Which is not a development technique of paper Chromatography ?a.Ascendingb.Circularc.Horizontald.Two dimensional

Break Down the Problem

1. Identify the options provided in the question that relate to paper chromatography.
2. Determine which technique is not commonly used in paper chromatography.

Relevant Concepts

• Paper chromatography techniques typically include ascending, descending, and two-dimensional methods. Circular chromatography is not a standard technique in this context.

Analysis and Detail

1. Ascending Chromatography: In this method, the solvent moves up the paper due to capillary action.
2. Descending Chromatography: Here, the solvent moves down the paper, which is inverted compared to ascending chromatography.
3. Two-Dimensional Chromatography: In this method, the sample is developed in two different directions, allowing for better separation of components.
4. Circular Chromatography: This is not a recognized standard method of paper chromatography.

Verify and Summarize

After analyzing the techniques, it is clear that circular chromatography is not part of the standard methods used in paper chromatography.

Final Answer

Answer: b. Circular