To match List I (Technique) with List II (Application), we need to understand the relevance of each distillation technique:

1. Distillation is typically used for separating components of mixtures who have a significant difference in boiling points.

Application: Separation of glycerol from spent-lye.

2. Fractional distillation is used for separating mixtures of liquids with closer boiling points by using a fractionating column.

Application: Separation of crude oil fractions.

3. Steam distillation is generally used for compounds that decompose under high temperatures and are insoluble in water.

Application: Aniline - Water mixture.

4. Distillation under reduced pressure (vacuum distillation) is used for compounds with very high boiling points to avoid decomposition.

Application: Chloroform - Aniline.

Therefore, the correct match is:

Option D
A-IV (Distillation - Chloroform - Aniline)
B-III (Fractional distillation - Separation of crude oil fractions)
C-II (Steam distillation - Aniline - Water mixture)
D-I (Distillation under reduced pressure - Separation of glycerol from spent-lye)