Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is the diference between residual solvents and organic volatile matter

RA Chem Pharma,

712

WHY given much noise PDA dector then VWD Dector

697

How to decide the standard concentration for related substances hplc method

1 1139




Why we have to use KBr pellet technology ?

1 1007

Why dissolution test performed on six jar?

Mylan,

1 1657

How to determine retention time in Chromatography

Mylan,

2 2692

effect of Ph during analytical run ?

Lambda Therapeutic Research,

1 844

USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

Srini Pharmaceuticals,

587




is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

Aarti Drugs,

600

Which is the highly polar and highly non polar column in HPLC?

831

What is the difference between qualitative and quantitative analysis (hplc)

1 1338

what is the difference between potentiometric titration and karl fischer titration?

1184

How NMR spectra can be calibrated in presence or absence of TMS?

1 925

What is Band broading effect explain

Dr Reddys,

599

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

Cipla,

495


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Un-Answered Questions { Analytical Chemistry }

mode of absorption in alimentary canal?

1188


A ha tc is actual defination of retention time?

261


what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

705


how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

1119


We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

298






How to determine water content of bis tetrazole amine mono ammonium salt

1978


please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

346


sop of a uv visible spectrophotometer double beam elico model

4200


In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

999


What is the difference between spectro meter and spectro photo meter?

8545


How to choose the which salt is suitable for mobilephase

1715


What is method validation in quality control

2431


why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

6933


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

1437


why 6 tablets use for dissolution

1908