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 5877

how v can identify functional groups by wet techniques?

2 2348

What is the difference in OVI and Residual solvents?

Discovery Intermediates,

3 10339




what is the method of UV cabinet CALIBRTION

2 10587

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

Sharp,

1184

why IR graph or spectra comes down ? Any reason

3 12461

what is partion and column chromatography

Emcure,

1135

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

Neuland, Emmennar,

3 11004




How to establish pKa for a new API molecule ?

Neuland, Sun Pharma,

2 8256

why we are adjusting the ph in buffer solution preparation

2 9284

what is the film thickness in ftir

8 8626

what is the principle of assay of sodium nitrite?

2 7754

why required specificity in valdation

3 5416

why we are analyzing purity on HPLC why not in gc

Reddy Labs, Aurobindo,

3 10784

whate is difference between calibration and validation

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

11 41220


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Un-Answered Questions { Analytical Chemistry }

What is importance of pH in the Heavy metal test and How it effect on the test results?

1064


Which is the highly polar and highly non polar column in HPLC?

926


What is third generation HPLC Columns?

822


Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

1358


What is the difference between spectro meter and spectro photo meter?

8786






pharma industries oriented

942


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

883


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

7557


What is intact assay method development.....?

1241


please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

432


some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?

1268


Why to use propyl paraben in HPLC gradient calibration

1194


How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

2646


what is turbidimetric titration?Give 2 examples.

1224


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

1184