Stoichiometry
Pick out the wrong unit conversion of heat transfer rate.

1 kcal/m².hr = 0.3687 BTU/ft².hr = 1.163 Watt/m²
1 BTU/ft².hr = 2.712 kcal/m².hr
1 kcal/hr= 1.163 Watt
1 Watt = 1.163 kcal/hr

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Stoichiometry
Pick out the wrong statement about the recycle stream in a process.

Recycling in a process stream helps in utilising the valuable reactants to the maximum with minimum loss of reactants
Recycling is exemplified by refluxing back a part of the distillate to the distillation column to maintain the quantity of liquid within the column
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
Recycling in a process does not help in getting higher extent of reaction

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