Question

Where is double distillation method used?

(a) To prepare distilled water for laboratory purposes

(b) To produce distilled water for commercial purposes

(c) To produce wine for commercial purposes

(d) To produce coffee for commercial purposes

The question was asked during an interview.

My doubt stems from Distillation Basics in portion Distillation of Food Processing Unit Operations

Answer 1

Correct option is (a) To prepare distilled water for laboratory purposes

To explain I would say: Double distillation consists of flak with heating elements. It is used for carrying out the reactions under stirred conditions besides furnishing for reflux distillation. It is used to prepare distilled water for laboratory research.