A. Facilitates better control of the process
B. Improves the conversion
C. Increases the yield of products
D. None of these
Related Mcqs:
- A butane isomerisation process produces 70 k.mole/hr of pure iso-butane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be_________________?
A. 3 kmole/hr
B. 4 kmole/hr
C. 5 kmole/hr
D. 6 kmole/hr - 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 - Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the_________________?
A. Recycling
B. Purging
C. Bypassing
D. Recirculation - Pick out the wrong statement about the recycle stream in a process ?
A. Recycling in a process stream helps in utilising the valuable reactants to the maximum with
minimum loss of reactants
B. The ratio of the quantity of a reactant present in the reactor feed of a recycling operation to the
quantity of the same reactant entering the process as fresh feed is called combined feed ratio
C. Recycling in a process does not help in getting higher extent of reaction
D. Recycling is exemplified by refluxing back a part of the distillate to the distillation column to
maintain the quantity of liquid within the column - 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 - Recycling in a chemical process facilitates___________________?
A. Increased yield
B. Enrichment of product
C. Heat conservation
D. All A., B. & C. - 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 - A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the ____________________?
A. Atomic weight of the metal is 4
B. Equivalent weight of the metal is 4
C. Atomic weight of the metal is 2
D. Equivalent weight of the metal is 8 - Othmer chart is useful in estimating the heat of_______________?
A. Mixing
B. Wetting
C. Adsorption
D. None of these - Kopp’s rule is useful for the determination of_____________________?
A. Molal heat capacities of gases
B. Heat capacities of solids
C. Activation energy
D. Heat capacities of gases
