Question

why do we need the tight packaging of sample in capillary tube for the determination of melting point.​

Answer 1

Answer:

At the meltingpoint the solid and liquid phase exist in equilibrium. Samples be tightly packed in capillary tubes because it makes theheat transfer into the sample more efficient and reproducible, andalso enhances the overall reflectivity of the sample for easierautomated detection of the melt.