Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

Is it necessary to inject three replicate for accuracy in AMV.

Amoli Organics,

1 3105

Which is the best mobile phase to separate organic acids using C8 column. And how should the samples be prepared for hplc?

Biocon,

1 4095

What is the acceptance criteria for moisture balance when calibrated with sodium sulfate

1542

why 0.1M OR 1M Perchloric acid standardisation done after 24 hours?

Cipla,

1 5748

What about karl fischer reaction mechanism ?

Aurobindo, Mylan,

2 6178

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

1428

Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

IDA,

1370

How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

2521

What attracted you to analytical chemistry?

1333

what is the difference b/w water content & moisture content

Dr Reddys,

3 5313

which procedure we follow if 6th month of accelerated sample fail?

Dr Reddys,

1 3841

What is third generation HPLC Columns?

Emcure,

1500

what is third integration

Orchid,

1486

Why sodium hydroxide used for maintain pH of phosphate buffer

Medicamen Biotech,

1820

What is the deference between Residual solvents and OVI

RA Chem Pharma,

1 3277


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Un-Answered Questions { Analytical Chemistry }

What is the diference between residual solvents and organic volatile matter

1477


Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc

976


What is the acceptance criteria for moisture balance when calibrated with sodium sulfate

1542


Tell me something about Vitamin A test method by HPLC

2198


Which parameter require to do for analytical method equivalency?

312






what are risk assement in the analytical qbd?

277


What is diffrence between extractable volume and deliverable volume? Answer pls

3916


Please give idea about method development for cleaning method and how maco level establish

264


What is a difference between potency and purity?

634


what is mean by nitrosamine impurities?

533


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

2012


From where require to take the RLD sample?

270


when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1509


what you do when compound having dwel wavelength?

271


How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

1946