Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is Isotope tracer technique?

LAP, MAHINDRA, MPSC, PSI Data Systems, WNS,

1 6232

In Karl fischer titrator what medium we can choose to analysing aldehyde and ketone samples by using KF reagent

4 11065

Can we do the MC analysis of a sample which is not completely soluble in the medium choosed.

2 6156

what is reverse phase chromarography&normal phase chromatography

Aurobindo,

4 11702

what is difference between Performance check and Calibration?

1 14618

What is the correct way to digest milk powder to get the corrrect value of Fe and Zinc?

1 3500

why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?

2315

What is the reason for using the 900ml of dissolution medium

Cipla,

16 73810

what are the different methods of analysing related substances test,what are LOD AND LOQ .HOW TO REPORT IMPURITIES WHEN LOD AND LOQ LIMITS R SPECIFIED

Dr Reddys,

3 24838

Which type of material analysis in GC using Theramal conditivity detector ?

7 9457

suppose i give three compounds A,B,C how do u calculate assay of those three componds which method do u prefer

5 9727

why you require QA approval & what is its importance?

2 7139

wt is rsd in and explain

Cadila, Reddy Labs,

4 14974

what is the difference of use of LOD test and Karl Fischer titra.?

15 32216

What is the difference between Paddle and Basket Why we are using Basket or paddle in dissolution.

Apotex, Cipla, GSK, Intas, Zydus Cadila,

7 43484


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Un-Answered Questions { Analytical Chemistry }

What is the requirement for brazil in the analytical method vslidation comparr to ich?

247


what is the purge flow & how to calculate

1955


I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

2946


Please give idea about method development for cleaning method and how maco level establish

248


why multimedia dissolution require to do?

288






if rsd failed then what require to do?

296


what is third integration

1471


when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1487


if you get peak in blank then what require to do?

463


How to do regeneration of Metacarb Pb plus column?

2055


What is gelatinization?

1148


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

1955


What is third generation HPLC Columns?

1486


how you establish the LOQ?

281


What is the Formula for coreletion coefficient in plhplc calibration

1208