Question

During hearing of a court case, the judge suspected that
some changes in the documents had been carried out. He
asked the forensic department to check the ink used at two
different places. According to you which technique can give
the best results?
(a) Column chromatography
(b) Solvent extraction
(c) Distillation
(d) Thin layer chromatography

Answer 1

Thin layer chromatography is the technique used to check the ink, which used in two different places.

Explanation:

• TLC is a separation technique used in the various colorful components of ink by dipping the paper in a solvent such that the ink does not get wet.
• The paper slowly absorbs the solvent, as the solvent moves upwards it separates the components of ink depending on the affinity of component towards the phase of stationary and mobile phase.

Chromatography  

• The principle of distinct compounds has different adsorption and solubility for both phases separated between.  

Thin Layer Chromatography  

• It is a solid-liquid technique in which the both phases are a solid is a phase of stationary and a liquid is a phase of moving.
• It is used in separation and identification of colors, food, cosmetic and pharmaceutical industries.

To learn more;

1. https://brainly.in/question/8527212
2. https://brainly.in/question/11916420