What is the difference between known and unknown impurities?



What is the difference between known and unknown impurities?..

Answer / nikil kumar

Known impurities in related substance are related to the structure of compound, sometimes it may be starting metrial in case of coupling reaction.
Unknown impurities are generated during process via the side reaction with compounds.

Is This Answer Correct ?    2 Yes 0 No

Post New Answer

More Analytical Chemistry Interview Questions

why we inject sample TWICE in ASSAY by HPLC analysis but in RS once?

4 Answers   Aurobindo, DRL, Neuland,


sop of a uv visible spectrophotometer double beam elico model

0 Answers   Sun Pharma,


what is the difference between isocratic & elution technique?

3 Answers   Laurus,


What is vial equlibriation in Gc?

1 Answers  


what is mean by theoritical plates(not formula) ?

4 Answers   Micro Labs,






how pyridine can be analysed other than GC?

1 Answers  


what v define from IR & NMR spectroscopy ?

2 Answers   Sun Pharma,


How to choose the which salt is suitable for mobilephase

0 Answers   Cipla, Ranbaxy,


give tha clarity about peak purity concept

3 Answers   Aurobindo, Reliance Life Sciences,


why we use kbr as constant in the FTIR ?

4 Answers  


What is the principle of HPLC?

3 Answers   Cipla, Lupin,


Describe 5 components of SFC ?

1 Answers   College School Exams Tests,


Categories
  • Organic Chemistry Interview Questions Organic Chemistry (342)
  • Inorganic Chemistry Interview Questions Inorganic Chemistry (123)
  • Analytical Chemistry Interview Questions Analytical Chemistry (1387)
  • Physical Chemistry Interview Questions Physical Chemistry (62)
  • General Chemistry Interview Questions General Chemistry (478)
  • Chemistry AllOther Interview Questions Chemistry AllOther (190)