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?

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A. 3 kmole/hr
B. 4 kmole/hr
C. 5 kmole/hr
D. 6 kmole/hr

Answer

Answer

C. 5 kmole/hr

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Pick out the wrong statement ?

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A. Lug supports are less expensive than other types of supports
B. A pipe is differentiated from a tube by the fact that a pipe has a greater wall thickness
compared to the tube
C. A reducer is used to change the direction of a pipe in a straight run
D. The method of fixing tubes to a tube sheet by expanding is called ‘tube rolling’

Answer

Answer

C.

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A transaction involves ____________?

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A. at least two parties
C. each party is capable of communication and delivery
D. each party is free to accept or reject the exchange offer
E. all of the above

Answer

Answer

E. all of the above

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