rotary
   B. Cylinder
   C. Drum
   D. Freeze

8. Rotary dryers cannot handle _______________ materials ?

   A. Free flowing
   B. Dry
   C. Sticky
   D. Granular

9. Heat sensitive materials with very high latent heat of vaporisation may be economically separated using__________________?

   A. Liquid extraction
   B. Distillation
   C. Evaporation
   D. Absorption

10. _______________ equation applies to diffusivities in liquids?

    A. Gilliland
    B. Hirschfelder
    C. Wilke and Chang
    D. None of these