Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is mean by peak tailing in case of GC?

5 10187

why we are taking 85 ml of concentrated HCl to prepare 1N Solution

SG Phyto Pharma,

4 98801

What is diffrence between residue on ignition and sulphated ash?

Zydus Cadila, Cadila, Piramal Healthcare, Panas Pharmaceuticals, Remidex, Aurobindo, Dr Reddys, Mylan,

36 136561

how can standardized of HCl of 0.1 N

7 35074

What is the difference b/w OVI Solvents and Residual Solvents in case of Gas Chromatogaphy and What is its Detection Limit?

Jubilant Organosys, Suven Life Sciences,

7 27587

what is the diffrence between absorbance and absorption in the beer,s lamber formula ?

2 7462

one gram of which below elements has the most atoms in its? a) H b) D C)T D) He

4 3472

0.1 atom gram of the unknown element( X)reacts with 2.4 gram of O2 to produce the oxid product . can you tell us, what is the oxid formula ? a) XO b)X2O3 c)XO2 D) X2O4


1 1725

Why we use Uracil for HPLC calibration in Detector wave ength accuracy test?

5 17946

k.f principle in finding out moisture content

1 10356

What is difference btw UV detector & RID detector

4 13139

What's the importance of these procedures?

1 2813

How precise should be the linearity in HPLC method validation?


3 6927

what should be the precision during technology transfer?


3 5533

why we use vanillin in melting range calibration

3 8774

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Un-Answered Questions { Analytical Chemistry }

What is method validation in quality control


How we can determine water content in piperazine


How can the GC or HPLC method is selected to determine the impurity profile in drug product?


why octanol used to determine the partition coefficient ?


what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR


some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?


how to select short coloum and long coloumn for new molecule


effect of Ph during analytical run ?


Which std. used for standrdisation of ZnSO4?


what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?


How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample


wat is the role of michelson interferometer in FTIR and He-Ne lase.detailed answer required in simple language


What is importance of pH in the Heavy metal test and How it effect on the test results?


In dissolution test s1 stage we are getting one bowl 40 % out of 6 bowls what is the root cause you find and how proceed next step? ( Q is 80%)


why we use a particular hplc column for a particular compound give reasons?please