A distillation column with N plates is being operated under normal
conditions. At some point of time, the operation is shifted to total reflux
condition (i.e., no product and residue are being withdrawn and feed to the
column is stopped). At the new steady state,
(A) Composition of vapors and that of liquid do not vary throughout the
column
(B) Reboiler load and condenser load are minimum
(C) The top and bottom compositions are unchanged with and without total
reflux
(D) The top and bottom compositions correspond to the maximum
enrichment available
conditions. At some point of time, the operation is shifted to total reflux
condition (i.e., no product and residue are being withdrawn and feed to the
column is stopped). At the new steady state,
(A) Composition of vapors and that of liquid do not vary throughout the
column
(B) Reboiler load and condenser load are minimum
(C) The top and bottom compositions are unchanged with and without total
reflux
(D) The top and bottom compositions correspond to the maximum
enrichment available