Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

Why we use caffeine for HPLC calibration in Detector wave ength accuracy test

Reddy Labs, Aurobindo, Cipla, Arvind, Shasun Chemicals,

59 145521

Why we use holmium oxide,perchloric acid for uv/vis calibration

Cipla, Ratiopharm, Orchid,

4 20297

Why Deuterium lamp is used as UV light Source for UV.

4 13173

What is principle of Polarimeter?


21 64493

What is unit of KF?


7 32968

what is principle of XRD?


3 21870

What is unit of pH?

26 35260

How to calibrate glassware against std calibrated glassware?

Cadila, Hetero,

3 9754

One pH means how much volts and milivolts?

Dr Reddys,

7 22746

Why sodium lamp is used as source of Polarimeter?

NCL, Zydus Cadila, College School Exams Tests, Hetero,

12 44484

why there is a need of optical activity & specific optical activity measurement by polarimeter


6 8980

What is normality


12 16357

what is principal of karl ficher instrument!

Alkem Labs, USV,

12 28462

How many clauses in ISO!

2 9224

Why 10%,20%,30% Sucrose solution is used for the calibration of polarimeter?

Cipla, LGC Promochem,

5 19482

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Un-Answered Questions { Analytical Chemistry }

How to calculate coreletion coefficient


Tell me something about Vitamin A test method by HPLC


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


for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol


about method developement in hplc


how can give the expiry period and restadardisation of volumetric solution


Why irmoisture balance is used for corrugated box moisture testing


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,


Why to use propyl paraben in HPLC gradient calibration


what is turbidimetric titration?Give 2 examples.


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


Tell me about analytical method validation in QC


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


cefoperozone and sulbactam inj. hplc test method


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