Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

how can you determine a compound acidic or basic?

Celon Labs, Cipla,

2 10632

For LOD and LOQ determination which method is accurate? (slopemethod or s/n ratio method)

Reddy Labs,

4 11418

how to develop the shorter run time for pharmacopeial methods having 100 min run time?

Reddy Labs,

3 10940

How you start the method development of unknown compound.

1 5820

How to determine water content of bis tetrazole amine mono ammonium salt

3431

Is there any difference in principal of reverse phase and normal phase chromatography? and why? Please update. Thank and regard

MSN Pharma,

3 11210

How to use RF and rrf in Rs calculation( either multiply or divide)?

Micro Labs,

4 13645

WHY KBr is used in IR Spectroscopy

GVK,

3 13685

How can you prepare 0.05M Ammonium acetate volumetric solution?

2 24868

Why using 0.5% acetone in methanol mobile phase for HPLC Gradient performance check.

DRL,

2 13485

IF WE INCREASE FLOW RATE RT DECRESE.WHY

2 10519

in hplc calibration injector linearity pass,it means inj and det is good. why to perform detector linearity is it required, if it is required,what is difference between injector and detector linearity in hplc calibration

Dr Reddys, Hetero,

4 15698

how can you decide API molucule acedic or basic compound by test?

Posh Chemicals,

2 10050

acceptance criteria for lod & loq by standard deviation of response and slope??

2535

various methos to calculate precision in validation methods in HPLC?

2 7418

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Un-Answered Questions { Analytical Chemistry }

what is the principle involved in turbidometry and nephelometry ?

4113

In which situation we require to analytical method validation of excipient?

736

In IR spectra, generally a molecule vibrates without apply emr or ir light?

1911

What is the use of tlc and hplc? And when and where use?

1104

How to set analytical specification for combination products?

774

what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR

9184

in which situation require to take incident in validation?

1658

if identification threshold crosses the limits then what next step?

802

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

1725

how will you do the prep for unstable componds?

1976

what is mean by ambient temperature?

866

why require to do water content for drug product?

784

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

2232

which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

2121

what is classification of elemental impurities? what is risk assement in elemental impurities?

709

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