A butane isomerisation process produces 70 k.mole/hr of pure iso-butan – McqOptions

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1.	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
Answer» D. 6 kmole/hr

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