A set of scales is not zeroed properly, so all readings are 0.5 g below the actual value.Identify the type of bias in this scenario

Which one is true about random errora.It’s an error which may be above or below the true valub.It’s caused by equipment that has not been correctly zeroedc.It’s caused when the measured object and the scales lie at different distanced.It’s caused by a bias or a trend

Which one of the error caused by a bias in measurementa.Parallax errorb.Random errorc.Zero errord.Systematic error

You performed an experiment to determine the molar mass of an unknown substance, and you have the following data that are only partially processed.Trial Mass / g Amount / mol111.1351.1350.02030.0203221.1281.1280.02020.0202331.1151.1150.01900.0190441.1291.1290.02020.0202Identify the outlier that should be omitted from calculations. Answer with the number of the trial (1, 2, 3 or 4).

A proper scale needs to be chosen to represent the data accurately.*2 pointsTrueFals

The smallest value of a physical quantity which can be measured accurately with an instrument is called :Main scale readingLeast countPitchVernier scale reading