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 10564

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

5 10074

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


1 36242

What is Signal to noise ratio?

3 9167

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

GVK, Millennium,


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 8875

Why forced degradation studies are performed in hplc method validation?


6 18031

why base line not starts from zero in gc?

Aurobindo, Reddy Labs, FDC,

1 7523

how to regulate noise in HPLC?

Alkem Labs, Vimta Labs,

2 4206

What is split

Vimta Labs,

4 8472

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

Vimta Labs,

3 9492

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,


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

Reddy Labs, Vimta Labs, Graviti Pharmaceuticals,

1 4931

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

Ranbaxy, Vimta Labs, Graviti Pharmaceuticals, Orbit Pharma,

1 6089

what is the peak purity concept?

Vimta Labs, Graviti Pharmaceuticals,

5 17126

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Un-Answered Questions { Analytical Chemistry }

What is third generation HPLC Columns?


what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR


how to calculate corelation coefficient in G.C Calibration? what is the calculation part?


from where i get mortar pastle for glass bottle crush? it's required for testing of it?


Why a1% value is used for some product ? What is the criteria for selection a1% value ?


how can I make the copper get white bye any salt or acit?


How to calculate coreletion coefficient


acceptance criteria for lod & loq by standard deviation of response and slope??



how to get accurate result for Residue on evaporation in purified water


How can I develope method of dissolution by HPLC OR UV


Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?


how will you do the prep for unstable componds?


How to choose concentration of LOQ solutions for RS analysis? Example.


What is viod volume and peak purity in HPLC?