Question

external indicator shows a colour change when excess of reagent is added from burette it is the example of which of the following error. a) insttrumental error b) operational efficiency c) method d) personal error​

Answer 1

Answer:

instrumental error shows a color change

Answer 2

The correct answer is option (a) Instrumental error.

Explanation:

• External indicator shows a colour change when excess of reagent is added from burette it is the example of instrumental error.
• Instrumental error is a type of error that occurs when an instrument's calibration is inaccurate.
• It refers to the error of a measuring instrument, or the difference between the actual value and the value indicated by the instrument.
• There can be errors of various types, and the overall error is the sum of the individual errors.
• For example, an erroneous zeroing of an instrument can cause this type of error.