Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

Plz explain the formula in uv calibration =Absorbance of the sample ( x ) x 10 x 1000/Weight of potassium dichromate taken in mg

1 6259

how v can identify functional groups by wet techniques?

2 2807

What is the difference in OVI and Residual solvents?

Discovery Intermediates,

3 11164

what is the method of UV cabinet CALIBRTION

2 11686

WHAT IS THE USE OF STARTER ?????????

Sharp,

1339

why IR graph or spectra comes down ? Any reason

4 13320

what is partion and column chromatography

Emcure,

1274

What is the difference between the optics of UV and PDA Detectors ?

Emmennar, Neuland,

3 11812

How to establish pKa for a new API molecule ?

Neuland, Sun Pharma,

2 8928

why we are adjusting the ph in buffer solution preparation

2 9954

what is the film thickness in ftir

8 9546

what is the principle of assay of sodium nitrite?

2 8147

why required specificity in valdation

3 5877

why we are analyzing purity on HPLC why not in gc

Aurobindo, Reddy Labs,

3 11420

whate is difference between calibration and validation

Alkem Labs, Cipla, Ranbaxy, Torrent Pharma, Zydus Cadila,

11 43295


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Un-Answered Questions { Analytical Chemistry }

Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

1192


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

1192


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

1251


what is procedure of actual procedure for registration of drug?

888


In rs method development when we are going area normalization method to dilute standard method?

154






Why irmoisture balance is used for corrugated box moisture testing

1326


what is the purge flow & how to calculate

1448


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

1567


How can we detect a compound in hplc which does not have any chromofore?

93


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?

7181


What are the primary considerations in extractables and Leachables ?

1251


WHAT IS THE USE OF STARTER ?????????

1339


How do we fix the sample concentaryion in hplc method development?

110


we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

720


Why are use silicon oil mr?

105