Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how can u seperate polar compounds in hplc ?

Meditab, Piramal Healthcare,

1 4752

what is the difference between hplc and uplc?

Mylan, Fresenius Kabi,

5 5280

what is the basis of separation in chromatography?

Anthem,

1 3813




what is the diference between spectroscopy and chromatography

Cipla, PharmChem, Reliance,

2 7122

Why we have to take 42gm of sodium hydroxide instead of 40gm for preparation of 1M Sodium hydroxide as per Pharmacopia? Whether it means the formula for calculating molarity was wrong? 

Ranbaxy, Claris Otsuka,

3 5096

what is internal standard define

Apex, Hikma Pharmaceuticals, IPCA, Coromandel International Limited,

2 1394

pharma industries oriented

Apex, Micro Labs, Zydus Cadila,

825

gc Calibration % RSD failed what is the possible reasons?

Divis Laboratories,

3 5563




What is the procedure for the calibration of ph meter?

IBS,

1 1932

What are the parameters for the method development of Gas Chromatography and GC-HS? 

2 2859

What is the difference between purge septum flow and column flow in gas chromatography?

760

how much mass should be there in volumetric flask while in preparation of sample for assay? 

Reddy Labs,

1137

U have 4 strengths have different coating meterial which one u chose to do forced degradation stady in validation

Reddy Labs,

1 1882

Tell me about analytical method validation in QC

Petronas,

1789

what is procedure of actual procedure for registration of drug?

608


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Un-Answered Questions { Analytical Chemistry }

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

1219


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

1295


How to define samples weight in moisture content

110


Why potassium dichromate was using in Uv calibration?

346


why does used dry caffien in HPLC calibration?

564






WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

1045


in gas chromatography what is the difference between gas flow rate and average linear velocity ?

991


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

2550


What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

5727


why are measure gas flow " ml " in Gas chromatography

333


What are modes of quantification in related substances

869


what type of question will ask in the interview of lab chemist.

2077


mahagenco syllabus for the post of chemist

4880


How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

1197


In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

292