Which one of the following techniques is not used to spot components of a mixture separated on thin layer…

Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate?
  1. I2 (Solid)
  2. U.V. Light
  3. Visualisation agent as a component of mobile phase
  4. Spraying of an appropriate reagent

Solution

Thin Layer Chromatography is a technique used to isolate non-volatile mixtures. The experiment is conducted on a sheet of aluminium foil, plastic, or glass which is coated with a thin layer of adsorbent material. The material usually used is aluminium oxide, cellulose, or silica gel.

The sample spots can be observed under a UV light chamber, I2 solid or by spraying of an appropriate reagent which can react with the sample spot.

Asked in: JEE Main 2022 (28 Jun Shift 1)

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