A. Increased yield
B. Enrichment of product
C. Heat conservation
D. All A., B. & C.
Related Mcqs:
- Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is________________?
A. 0
B. 1
C. ∞
D. None of these - At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?
A. μ° + RT ln f
B. μ°+ R ln f
C. μ° + T ln f
D. μ° + R/T ln f - Refluxing of part of the distillate in a fractionating column is a ‘recycling operation’, aimed primarily at_______________?
A. Heat conservation
B. Yield enhancement
C. Product enrichment
D. None of these - Chemical engineering thermodynamics is concerned with the ____________ in/of chemical processes?
A. Reaction mechanism
B. Calculation of rates
C. Energy transformation from one form to another
D. None of these - A chemical process is said to occur under unsteady state, if the_________________?
A. Inventory changes do not take place
B. Ratio of streams entering/leaving are independent of time
C. Flow rates & composition both are time dependent
D. None of these - In a chemical process, the recycle stream is purged for______________________?
A. Increasing the product yield
B. Enriching the product
C. Limiting the inerts
D. Heat conservation - A bypass stream in a chemical process is useful, because it___________________?
A. Facilitates better control of the process
B. Improves the conversion
C. Increases the yield of products
D. None of these - Which of the following ratios defines the recycle ratio in a chemical process ?
A. Gross feed stream/recycle feed stream
B. Recycle stream/fresh feed stream
C. Recycle stream/gross feed stream
D. None of these - The vapor pressure of liquids of similar chemical nature at any particular temperature _______________ with increase in the molecular weight?
A. Increases
B. Decreases
C. Remains unchanged
D. Either A. or B.; depends on the liquid - The chemical nature of an element is independent of_______________________?
A. Its atomic number
B. The number of protons or electrons present in it
C. The number of neutrons present in it
D. None of these
