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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

In Analytical method development related substance method when did follow w/w method when did follow area normalisation method

Dr Reddys, Sun Pharma,

2 14039

In Analytical method development related substance method when did follow w/w method when did follow area normalisation method

5 16103

why a ph meter require KCL solution for their storing condition?

Aurobindo,

1 42586

What is Signal to noise ratio?

3 13652

what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?

GVK, Millennium,

1 3929

I have 1 gram of Diphenylamine and want to make a 10,000 or 1000 ppm solution in methanol. How do I make this?

Midas Technologies,

9 16219

Why forced degradation studies are performed in hplc method validation?

Apex,

6 25583

why base line not starts from zero in gc?

Aurobindo, FDC, Reddy Labs,

1 10223

how to regulate noise in HPLC?

Alkem Labs, Vimta Labs,

2 7605

What is split

Vimta Labs,

4 13110

What is the purpose & importance of using the polystyrene film in ir calibration?

Vimta Labs,

3 13779

Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

Reddy Labs, Vimta Labs,

2788

why 1.2%kcl solution is using in limit os straylight?and why this test used for uv calibration?

Graviti Pharmaceuticals, Reddy Labs, Vimta Labs,

1 8201

why 0.02% solution toluene &noHexane using in uv calibration?

Graviti Pharmaceuticals, Orbit Pharma, Ranbaxy, Vimta Labs,

1 8841

what is the peak purity concept?

Graviti Pharmaceuticals, Vimta Labs,

5 28663


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

If combination product how require to identify which imp is of which api?

793


please explain about aluminium hydroxide assay

1096


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

2134


process of Diclofenac sodium,IP.

2162


in each media we require to use SLS? how to proceed?

739


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

1926


in stress study if your api not soluble in hcl naoh h2o2 then what require to do?

806


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?

2675


how to calculate elemental impurities?

999


Explain the relations between number of carbon atoms in alkanes and retention time ?

2091


In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

3131


which are the diffrent batches in the pharmaceuticals?

782


Which parameter require to do for analytical method equivalency?

742


What is Band broading effect explain

1836


In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

3085