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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 12073

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

5 12907

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

Aurobindo,

1 40168

What is Signal to noise ratio?

3 11074

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

GVK, Millennium,

2831

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 11895

Why forced degradation studies are performed in hplc method validation?

Apex,

6 21709

why base line not starts from zero in gc?

Aurobindo, FDC, Reddy Labs,

1 8637

how to regulate noise in HPLC?

Alkem Labs, Vimta Labs,

2 5552

What is split

Vimta Labs,

4 10319

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

Vimta Labs,

3 11093

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,

1964

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 6530

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

Graviti Pharmaceuticals, Orbit Pharma, Ranbaxy, Vimta Labs,

1 7304

what is the peak purity concept?

Graviti Pharmaceuticals, Vimta Labs,

5 23461


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Un-Answered Questions { Analytical Chemistry }

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

1343


what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

1817


Why only 1.2 million lux hours require in photostability study?

8


why holium oxide prepared in 10% HCLO4 SOLUTION

684


how to set sample and standard concentration in RS method?

14






What should be the level/ Percentage of Arsenic in Arsenic free zinc.

1526




1556


what is mean by ambient temperature?

15


what is mean by dissolution biowaiver study?

18


cefoperozone and sulbactam inj. hplc test method

1787


why digestion require in icpms?

12


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

397


what is mean by dissolution hydrodynamics?

19


What is the diference between residual solvents and organic volatile matter

1210


Why perchloric acid used for potentiometric titration

1868