Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is the defination of calibration & verification?

Divis Laboratories,

9 21212

what is specificity?

Amneal Pharmaceuticals, Aurobindo,

4 8894

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appartus?

Reddy Labs,

7 20729

who is the father modern liqiud chromatogrphy?

Cipla, Amneal Pharmaceuticals, Car Chem,

3 9428

what is the meaning of ventillation in HPLC?

Amneal Pharmaceuticals,

3 9843

which solvent is highest poler acetonitrile dimethyl formamide methanole tetrahydrofurane buffer solution

8 9250

what is the difference betwen the analytical column & peparative column?

4 10446

why we conclude the area% for the chromatographic purity?

Lupin, Amneal Pharmaceuticals,

1 4771

what is the general mechanism of high performance liqiud chromatography?

Amneal Pharmaceuticals, Ajanta Pharma,

7 12665

why 2Theta value is consider in the XRPD spectra and how to consider the 2 Theta value

2 5731

why we wre doing linearity siudiec in hplc method validation


3 17792

what does optical rotation and specific rotataion means,difference between them

Neuland, CPL,

8 25625

what is regration method in method validation , how we can calculate it.

Sun Pharma, Cipla,

3 8016

viod volume and dead time

Oxygen Healthcare,

7 13750

i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer


How can I develope method of dissolution by HPLC OR UV


In HPLC (Waters) software Empower1,2 &3 what is the updation for each version


give clarity of linearity and range in method validation


Tell me something about Vitamin A test method by HPLC


could negative ions be produced by bombardment process in mass spectrometry?


how you determine moist.of NaOH sol or NaOH flacks


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


My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards


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


What is viod volume and peak purity in HPLC?


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?


How we can determine water content in piperazine


explain 5 components of gas chromatography ?


mahagenco syllabus for the post of chemist