Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how can delete the impurity in 1-(2:6 dichloro phenyl)-2-indolenone.and desolving the impurity in which solvent but does not desolve product in solvent.

1 2452

What is the pilot-plant in pharma sector.

Dr Reddys,

1 2722

What is blank titration of potentiometrically.

2 9781

process of Diclofenac sodium,IP.

1677

why we are using benzene, anyline in acetic anhdride assay titration method?

1581

which solution used for detecting factor of k.f.titroter except water

3 8721

in dissolution why pool sample needed? in which type of drug pool sample need?

Torrent Pharma,

2596

void volume is depending on column or not? if yes how will you depend?

Granules,

1 6724

what is difference between polarity and dipolemoment

Neuland,

3 8863

in determination of(acetone) moister content we are using methanol replaced by pyredine.what hapend in that reaction.

Glenmark, Neuland,

2 8280

what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2208

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

APM, Graviti Pharmaceuticals, Ranbaxy,

1 10429

How do u differentiate primary

1 2493

WHEN AN UN KNOWN SAMPLE IS GIVEN TO U,HOW WILL U START THE ANALYSIS(ie FIRST WHICH TEST TO BE DONE,NEXT,THEN NEXT),HOW WILL U DECIDE WHICH TYPE OF ANALYSIS TO BE DONE FOR IT?

Aurobindo,

2 9977

WILL YOU DRY DST BEFORE FACTOR DETERMINATION BY USING KARL FISHER TITRATOR

Aurobindo, Meghmani Organics,

4 10608


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Un-Answered Questions { Analytical Chemistry }

How to calibration of the uv spectroscopy and its test?

673


mode of absorption in alimentary canal?

1921


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

1551


Many times I don't got a caffeine peak in calibration of hplc using guard column ❓

1170


What is the Formula for coreletion coefficient in plhplc calibration

1252






What is aggregate and fragments in SEC?

1589


Tell me about analytical method validation in QC

5550


how you start RS method development when for new product?

292


effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?

330


what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

346


Related substance method equivalency on control sample or spiked sample?

305


How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

1797


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

2105


What is related substance by HPLC impurity limits as per USP?

559


on the basis of bcs class how to proceed the solubility?

285