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 2574

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

1 871

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

Micro Labs, Medley Pharmaceuticals,

1654




what is the difference between EP and BP

Novartis, Vimta Labs,

2 12690

which detector is used in IR

Hetero,

3 10554

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

DRL, Hetero, MSN,

1 4609

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 6236

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 5376




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?

1984

Hplc detect how much ppm solutions i want range

4 6944

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

2 4808

In kf constant term 16 what it is explain ?

2 5390

Why dissolution apparatus having 8 jars ?

5 9055

What is the unit of Colour?

IPCA,

4 6511

who is the father of HPLC?

IPCA, Cipla,

6 13401


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Un-Answered Questions { Analytical Chemistry }

What is aggregate and fragments in SEC?

582


WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

812


what is procedure of actual procedure for registration of drug?

571


What is method validation in quality control

2330


Identify problem faced when mass spectroscopy is used with HPLC system ?

636






why octanol used to determine the partition coefficient ?

920


What is the meaning of Base deactivated vials

959


If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

914


in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

864


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,

1089


Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

1376


what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

3037


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...

505


Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

1404


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

1449