Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-conceptual-Medium-Class 11
In a fractional distillation process, if the vapours at the top of the column become pure in a low boiling component, what is the primary reason for this purification?
A
Heat exchange between ascending vapours and descending liquid.
B
Rapid cooling of vapours at the column's base.
C
Condensation of all components at the same rate.
D
Use of a single large surface for heat exchange.
Correct Answer
Option A
Detailed Explanation
The fractional distillation column provides many surfaces for heat exchange between ascending vapours and descending condensed liquid, making the vapours richer in the low boiling component as they ascend.
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