milliliter (mL)
A beaker is a container which can also be used as a measuring device for volume. It is not a unit of measurement.
For this you would have to look at the beaker. Most modern beakers measure in litres and millilitres.
That depends what aspect of the beaker you want to measure.
measurement of liquids
A beaker without measurement markings is simply referred to as a beaker. It may be used for general mixing, heating, or storing liquids, but would typically not be used for precise volume measurements due to the lack of graduated markings.
unit of measurement
No, millimeters is a unit of measure for distance. Milliliters is the usual measurement used although other fluid units could be used.
No, a pencil is not a unit of measurement.
The unit of measurement of force is 'Newton'
The smaller the unit the more accurate the measurement will be.
no
Not usually. A beaker is used for measurement.