Some Basic Concepts Of Chemistry Question 20
Question: If the true value for an experimental result is 6.23 and the results reported by three students X, Y and Z are:
X: 6.18 and 6.28 Y: 6.20 and 6.023 Z: 6.22 and 6.24 Which of the following option is correct?
Options:
A) X precise, Y accurate, Z precise and accurate.
B) X precise and accurate, Y not precise, Z precise
C) Both X & Z precise & accurate, Y not precise.
D) Both X & Y neither precise nor accurate, Z both precise and accurate.
Show Answer
Answer:
Correct Answer: D
Solution:
[d] Both Y and X are neither precise nor accurate as the two values in each of them are not close. With respect to X & Y, the values of Z are close & agree with the true value. Hence, both precise & accurate.
