Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

Please do not join if u got offer in oncotherapies ltd (STRIDESARCOLAB)especially Mr.Mahesh Bhatt team because job is not secure his team and doesn't have confidence on him becareful this offer?

Strides Arcolab,

1 2723

In partical size by malven,which parameter is generlly change for development of dry and wet method.

1 1040

As per ICH related substances stability trend limit from initial to shelf life

Micro Labs, Medley Pharmaceuticals,

1831




what is the difference between EP and BP

Novartis, Vimta Labs,

2 13759

which detector is used in IR

Hetero,

3 11016

why hexadecane is used in calibration of FID IN GC THERE IS NO REMAINING SOLVENTS

DRL, Hetero, MSN,

1 5061

WHY POTASSIUM HYDROGEN PTHALATE IS USED FOR PERCHLORIC ACID? What is difference btw UV detector & RID detector? what is dissolution? What is unit of KF? what is the significant of pH in HPlc?

1 6803

what is dissolution What is unit of KF? what is the significant of pH in HPlc? WHY POTASSIUM HYDROGEN PTHALATE IS USED FOR PERCHLORIC ACID? What is difference btw UV detector & RID detector?

1 5645




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?

2132

Hplc detect how much ppm solutions i want range

4 7217

If we change lenght of ph eletrode wire then it will affect on ph ?

2 5063

In kf constant term 16 what it is explain ?

2 5692

Why dissolution apparatus having 8 jars ?

5 9671

What is the unit of Colour?

IPCA,

4 6827

who is the father of HPLC?

IPCA, Cipla,

6 14128


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Un-Answered Questions { Analytical Chemistry }

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

2622


What is the diference between residual solvents and organic volatile matter

738


What is diffrence between extractable volume and deliverable volume? Answer pls

1000


what is third integration

754


why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

408








1095


In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

2056


HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

1042


How would you decide dissolution medium for NCE compound of class I drug

781


What are modes of quantification in related substances

938


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,

1177


How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

1071


Basic principle of ESI?

885


What is aggregate and fragments in SEC?

699


could negative ions be produced by bombardment process in mass spectrometry?

238