Question

What are the four important steps needed to obtain accurate meting points on a Mel-Temp? Select four options:

Answer 1

Answer: The four important stages are stage 1,3,4,6

Explanation: in stage 1, it is very important to grind the sample into a fine powder, to increase the surface tension, and to make it possible of entering inside the capillary tube.

In stage 3. It is important to know the amount of sample that should be filled in the capillary. The powdered sample to be filled must be between 2-3mm

In stage 4. The temperature has to be set to rise immediately it is plugged on.

In stage 6. For accurate result, the temperature at which the first melting occurs should be recorded and he temperature at which the last crystal disappear. They are some other cautions to note when using a Mel-Temp to obtain accurate melting point of a substance, as it is not limited to only the four steps above.