ALLInterview.com :: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Google
   
 
Categories >> Sciences >> Chemistry >> Analytical Chemistry
 
 


 

 
 Organic Chemistry interview questions  Organic Chemistry Interview Questions (228)
 Inorganic Chemistry interview questions  Inorganic Chemistry Interview Questions (96)
 Analytical Chemistry interview questions  Analytical Chemistry Interview Questions (867)
 Physical Chemistry interview questions  Physical Chemistry Interview Questions (57)
 General Chemistry interview questions  General Chemistry Interview Questions (284)
 Chemistry AllOther interview questions  Chemistry AllOther Interview Questions (71)
Question
wt is rsd in and explain
 Question Submitted By :: Analytical-Chemistry
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
RSD means Relative standard deviation. If we inject same
sample 5 injections the deviation b/w these area or RT is
called as RSD

RSD = Standard deviation *100/mean(area or RT)
 
Is This Answer Correct ?    43 Yes 3 No
Janagamshyam
 
Answer
# 2
RSD = Standard Deviation/ Average * 100

Average is '(same sample is analyzed for 5 times with the
same conditions of instrument)the average of results.

RSD used to Know the precision. If the RSD is less than 3%,
That is precision is good.
 
Is This Answer Correct ?    1 Yes 1 No
Srikanth
 
 
 
Answer
# 3
Relative Standard Deviation.
RSD= S.D*100/ Mean.

In short This is to Explain the UNCERTANITY in your Analytical Result. We don't Know the true Value.

Uncertanity can be Quantified in different ways.

I Know the following
1.Significant figures method
2.Error propagation Method and
3. Statistical Method
 
Is This Answer Correct ?    0 Yes 0 No
Rama Rao Kethineni
 

 
 
 
Other Analytical Chemistry Interview Questions
 
  Question Asked @ Answers
 
If we have 120 minutes run time method for HPLC and you wan to decrease the Run time so what should you do??   6
what is the method of UV cabinet CALIBRTION   2
what is differance between volatile and non volatile compound expalin by exaple   2
What is descriminatory disolution medium ? Cipla 2
Why Na lamp is used in polarimeter? Vimta-Labs 5
Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual solvents incase of GAS CHROMATOGRAPHY? nd wt s its detection limit?   3
why we use kbr as constant in the FTIR ?   2
What is Threshold in hplc? Hetero 1
what is mean by profiling of dissolution   1
What should be the precision for HPLC during technology transfer?   3
What is the difference between uplc and hplc Hetero 2
How to fix the concentration for RS by HPLC Reddy-Labs 6
 
For more Analytical Chemistry Interview Questions Click Here 
 
 
 
 
 


   
Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
   
Copyright 2013  ALLInterview.com.  All Rights Reserved.

ALLInterview.com   ::  KalAajKal.com