Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how can u seperate polar compounds in hplc ?

Meditab, Piramal Healthcare,

1 5291

what is the difference between hplc and uplc?

Mylan, Fresenius Kabi,

5 5877

what is the basis of separation in chromatography?


1 4223

what is the diference between spectroscopy and chromatography

Cipla, PharmChem, Reliance,

2 8065

Why we have to take 42gm of sodium hydroxide instead of 40gm for preparation of 1M Sodium hydroxide as per Pharmacopia? Whether it means the formula for calculating molarity was wrong? 

Ranbaxy, Claris Otsuka,

3 6533

what is internal standard define

Apex, Hikma Pharmaceuticals, IPCA, Coromandel International Limited,

2 1999

pharma industries oriented

Apex, Micro Labs, Zydus Cadila,


gc Calibration % RSD failed what is the possible reasons?

Divis Laboratories,

5 7197

What is the procedure for the calibration of ph meter?


1 2378

What are the parameters for the method development of Gas Chromatography and GC-HS? 

2 3332

What is the difference between purge septum flow and column flow in gas chromatography?


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

Reddy Labs,


U have 4 strengths have different coating meterial which one u chose to do forced degradation stady in validation

Reddy Labs,

1 2197

Tell me about analytical method validation in QC



what is procedure of actual procedure for registration of drug?


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Un-Answered Questions { Analytical Chemistry }

Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.


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


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


Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?


In Dissolution Test why limit is define Q+5% what is the role of +5%.


What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio


i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me


How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium


which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc


Why we check moisture,ash & AIA in product


why octanol used to determine the partition coefficient ?


What is viod volume and peak purity in HPLC?


we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion


for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol


how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,