Process Calculations GATE-2001

Q 1: For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperate will

A) increase
B) decrease
C) increase or decrease depending on the fuel type
D) not change

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Q 2: A butane isomerization process produces 70 kmol/h of pure isobutane. 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 kmol/h
B) 4 kmol/h
C) 5 kmol/h
D) 6 kmol/h

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