Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is differences between the Instrument and Equipment

Aurobindo,

2 1178

Why dissolution test apparatus calibration with salycilic acid tablets was stopped by FDA&USP from the year of 2009?

Aurobindo,

1 997

What is UV cut off?

Sanmar,

1 1289

What is the importance of sulphated ash test?

1 988

What is impurities in pharma analysis?

1 749

What are the different zones in stability according to ICH?

Apotex,

1 957

According to ICH,India is coming under which climatic zones?

Cipla,

1 1018

How does GC did work?

1 630

Which detector is used in uv-vis spectrophotometer?

Glenmark,

1 1039

Why chromic acid wash is not recommended by USP for glassware cleaning?

Lupin,

1 676

What is the difference between ROI & sulphates ash?

1 931

What is difference between NDA & ANDA ?

Alembic,

1 1242

What is Rf value& Rx value in TLC?

Abbott,

1 1020

What are the six USP melting point reference standards?

1 779

What is the size of capillary tube used for analysing melting point?

Apotex,

1 758


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Un-Answered Questions { Analytical Chemistry }

what is peak purity and its formula

512


what type of question will ask in the interview of lab chemist.

2353


How will u perform degradation study in detectors other thann PDA in HPLC Methodology

1477


acceptance criteria for lod & loq by standard deviation of response and slope??

1449


what is the disso medium for tropsiun chloride

1171






What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

1581


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

566


how to calibrate hplc & gc

3393


about method developement in hplc

650


give clarity of linearity and range in method validation

1222


Identify problem faced when mass spectroscopy is used with HPLC system ?

932


What is the calibration of uv process and preparation

964


what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

964


how much mass should be there in volumetric flask while in preparation of sample for assay? 

1506


What should be the level/ Percentage of Arsenic in Arsenic free zinc.

1256