Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is Isotope tracer technique?

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

1 4853

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

4 8521

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

2 4623




what is reverse phase chromarography&normal phase chromatography

Aurobindo,

4 9057

what is difference between Performance check and Calibration?

1 10923

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

1 2355

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?

1333

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

Cipla,

15 56101




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 18301

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

7 6192

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

5 6663

why you require QA approval & what is its importance?

2 5369

wt is rsd in and explain

Cadila, Reddy Labs,

4 12073

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

15 24099

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

Apotex, Cipla, Intas, GSK, Zydus Cadila,

6 36539


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Un-Answered Questions { Analytical Chemistry }

How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

2507


why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space

986


How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

2618


In Karl Fischer titration,What is the situation if the material tested is only soluble in water,and not soluble in the common solvents used such as methanol ?? [e.g. Iron III Hydroxide polymaltose]

1559


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

1135






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

1143


4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

1327


In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

1963


Explain the relations between number of carbon atoms in alkanes and retention time ?

704


using gradient pressure in gas chromatography are not ?using gradient pressure why

2159


what type of questions asked on analytical balance and also give answers................all pharma companies?

6381


Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

704


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,

1176


what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

1102


How to check hplc detecter sensitivity?

287