Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

give clarity of linearity and range in method validation

911

how do we get usp reference standard potency?

MSN Pharma, Ind Swift Laboratories,

1 1736

what is the origin to prepare standard operating procedure

931




why we are using sodium,potassium phosphates for mobile phase preparation?

1 7616

why water factor is near about 5.0 in kf titration?

Claris Lifesciences, Indchemie Health Specialities,

3 9519

Why 1800 ml of dissolution media used In Carbamazepine ER USP Tablets But other drug only 900 ml Media Used ?

Torrent Pharma,

1 2628

what is use in calibration of conductivitimeter?

SRF, Claris Lifesciences,

1 2828

how to calculate corelation coefficient in G.C Calibration? what is the calculation part?

Ortin Labs, Cipla,

950




reasons for negative peaks in chromatography

DRL,

5 9772

why octanol used to determine the partition coefficient ?

938

if partition coefficient value was positive means, what it indicates ?

1 1852

why has inject 5 injection in assay

Lupin,

2 9571

why has inject 6 injection in Releted compounds

2 6746

why we should take dst factor for below 1%moisture samples

Ind Swift Laboratories,

1357

what is end capping in hplc coulmn

Lupin, Zydus Cadila,

2 8357


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Un-Answered Questions { Analytical Chemistry }

what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

1006


Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

1199


In Dissolution Test why limit is define Q+5% what is the role of +5%.

1383


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

1010


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

1034






How to choose concentration of LOQ solutions for RS analysis? Example.

716


what is the disso medium for tropsiun chloride

873


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?

2017


WHY given much noise PDA dector then VWD Dector

629


What is Band broading effect explain

521


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

8343


Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

1261


what is the origin to prepare standard operating procedure

931


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...

520


mahagenco syllabus for the post of chemist

4870