Q21 · CSIR NET Chemistry, December 2017
Paper: CSIR NET December 2017 · Subject: Physical Chemistry · Chapter: Data Analysis · Topic: Error Propagation · Marks: 2 · Difficulty: Medium
Repeated measurement of $Pb$ in a lake water sample gave 3.2, 5.2 and 7.2 $ppb$ of $Pb$. Standard deviation in the measurement of $Pb$ is
(a)$2\ ppb$
(b)$4\ ppb$
(c)$0\ ppb$
(d)$\sqrt{2}\ ppb$
Answer
Answer (as printed): A
Explanation
No explanation was printed for this question.
Study loop for Data Analysis