1.At total reflux no. of stages is :

Minimum

Maximum

Infinite

None of these

2.In a distillation column of dia 1 ft which of the following is more preferred : :

Tray

Packings

None

Both

3.If feed is introduced in the reboiler there will be no :

Stripping section

Rectifying section

Lower operating line

Both 1 & 3

 

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