Among the following compounds, the one which shows highest dipole moment is

Thin layer chromatography of a mixture shows the following observation:

The correct order of elution in the silica gel column chromatography is

The decreasing order of hydride affinity for following carbocations is:

Choose the correct answer from the options given below:

Using column chromatography, mixture of two compounds 'A' and 'B' was separated. 'A' eluted first, this indicates 'B' has