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.



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