Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is a differance between assay by HPLC and assay by titration?

5 20817

what is PH of 0.1N Hcl, 0.01N Hcl & Mehanol.

3 40926

what is batch no. of prednisole tablet.

Dr Reddys,

8 9834




HOW RRF IS CALCULATED IN HPLC

2 8999

why should we do limit of stray light in UV calibration and why should use potassium chloride

2 24423

why ph is between 0 to 14

Reliance, Zydus Cadila, Apotex,

6 17338

what is the definition of limit of stray light in UV calibration

Zydus Cadila, FDC,

1 21457

what is the dipolement and how it is related to IR

Aurobindo, AJ Square Inc,

1 5898




why we are using in ph calibrations ph4,7,9.2 buffers only?

Reddy Labs,

5 14384

why hexane is used for FID calibration in GC

Glochem,

1 2764

what is %labelled amount in content uniformity of dosage unit and its calculation?

Zydus Cadila,

3588

how to prepare 5normality of hcl

2 39841

in pentoperazole capsules usp why assay value is substract from dissolution

Ranbaxy,

1 2013

diference b/w packed &capilary columns

2 5574

how to prepare 5 normality of h2so4 solution

Symbiotec,

3 50976


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Un-Answered Questions { Analytical Chemistry }

in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

908


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

571


Why we check moisture,ash & AIA in product

472


how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

1133




1049






mahagenco syllabus for the post of chemist

4904


what type of questions asked on analytical balance and also give answers................all pharma companies?

6098


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

1095


WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

1163


Qc interview questions

346


Colorimtry

222


Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

1010


calibrtion procedue of LC-MS

1269


what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

679


Basic principle of ESI?

836