Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

when we use pda detector in hplc instead of uv detector


6 15892

why we use holmiumperchlorate in calibrating uv

DRL, Aurobindo, MSN Pharma,

4 12293

why chiral compounds will rotate the plane polarized light in SoR.


4 8853

Why sulpuric acid only used to ROI but not used nitric acid and some other acids?

Cadila, Ranbaxy, Laurus,

6 15841

how we do assay of urea, ammonium sulpate, ammonium nitro pospate etc


1 1006

what is difference of uv and pda

MSN Pharma, Akums, Shilpa Medicare, MSN,

13 51052

how can you do the analysis of compound given to u by hplc

1 4468

What is calibration procedure of gredient HPLC pump

4 18960

How to determine water content of thioanisole? which interfere by KF titration?

1 5237

what is dissolution


6 16306

What is colimn selection Criteria in HPLC analysis?

4 10454

How to select buffer for HPLC mobile phase

Lupin, Cipla, Cadila,

4 16410

What is primary & Secondary Standard ? Give Example

Lupin, Cipla,

15 136913

Which buffer is used for LC/MS mobile phase & at What Conc.

3 7545

How we fix the validity period of a Normal solution and re-standardization due date

3 5229

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Un-Answered Questions { Analytical Chemistry }

Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...


can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?


Which is the highly polar and highly non polar column in HPLC?


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


what is the difference between qualitative analysis and quantitative analysis and explain them?


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.




What is the pilot-plant in pharma sector.


What is the purpose of octyl silane columns?


We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?


what is procedure of actual procedure for registration of drug?


Tell me something about Vitamin A test method by HPLC


how will you do the prep for unstable componds?


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?


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